Model Engine Maker
Engines => Your Own Design => Topic started by: stevehuckss396 on June 21, 2013, 01:05:43 AM
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I got the bug to make a few parts for the Demon blower. I have a lot of prototype parts but have never built one so I decided to make the intake manifold and go up from there. I used the manual mill to rough out the basic shape of the intake and then the CNC mill to start shaping things. It took 3 tools and about an hour and a half to get to this point.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0759s.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0759s.jpg.html)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0760s-1.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0760s-1.jpg.html)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0761s.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0761s.jpg.html)
I also made a pattern and poured a few cases for the blower.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0763s.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0763s.jpg.html)
I will most likely bounce back and fourth between this and the mini bikes so both builds will take twice as long now.
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That is just plane Sexy Steve
Maybe I will pick up a few pointers :praise2:
Pete
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Awesome Steve! :praise2: :praise2:
Don
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I like it Bubba!
Dave
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Amazing stuff Steve...you may have to change the name to Screamin' Demon though with this blower installed :)
Bill
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Keep in mind that Steve's "twice as long" is everyone else's half as long. I'm watching this amazing work.
Mosey :cartwheel: :cartwheel:
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Keep in mind that Steve's "twice as long" is everyone else's half as long.
Good one!!
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Don't forget, I'm always on ya.
Mosey
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Got the top and bottom complete. I just need to drill the holes to mount it and port the blower to the cylinders.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0765s-1.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0765s-1.jpg.html)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0767s.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0767s.jpg.html)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0770s.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0770s.jpg.html)
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Man that looks awesome Steve. That will be a nice engine Love the detail on the blower I like.......... :praise2: :praise2:
Don
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OK Bubba....Awesome work as usual.....but help me out here
B D S .......?
Dave
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OK Bubba....Awesome work as usual.....but help me out here
B D S .......?
Dave
Blower Drive Service
http://www.blowerdriveservice.com/
(http://i770.photobucket.com/albums/xx349/stevehuckss396/Misc/DSCN0043s.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/Misc/DSCN0043s.jpg.html)
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Cool!
I was wondering if it began with Bubba...... 8)
Dave
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Bubba's Drive Service! I like it!
The intake is complete. The ports are drilled and the coolant passages are in. For the first time a blower is bolted to one of my demon blocks.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0772s-1.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0772s-1.jpg.html)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0773s.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0773s.jpg.html)
I'm liking it so far.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0777s.jpg) (http://s770.photobucket.com/user/stevehuckss396/media/V8Demon/DSCN0777s.jpg.html)
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I have my blanks made up for the rotors. The length is dead on and the diameter is .125 inch larger than needed. The shaft is a pressed fit but I used a grooving tool and made some .010 deep grooves and filled them with loc-tite before i rammed the shaft thru.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0781s.jpg)
Here's my setup. The fixture is steel with brass bushings. I spent better than an hour shimming and tapping and indicating to make sure i am perfectly aligned. It's ready to go. If work gets rained out tomorrow I might take a run at one rotor. The RT is for rotating and holding position. The fixture does all the work. With a .188 shaft I didn't want to rely on the RT to support the work. I was worried about the center shaft flexing. I have only allowed .005 clearance in the case so I need all the advantage I can get.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0779s.jpg)
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I'm hoping you plan to video the rotor being cut and at least post a portion of it.
Ray
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IN REDNECK, Bubba damn it man. Between that shot of the real thing and this thing, is got my stall speed converter bout ready lock. :LittleDevil: :LittleDevil: You wanna be my Christmas angel? I have almost museum quality facilities to store either. Seriously, great stuff.
E
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Thanks Whiskey! It do look good.
I will try to remember to video the highlights.
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Steve-
How are you planning to do the Nitrous on the Demon? I see the plate and solenoids on the real one. ;)
-Bob
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Steve-
How are you planning to do the Nitrous on the Demon? I see the plate and solenoids on the real one. ;)
-Bob
I wasn't until now!
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"I wasn't until now!"
Yikes!
You are the man. Blown and sprayed Demon.
I hear the 1/5 scale forging press for the piston blanks, crank and rods now!
-Bob
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Oh man!
Gotta watch this!
Dave
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I just simulated the cut and the current program should be about 3 hours so I might try one after work tomorrow.
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What are you going to machine?
Haven't seen the inside of that housing yet......?
Dave
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Still watching eagerly Steve, this is really some amazing work :praise2: :praise2:
Bill
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Still following along Steve. Don't know what to say. :ThumbsUp: :ThumbsUp: So I'll keep my mouth shut.
Vince
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I hear the Beach Boys playing in the background..... California Dreamin... Cool!
Pack a Camels rolled in your sleeve...
Somebody say something about building a coupe to hold it?
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What are you going to machine?
Haven't seen the inside of that housing yet......?
Dave
I'm going to cut one of the rotors in about 10 minutes. Will have an update around 8:30EST
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All went well with the first piece. In this extremely poor quality video you can see the blank has been rough cut and the profile of the lobe is getting cut into the blank. The profile gets cut and then the cutter steps over 3 thousands and cuts again. The cutter walks all the way down the length of the piece. The part is rotated 120 degrees and the same program is used 2 more times.
https://www.youtube.com/watch?v=wF3fiEoAVKA
After 2 runs
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0784s.jpg)
After all 3 runs
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0787s-1.jpg)
Then the blank gets rotated 60 degrees and this program is run 3 times every 120 degrees. This one works the same way and cleans out the valleys.
https://www.youtube.com/watch?v=jhOgIGKxnC0
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0788s.jpg)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0791s.jpg)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0793s.jpg)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0795s-1.jpg)
If all goes well I hope to clean up, setup the second blank, and get it indicated in and ready to cut for friday.
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Oh that is oh so awesome!....I can hear those blower gears whining now!.... :whoohoo:
Dave
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Holy Cow Batman, That's Blown :praise2: :praise2:
Pete
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Just a quick tip for you.
Make sure you have no backlash in the blower gears that mate the two rotating parts together, the clearances between the the two will be very small and any backlash will hammer them to pieces.
I cut some gear teeth on the blanks for a fellow model engineer who is building a blower Bentley engine, the accuracy had to be spot on.
(http://i456.photobucket.com/albums/qq286/pgp001/Model%20Engineering/Various%20Tooling/Mikron%20112%20Gear%20Hobber/PICT0126.jpg) (http://s456.photobucket.com/user/pgp001/media/Model%20Engineering/Various%20Tooling/Mikron%20112%20Gear%20Hobber/PICT0126.jpg.html)
(http://i456.photobucket.com/albums/qq286/pgp001/Model%20Engineering/Various%20Tooling/Mikron%20112%20Gear%20Hobber/DSC03777.jpg) (http://s456.photobucket.com/user/pgp001/media/Model%20Engineering/Various%20Tooling/Mikron%20112%20Gear%20Hobber/DSC03777.jpg.html)
(http://i456.photobucket.com/albums/qq286/pgp001/Model%20Engineering/Various%20Tooling/Mikron%20112%20Gear%20Hobber/HarrogateMEExhibition09-05-09034-01_zpsd180b560.jpg) (http://s456.photobucket.com/user/pgp001/media/Model%20Engineering/Various%20Tooling/Mikron%20112%20Gear%20Hobber/HarrogateMEExhibition09-05-09034-01_zpsd180b560.jpg.html)
(http://i456.photobucket.com/albums/qq286/pgp001/Model%20Engineering/Various%20Tooling/Mikron%20112%20Gear%20Hobber/02214-06-12_zps60ea2f85.jpg) (http://s456.photobucket.com/user/pgp001/media/Model%20Engineering/Various%20Tooling/Mikron%20112%20Gear%20Hobber/02214-06-12_zps60ea2f85.jpg.html)
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Just a quick tip for you.
Make sure you have no backlash in the blower gears
Yeah buddy! Got it covered. I have set some very high standards for the blower parts. When I indicated in the blanks I wanted less than .001 difference. I got both to better than that. The gears should have no trouble keeping the rotors apart. I'm setup for round 2. The second blank is shimmed and indicated in. I would cut it right now but we are getting pounded with rain and with my luck the power would go out 10 minutes before it's done.
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Crazy but excellent!
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Well! It's official, I now have a pair.
They still need to be deburred and geared together so i can see how they run together. The fit seems very promising. I'm sure there will need to me some fine fitting with some fine grit sand paper.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0799s-1.jpg)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0798s.jpg)
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Very nice :ThumbsUp:
Phil
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Damn Bubba!.....I hope your not going to over drive that beast!....seems like a whole lot a blower!
Beautiful!
Dave
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Damn Bubba!.....I hope your not going to over drive that beast!
Dave
25% overdrive.
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I love It :praise2: :praise2: :praise2: :praise2: :praise2:
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Damn Bubba!.....I hope your not going to over drive that beast!
Dave
25% overdrive.
Just as long as pistons don't start swapping rods....just sayin!!
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We've seen some wanting to run and we've seen "runnahs", but we ain't ever seen none busting a blower and sticking some rods through the crankcase. Give her Hell, Bubba. 25 overdrive, on gas, with a good stiff alky back. On a long lonesome hiway east of Omaha 8) :cheers:
E
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After 2 days of filing, dying, testing , and sanding, fitting, massageing, and tinkering, well you get the point. The rotors are fitted to the case. The rotors free spin and nothing touches nothing.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0806s.jpg)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0811s.jpg)
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On a long lonesome hiway east of Omaha 8) :cheers:
Yeah! we can listen to the engine moaning out it's one note song.
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I have the new gear cover done. Just need to sand blast it and thread the holes.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0813s.jpg)
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Hi Steve,
Being following your build, amazing, is about all I can say. Not sure if its just me but all your photos have "Photobucket" "Look who's" popular" instead of those great photos, the moves seem OK. Have check on both a iPad & windoz machines, same issue.
Cheers Kerrin
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I have the same problem as Steve5. I don't use :censored:bucket anymore since they changed it and certainly not going to get 'plus' just so they can stream more ads google is bad enuff with that as is. :killcomputer: The videos are good though
Pete
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Hi Steve,
Being following your build, amazing, is about all I can say. Not sure if its just me but all your photos have "Photobucket" "Look who's" popular" instead of those great photos, the moves seem OK. Have check on both a iPad & windoz machines, same issue.
Cheers Kerrin
I have the same Steve and that's after modifying things to 10 messages as you suggested. Maybe my PB account is the problem?
Best Regards
Bob
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I have the same Steve and that's after modifying things to 10 messages as you suggested. Maybe my PB account is the problem?
Best Regards
Bob
The bandwith is zeroed out on my sign up anniversary which is the 6th. Then the pictures reappear and the count starts climbing. I have no doubt that you changing to 10 has helped and will continue to help myself and everybody else who's threads you look at. I am going to keep an eye on it thru out the month and see what happens.
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Got the drive snout done. I recycled the prototype by shortening it up and re-boring the bearing pocket.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0815s-1.jpg)
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A box of hand rolled cigars and a blown V-8, a real man's man. Are you " The Most Interesting Man In The World" :lolb: :lolb: Looks great pal.
Eric
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Well i'm done for the day.
The adjusting bracket I had made long ago. All I had to do is drill and tap the threads and then slit it so it would snug down on the snout. Then I threaded it so the idler wheel pin would thread into it. The idler pin I cheated a little and used a piece of 9/32 hex bar I had on hand. The idler wheel itself is to the drawing. Alignment looks very good with the crank pulley. I need to get a belt so the pictures will be much cooler.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0817s.jpg)
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Very Nice Steve :NotWorthy:
Added bonus..............today I can see your pictures ;D
Best Regards
Bob
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Nice work Steve!
I have been patiently waiting for the pictures to reappear; and it has been worth the wait.
Dave
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:whoohoo: the pictures are back!! :cheers: Steve. Still loving the work. I was going to show my Dad your build but no pictures :'( that day. He was telling me how he use to fit the rotary screw blowers in days of old.... slowly with feeler gauges!
Cheers Kerrin
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The blower unit itself is 99% done. I still have to make gaskets. I think I'm going to try to make the air scoop next. What I think and what I do is sometimes 2 different things but for now that's the plan. I am working on getting the belt length nailed down. Soon the belt will be in the pictures.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0820s.jpg)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0821s-1.jpg)
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:o :ThumbsUp: :NotWorthy:
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Looking good Steve. :ThumbsUp:
Don
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All i can say is masterful work Steve...amazing!!!
Bill
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Hi Steve
How much clearance do the rotors in the blower have? I don't know much about these things but I seem to remember that the top fuel guys run some kind of plastic wiper for pretty much 0 clearance.
I wonder how much clearance is allowable to still build some pressure? If it comes from a blower is it still called boost or is that only a turbo thing?
Anyway it sure looks nice!
Dave
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Hi Steve
How much clearance do the rotors in the blower have? I don't know much about these things but I seem to remember that the top fuel guys run some kind of plastic wiper for pretty much 0 clearance.
I wonder how much clearance is allowable to still build some pressure? If it comes from a blower is it still called boost or is that only a turbo thing?
Anyway it sure looks nice!
Dave
I was shooting for .005 and hoping for .010. The clearance in a real blower i couldn't tell you. Mine had no teflon and made 10.5 lbs boost. The teflon is for the racers who want big boost. Top fuel engines make 50lbs per rules. I'm sure they would go more if rules were changed.
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Thanks
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I am about 70% done with the scoop. To clean out the innerds I plunged a 5/8 ball nose mill into the nose. The chips swirling around scuffed up the inside pretty good. After machining the bottom and fitting it to the carbs, if the finish is decent, i'm going to sand blast it inside and polish the outside to a super shine. I hope to finish it up today and see what I end up with.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0823s-1.jpg)
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We got'er!
Still needs some buffing and polishing. I also want to take the dremel tool to the inside and clean that up somewhat. Over all I'm happy with it.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0825s.jpg)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0828s.jpg)
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Nice Job Steve :ThumbsUp:
Dave
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Now, what's sad is we gotta have one of them sexy black covers to go over the scoop. Put it on, take a couple of pics and then let's let her rip. :ThumbsUp:
Eric
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Now, what's sad is we gotta have one of them sexy black covers to go over the scoop. Put it on, take a couple of pics and then let's let her rip. :ThumbsUp:
Eric
That would be cool. Do you know anybody that sews in miniature? :lolb:
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I think so
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If your crazy enough to try it i have attached a drawing. If I were you I would make 2. You know you are going to build one of these some day!! :cheers:
http://www.blowerdriveservice.com/store/bds-vinyl-scoop-cover-black-use-wpart-9000-or-9000c-p-875.html
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Pretty darn close!
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/Progress.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0828s.jpg~original)
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Looks great from here Bubba!....Love it!
Dave
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Fits in the minibike frame? Eooowee!
Mosey
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Fits in the minibike frame?
I'm thinking no.
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Not sure the mini bike could handle all that power :) !! The whole thing looks tremendous Steve, can't wait to hear it roar!!!
Bill
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Yo Bubba, can you give me the measurements for the inlet of the blower. I got the sewing crew on standby.
Eric
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Yo Bubba, can you give me the measurements for the inlet of the blower. I got the sewing crew on standby.
Eric
I attached a drawing for the scoop in reply #67. It's called Page18.pdf
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I have started on the linkage for the carbs. 2 small brackets, a shaft, and a couple of retainers to maintain position of the rod. This rod will rotate to open and close the carbs.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0831s.jpg~original)
When you cad this stuff up it's real easy to loose track of just how small the parts can get. On the computer you can just zoom in a little more. Cant do that in the garage.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0836s.jpg~original)
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That caliper puts the size into perspective., I always thought the project was much bigger. Adds to the achievement!
Hugh.
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Got my pivot arms done. I think i'm going to spend the rest of the day making spark plug boots. Makes for a nice easy day.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0840s-1.jpg~original)
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Hey Steve,
Those little links turned out real nice :ThumbsUp:.
Dave
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Hey Steve,
Those little links turned out real nice :ThumbsUp:.
Dave
The linkage is turning out to be a real challenge. I did'nt realize how small everything was going to be. Thanks Dave!
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Blower belts came in the mail today. The fit is perfect. With any luck I should be back at it early next week.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0844s.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0843s.jpg~original)
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Steve,
When you get it running, and after you play the music for us, take it to the drags and play it for the big boys. They'll go nuts.
Mosey >:D >:D :mischief: :stir:
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They have all seen it. My brother in law Freddy organizes an event called the Night of fire. He gets top fuel and other drag boats to meet somewhere and fire up there engines for the fans. It is usually in a parking lot or somewhere dry so people can get a good view. It was canceled for 2013 because of the heavy rain. It gets everybody revved up to go to the races. Anyhoo I send pictures to him and he spreads them around.
I have been trying to get drawings for the top fuel engines for years but it has not happened yet.
Here is his event. Fred McBain is my wifes older brother.
http://www.augustasouthernnationals.org/drag-boat-info/night-of-fire/
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That is one slick looking engine, I just love the blower. I am curious as to how it will sound.
Don
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That is one slick looking engine, I just love the blower. I am curious as to how it will sound.
Don
Don't get your hopes up too high. I have heard a few blown models run and never heard one whine. I might try running on nitro to see if i can get flames out of the pipes. I wont do it more than once.
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Steve, without the calipers there to show scale, it looks like you just lifted the engine out of a dragster...lovely work as always.
Bill
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Steve, without the calipers there to show scale, it looks like you just lifted the engine out of a dragster...lovely work as always.
Bill
Thanks Bill! Long way to go but it has a cool look about it.
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Damn Bubba! ......wait for it.....
Steamer want's big VROOOOOM!
8)
Dave
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Damn Bubba! ......wait for it.....
Steamer want's big VROOOOOM!
8)
Dave
This has a familiar ring to it. Have we done this before?
I still have all the innerds to make so it will be a while but you will get your big VROOOOM
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Damn Bubba! ......wait for it.....
Steamer want's big VROOOOOM!
8)
Dave
This has a familiar ring to it. Have we done this before?
I still have all the innerds to make so it will be a while but you will get your big VROOOOM
Well of course it does!...... :lolb:
Dave
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Mosey want vroom, too!
vroom, vroom!
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Mosey want vroom, too!
vroom, vroom!
:lolb: :lolb: :lolb:
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Finally a little progress!
I have been tied up with maintaining other engines. The Peewee V4 now has a new distributor cap, rotor, and hall sensor. She's running real nice now. The V8 had a water pump burn up. My own fault. The first design had the coolant return hose right under the fill cap so when I run it the coolant sprays out the vent hole in the cap. The coolant got low and the pump got no lube so it is now a little loose.
One thing I didn't like about the old one is the fact that the body doubles as a bearing race. The body has to be made from bronze or brass. I am going to see how a pump with sealed bearings works. With ball bearings I should be able to get away with an aluminum pump. I also am making this one like a real pump in the sense that it draws water from the inlet and feeds coolant to both sides of the pump like a real one. I don't need it to do that but I may in the future. I figured I would make enough parts for 3 pumps. I need one for the V8, one for the blown V8 and one for spare parts.
The top piece is the back side of the pump. All the passages are milled into the back of the body. The lower piece is the front of the back plate. The back plate allows the pump to span the timing cover and carries the rear bearings.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0902s.jpg~original)
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Great thinking. You've defined these pumps for everyone to follow.
Mosey :NotWorthy: :praise2:
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Steve, I have just caught up on this thread. Fantastic work as always!
One question, what software did you use to calculate the paths for cutting the lobes? It seems to me that as the end of the mill is presented to the material at different angles as it moves over the lobe that some compensation must have been involved. Is it a ball mill?
Thanks, lee
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Steve, I have just caught up on this thread. Fantastic work as always!
One question, what software did you use to calculate the paths for cutting the lobes? It seems to me that as the end of the mill is presented to the material at different angles as it moves over the lobe that some compensation must have been involved. Is it a ball mill?
Thanks, lee
Yes it is a ball end mill. 1/8 inch I think. I used CamBam to generate the tool paths. I did a vertical 3D profile and let the tool walk down the part. Stepover was about .005 inch so the finish was real nice. I still had to do some hand polishing as my CNC machine is good to a few thou not a few tenths like the expensive machines.
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Little more on the pump today. The rear plate and body are complete. I rounded off some corners to make it look different but I think I like the old style better.
Now I need to make me some guts.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0905s.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0906s-2.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0908s-2.jpg~original)
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That looks great Steve, I really would lie to see it up close to see the size of it all.
Don
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Oh man, even polished it up. Way togo . :whoohoo: :whoohoo: :whoohoo:
Yeah I'd like to see it too. It's hard to get a feel for how big things are on the forum.
After I get some thing done I'd like to get the plans for The Demon without blower. I'd never be able to manually machine the blower. I may even get the plans just to have them to drool over. :P :P
Ron
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That looks great Steve, I really would lie to see it up close to see the size of it all.
Don
Yeah I'd like to see it too. It's hard to get a feel for how big things are on the forum.
Ron
Does this help?
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0913s.jpg~original)
How about this one?
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0915s-2.jpg~original)
Or my personal favorite.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0910s-2.jpg~original)
Hope this helps.
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Beautiful work Steve...I vote for your favorite too... :lolb:
Bill
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Beautiful work Steve...I vote for your favorite too... :lolb:
Bill
I have a feeling that one will get the most votes.
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That is awesome Steve, I like............ :praise2:
Don
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Now that Gives a good perspective. It's a good sized engine. Thanks Steve.
Ron
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I have finished the 2 shafts other than the fact that the drive shaft needs to be trimmed to length. On the old pump the shafts rode in a reamed hole so the case needed to be brass or bronze. Now the shafts ride in 1/8 X 1/4 inch bearings. The o ring seal has been moved to a small pocket in the rear of the front case. I still need to make a gasket but I have my trusty template so that should go fast and then an easy finish and it should be mounted tomorrow if life will allow. I'm in a bit of a hurry because I have a metal club meeting Wednesday and I'm trying to turn it into an engine run so I would like to be ready.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0917s.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0920s-2.jpg~original)
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Gorgeous, wish I could be there!
Mosey :NotWorthy:
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Don't forget to take your video camera Steve :Director:
Bill
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Give em hell Steve!....Video Please!
Dave
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Well I got it done. Tomorrow I will fill the radiator and give the water pump a test run. If all goes well I will finish building the second one for the blower motor.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0924s.jpg~original)
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Sorry men but there is nothing to report. I was the only one who showed up with engines. Too short a notice i guess.
There is a rumor floating around that the MDMC is going to try to organize an engine run in September at a small park in St Clare Shores around 16 and Harper. Our club will be invited as well as some of the other local metal clubs. We'll see if it works out.
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Now that the other engines are running good I had time to make some new stuff. I made new carb levers and bolted them to the drums on the carb. The ball screwed into the lever but not flush like I expected. That I can fix. The socket did not pop onto the ball as far as I thought it would. That I cannot fix so I will shorten the lever up to make the adjustment. 5 minute fix, I can handle that. I also have the threaded links made to connect the throttle levers to the pivot dohickeys. I plan to make the base bracket wider so the ball wont hit the blower case. I'm only talking a .050 inch change. Not a big deal. The threaded linkage rods wont screw into the socket real far. That I expected so I cut about half of the length off that piece and it went exactly as I was hoping. The carbs are linked to the main shaft and working together so its progress.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0928s-1.jpg~original)
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Hi Steve
Your work is an inspiration :praise2: :praise2:
Pete
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Hi Steve
Your work is an inspiration :praise2: :praise2:
Pete
You'll be doing the same thing soon enough Pete. Just bigger!
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Well!, i have made the base bracket that holds the swivel gizmo. This is the thing that will turn horizontal motion into vertical motion. I have one more bracket to make and a few rods and I will have the linkage done.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0932s.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0929s.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0931s.jpg~original)
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Looking good Steve!
Dave
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Simply Awesome !!! :cheers:
Dave
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Simply Awesome !!! :cheers:
Dave
Yea same here. That will be one georgous engine.
Don
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Certainly a super build Steve .....just one question.......
If the o-ring is dynamic..........will it be suitable for the circumferential speed involved? :Mad: ...or am I missing something :hammerbash: & the o-ring is static .............Derek
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Love the linkages Steve! Sorry your little meeting didn't pan out though.
Bill
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Certainly a super build Steve .....just one question.......
If the o-ring is dynamic..........will it be suitable for the circumferential speed involved? :Mad: ...or am I missing something :hammerbash: & the o-ring is static .............Derek
The o-ring is static and resides in the pump housing. The old pump had a oring seal right behind the fan pulley on the outside of the pump housing.
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Sorry your little meeting didn't pan out.
I'm not. I still ran my stuff so i got to sniff exhaust fumes. Thats all i wanted was an excuse.
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Well that's it for the blower. The linkage is done and working very nice. The plans have 2 changes to them
so the latest update will be out today with those 2 changes on them. The engine won't be running for a
while as I still need a crankshaft and all the fixins. I will start on all that early next week if all goes well. I
have another project that I want to finish and I'll be back.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0934s.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0937s.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0939s.jpg~original)
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0940s.jpg~original)
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Beautiful work as always Steve.
Vince
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Fantastic Steve.
Hugh.
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Well I have the easy part done. The throws are the worst part and I am not looking forward to it.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0944s.jpg~original)
I am going to try the George Britnell method so I started making a fixture to hold the crank for milling operations. Once complete I can pre-mill the throws so there will be alot less to remove on the lathe. The fixture looks big but I made it work for a future project.
(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN0946s.jpg~original)
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I started making a new crankshaft. I have made 2 changes to my process to try to get better results. I was getting some major chatter. The crankshaft has a front shaft a little over an inch long and a tail shaft more than 2 inches long. Those diameters are at there largest .250 inches. To increase rigidity I made some blocks for the ends with the centers drilled in them that those shafts can slide into and take out the flex. I also changed my tooling. The accepted way to grind tools is to grind a small relief in the center of a parting tool to create a forked tongue in the end. I took a .094 wide parting blade and ground a right hand tool on one end and a left hand tool on the other. I machined the mains and both ends to spec between centers. Then the blocks were installed and the throws were cut in the mill and finished in the lathe one at a time. Absolutely no chatter at all and super nice finish on everything. I suppose I had about 10 hours in the shaft when I went out this morning to finish the last throw. I put the shaft in the vise in the wrong orientation and cut about half way thru the last throw before I realized what I did. Everything was working perfectly except my brain. Tomorrow I start my third!!! I think this is karmas punishment for not taking pictures to post.
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Bad luck on the Crank Steve, some days its best to just go fishing I recon :toilet_claw:
Pity we don't get paid by the hour.
When it runs it will sound all the sweeter :cheers:
Pete
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Third time the charm bud.....you'll get it!
Dave
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Thanks men. :facepalm:
I think what I'm going to do is when I get to that part I'm going to do all the milling before I go to the lathe. That might minimize the chances of it happening again.
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I started making a new crankshaft. I have made 2 changes to my process to try to get better results. I was getting some major chatter. The crankshaft has a front shaft a little over an inch long and a tail shaft more than 2 inches long. Those diameters are at there largest .250 inches. To increase rigidity I made some blocks for the ends with the centers drilled in them that those shafts can slide into and take out the flex. I also changed my tooling. The accepted way to grind tools is to grind a small relief in the center of a parting tool to create a forked tongue in the end. I took a .094 wide parting blade and ground a right hand tool on one end and a left hand tool on the other. I machined the mains and both ends to spec between centers. Then the blocks were installed and the throws were cut in the mill and finished in the lathe one at a time. Absolutely no chatter at all and super nice finish on everything. I suppose I had about 10 hours in the shaft when I went out this morning to finish the last throw. I put the shaft in the vise in the wrong orientation and cut about half way thru the last throw before I realized what I did. Everything was working perfectly except my brain. Tomorrow I start my third!!! I think this is karmas punishment for not taking pictures to post.
Only screwed up 2 of em....some people do about 5 to get one right! Ur doing fine..keep going!
Mosey
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Oh I aint no quitter! I'm out in the garage whacking away at #3 right now.
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Good stuff Steve! Best of luck with take 3, but it looks like you'll be fine regardless
Steve
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(http://i770.photobucket.com/albums/xx349/stevehuckss396/V8Demon/DSCN1217s-1.jpg~original)
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I'm gonna beat Dave to it, Damn Bubba, that's sweet :cheers:
Whiskey
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Steve,
No commentary was needed with that picture! Crank looks great.
--Tim
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Steve,
No commentary was needed with that picture! Crank looks great.
--Tim
didn't have the mental capacity to comment. Started on it last Sunday. Worked on it a few hours every night and finished it today. About 20 hours and that is the third so counting the first 2 tries i'm closer to 40.
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Very nice job Steve
Steve
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Its a beautiful crankshaft Steve! :ThumbsUp: Bet you're glad to finally have that one behind you. Its sure one to be proud of though!
Kim
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Hi Steve,
The crank looks great. Once you get a system down you think to yourself, "now that wasn't so darn hard." Not that you want to make another one right away after 3 tries.
gbritnell
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Well done Steve :ThumbsUp:
Jo
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Excellent :ThumbsUp: :ThumbsUp: I can almost smell the exhaust.
How are the internal radiuses on the balance weight webs machined, with a ball nose end mill?
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I can almost hear it now Bubba!.....Can't you!
.....OK....wait for it......
Steamer want's big Vrooom!........ :lolb:
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Hi Steve,
The crank looks great. Once you get a system down you think to yourself, "now that wasn't so darn hard." Not that you want to make another one right away after 3 tries.
gbritnell
Actually I do want to make another one for another project I have in mind. I was thinking about doing it now while i have my head straight. I must be nuts!
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Excellent :ThumbsUp: :ThumbsUp: I can almost smell the exhaust.
How are the internal radiuses on the balance weight webs machined, with a ball nose end mill?
Yes, I used a ball mill.
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I can almost hear it now Bubba!.....Can't you!
.....OK....wait for it......
Steamer want's big Vrooom!........ :lolb:
I'm getting close, but not that close. :lolb: :lolb: :lolb: :ROFL: :ROFL: :Lol: :Lol: :LittleDevil: