Author Topic: Blower for The Demon V8  (Read 39863 times)

Offline stevehuckss396

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Re: Blower for The Demon V8
« Reply #120 on: August 23, 2013, 02:11:14 AM »
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.
Do not be like the cat who wanted a fish but was afraid to get his paws wet.

Offline stevehuckss396

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Re: Blower for The Demon V8
« Reply #121 on: August 25, 2013, 03:45:54 PM »
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.







Do not be like the cat who wanted a fish but was afraid to get his paws wet.

Offline vcutajar

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Re: Blower for The Demon V8
« Reply #122 on: August 25, 2013, 05:57:21 PM »
Beautiful work as always Steve.

Vince

Offline ths

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Re: Blower for The Demon V8
« Reply #123 on: August 25, 2013, 09:15:38 PM »
Fantastic Steve.

Hugh.

Offline stevehuckss396

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Re: Blower for The Demon V8
« Reply #124 on: September 16, 2013, 12:20:49 AM »
Well I have the easy part done. The throws are the worst part and I am not looking forward to it.




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.

Do not be like the cat who wanted a fish but was afraid to get his paws wet.

Offline stevehuckss396

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Re: Blower for The Demon V8
« Reply #125 on: November 30, 2013, 10:47:58 PM »
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.
Do not be like the cat who wanted a fish but was afraid to get his paws wet.

Offline metalmad

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Re: Blower for The Demon V8
« Reply #126 on: November 30, 2013, 11:00:00 PM »
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
A little bit every day, sometimes the same little bit

Offline steamer

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Re: Blower for The Demon V8
« Reply #127 on: November 30, 2013, 11:42:17 PM »
Third time the charm bud.....you'll get it!

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline stevehuckss396

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Re: Blower for The Demon V8
« Reply #128 on: November 30, 2013, 11:53:28 PM »
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.
Do not be like the cat who wanted a fish but was afraid to get his paws wet.

Offline Mosey

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Re: Blower for The Demon V8
« Reply #129 on: December 01, 2013, 03:48:16 PM »
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

Offline stevehuckss396

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Re: Blower for The Demon V8
« Reply #130 on: December 01, 2013, 05:02:50 PM »
Oh I aint no quitter!  I'm out in the garage whacking away at #3 right now.
Do not be like the cat who wanted a fish but was afraid to get his paws wet.

Offline swilliams

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Re: Blower for The Demon V8
« Reply #131 on: December 02, 2013, 02:06:43 AM »
Good stuff Steve! Best of luck with take 3, but it looks like you'll be fine regardless

Steve

Offline stevehuckss396

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Re: Blower for The Demon V8
« Reply #132 on: December 07, 2013, 08:10:18 PM »
Do not be like the cat who wanted a fish but was afraid to get his paws wet.

Offline Tennessee Whiskey

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Re: Blower for The Demon V8
« Reply #133 on: December 07, 2013, 08:42:24 PM »
I'm gonna beat Dave to it, Damn Bubba, that's sweet :cheers:
Whiskey

Offline tvoght

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Re: Blower for The Demon V8
« Reply #134 on: December 07, 2013, 09:55:06 PM »
Steve,
No commentary was needed with that picture! Crank looks great.

--Tim