Author Topic: PMR 7 Twin Cylinder Steam Engine  (Read 32061 times)

Offline zeeprogrammer

  • Full Member
  • *****
  • Posts: 6811
  • West Chester, PA, USA
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #15 on: April 10, 2018, 10:41:17 PM »
Changed my sign off.
Was "Zee - A Thread Trasher"...but I'm not the only one.  :cussing:
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline Tennessee Whiskey

  • Full Member
  • *****
  • Posts: 3781
  • Springfield, Tennessee. USA
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #16 on: April 10, 2018, 11:04:30 PM »
Well you need to remove those four letter words you don’t have to do anymore  :lolb:. Yeah, that’s kinda what I meant, just forgot your mill moves the head and not the table. I hate shaving and y’all have seen my gray whiskers  :lolb:.  BTW, the machining is looking great. Wasn’t there a song back in the day about “She likes jelly and I like jam”?  :thinking:  Ta,

Cletus

Maybe this one is what I was thinking

<a href="https://www.youtube.com/watch?v=S_Jzl_bx3fI" target="_blank">http://www.youtube.com/watch?v=S_Jzl_bx3fI</a>

Offline zeeprogrammer

  • Full Member
  • *****
  • Posts: 6811
  • West Chester, PA, USA
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #17 on: April 10, 2018, 11:36:26 PM »
Back to Eric...he'd asked about power down feed.

I don't have it. I'd asked PM (where I got the mill) about it and they said 'no'. But I'm thinking they meant they don't offer it.
In another thread, someone (apologies to 'someone') suggested a solution.
It's something I need to look into.
Turning that wheel is a pain now and in a few years could be too much of a hassle to deal with.

I did install X power feed and that's a wonderful thing.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 13860
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #18 on: April 11, 2018, 12:22:40 AM »
Things are really looking great zee. Amazing what not having to go to work can do...so looking forward to that. You are moving along at a good clip too. Will need to check in often I think  ;)

Bill

Offline Dave Otto

  • Full Member
  • *****
  • Posts: 4693
  • Boise, Idaho USA
    • Photo Bucket
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #19 on: April 11, 2018, 12:32:40 AM »
Great to see you back in the shop Zee!

Dave

Offline zeeprogrammer

  • Full Member
  • *****
  • Posts: 6811
  • West Chester, PA, USA
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #20 on: April 11, 2018, 09:04:16 PM »
Thanks guys.

I finished the other cross head mount and decided to do a little lathe work.
Something easy...the 8 spacers.

1st pic: Drilled so the screws could make it through.
2nd pic: Faced off. Just the once.
3rd pic: Measuring to cut.
4th pic: Parted then go to back to step 3 for 7 more.
5th pic: The 8 spacers. I stuck each one in my tailstock chuck and gave the inner diameter a lick with a countersink. Naturally that results in a bit of chatter but it won't be seen.

Did I say easy? When parting spacer #3 I fed too hard and the whole thing broke away at the chuck jaws. Some of the tubing collapsed. My worry was, after cleaning up the end, whether I'd have enough material for the rest of the spacers as well as the two pipe nipples. But all seems well.

I could have cleaned up the outside of the spacers a bit but didn't bother. They'll be hard to see anyway.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline zeeprogrammer

  • Full Member
  • *****
  • Posts: 6811
  • West Chester, PA, USA
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #21 on: April 11, 2018, 09:54:11 PM »
Did the eccentric rods. Still need to be bent but that will happen during assembly.

I did remember to chamfer before threading but didn't do a very good job. It'll work though!

Didn't have to turn the ends down. The diameter of the rod is slightly under major diameter of the thread.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline crueby

  • Full Member
  • *****
  • Posts: 18557
  • Rochester NY
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #22 on: April 11, 2018, 10:25:34 PM »
Coming along nicely!  Isn't this more fun, satisfying, relaxing, etc than that werk,  um, wurk, err, whatever its called, thing?!

Offline zeeprogrammer

  • Full Member
  • *****
  • Posts: 6811
  • West Chester, PA, USA
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #23 on: April 11, 2018, 10:45:11 PM »
Coming along nicely!  Isn't this more fun, satisfying, relaxing, etc than that werk,  um, wurk, err, whatever its called, thing?!

Indeed. Although today I somehow found myself hauling mulch for T.  :cussing:

I did a quick mock-up of mounting the base onto the mill so the cylinder mounts could be drilled.
Looks do-able.
Squaring it should be easy enough. Can shim one end or the other as needed.

Also checked for problems with reaming. No room using the chuck but the 3/8" reamer fits a 5/16 collet quite nicely.

 :whoohoo:

[EDIT] Just noticed it may be difficult to see the L-brackets (two of them) that the various clamps are holding.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline crueby

  • Full Member
  • *****
  • Posts: 18557
  • Rochester NY
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #24 on: April 11, 2018, 11:42:04 PM »
If you have them, would a set of 1-2-3 blocks give more surface area and wider stance for clamping to table and part? Either way, make sure those clamps are on tight, don't want any vibration to wiggle them loose (not that its happened to me... today...)

 :popcorn:

Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 13860
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #25 on: April 12, 2018, 12:00:37 AM »
Nice progress zee!! Making me feel guilty for my lack of same  :paranoia:

Bill

Offline zeeprogrammer

  • Full Member
  • *****
  • Posts: 6811
  • West Chester, PA, USA
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #26 on: April 12, 2018, 12:42:59 AM »
If you have them, would a set of 1-2-3 blocks give more surface area and wider stance for clamping to table and part? Either way, make sure those clamps are on tight, don't want any vibration to wiggle them loose (not that its happened to me... today...)

I do have a set. But I struggle to understand exactly what you mean.
I am worried about wiggling (I do it myself all the time and get in trouble for it). I'll be taking it slow and easy...which is no guarantee.

Nice progress zee!! Making me feel guilty for my lack of same

Won't be long Bill. Couple of months? But then it's summer time...many reasons to take up your time.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 13860
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #27 on: April 12, 2018, 01:09:57 AM »
Fifty days Carl, but who's counting  :cartwheel:

Bill

Offline zeeprogrammer

  • Full Member
  • *****
  • Posts: 6811
  • West Chester, PA, USA
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #28 on: April 12, 2018, 01:36:55 AM »
Fifty days Carl, but who's counting  :cartwheel:

Well I did. I was so bad...I was counting the total number of stop lights I had to go through to work and back. I counted the number of lunches I had to take. The number of times I had to shave. The number of times I had to go through a scary underpass. The number of times I had to wear some shoes I wanted to throw out. I was counting everything.

But no more.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Online Kim

  • Global Moderator
  • Full Member
  • *****
  • Posts: 7860
  • Portland, Oregon, USA
Re: PMR 7 Twin Cylinder Steam Engine
« Reply #29 on: April 12, 2018, 05:31:38 AM »
You're doing great work, Zee!  Glad to see you making progress on your project.  And what fun, eh? :)
Kim

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal