The Offcial Machinist Thread: Revised 01/04/2014

Technician1002 · Fri Oct 14, 2011 9:33 pm

The guys up here are willing to train me to use this lathe. Here is a size example..

warhead052 · Fri Oct 14, 2011 9:57 pm

:O NICE! What would you turn on it?

mattyzip77 · Fri Oct 14, 2011 9:58 pm

hmmm, if you machined a piston on that beast you would have to use car tires as o rings!!!!

CooperJS · Fri Oct 14, 2011 11:49 pm

That would be sooo awesome getting to use a lathe like that

:O NICE! What would you turn on it?

probably machine things for industrial use and maybe big crankshafts or just really big pistons

Technician1002 · Sat Oct 15, 2011 12:41 am

They have used it to re-manufacture or make replacement parts for the steam train. The manufacture no longer makes steam trains or parts.

What was more interesting in the shop was this beauty.

Spent the day as Fireman on this while we shuffled rolling stock to make up the train for the Photo tour tomorrow. The train is now ready for the photo run. I'll get more photos tomorrow.

I had the chance to be engineer for about 15 minutes and run the train through a switch and back it up to some of the cars. It was all low speed stuff, but lots of fun anyway. It was my first time running a steam engine.

jackssmirkingrevenge · Sat Oct 15, 2011 4:45 am

They left the ignition key in the cab.

Amazing stuff Tech!

Labtecpower · Sun Oct 16, 2011 11:16 am

I'm working on a new 1" QDV, and I need a piston for it.
In the following weeks I won't be able to machine anything, so maybe I can purchase one from an european member?

drawing:

jackssmirkingrevenge · Sun Oct 16, 2011 11:20 am

I can rustle that up out of acetal very quickly (after I'm one with the knife

) if you want.

Labtecpower · Sun Oct 16, 2011 11:21 am

That would be great!

How much would it set me back?

jackssmirkingrevenge · Sun Oct 16, 2011 11:23 am

I think ten euros including postage is fair, let me know if you disagree

edit: one point that might or might not be important, does it matter if the shoulder in the central hole has a taper from the drill bit, or does it have to be at 90 degrees?

Labtecpower · Sun Oct 16, 2011 12:06 pm

I think ten euros including postage is fair, let me know if you disagree

I completely agree

edit: one point that might or might not be important, does it matter if the shoulder in the central hole has a taper from the drill bit, or does it have to be at 90 degrees?

As long as a M4 / M5 nut doesn't fit trough, i'm happy

jackssmirkingrevenge · Sun Oct 16, 2011 12:29 pm

Labtecpower wrote:I completely agree

ok

also a 1 euro donation to PC guy

As long as a M4 / M5 nut doesn't fit through, i'm happy

No worries, should have time to do it tomorrow, watch this space.

Labtecpower · Sun Oct 16, 2011 12:50 pm

ok also a 1 euro donation to PC guy

Always a good thing to do

No worries, should have time to do it tomorrow, watch this space

You don't have to hurry, tomorrow I have a party and i'll need the whole tuesday to recover from it

Technician1002 · Sun Oct 16, 2011 3:35 pm

Is there any reason that piston is so long? Shave the length and save weight. There is a sketchup drawing of one of my pistons. Thanks Dewey for the drawing. This fits 1 inch galvanized iron pipe that is sanded out smooth.

Labtecpower · Sun Oct 16, 2011 4:23 pm

I used wide ports again, and I won't be shooting very light projectiles.
I don't think the piston will weigh more than the projectiles.

A slightly longer piston is also easier to seal, it doesn't need a very precise triggering rod.

The Offcial Machinist Thread: Revised 01/04/2014

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