"The Wizard"

[Chuck Doan]

http://www.flickr.com/photos/edhume3/sets/72157614192042835/with/6976636828/

Found another Shay project that may be of interest Marty.

[SandiaPaul]

Ed does simply amazingly great work, and Marty, this is what I was talking about, time to take it to the next level! A working engine!!
Browse thru all of Ed Humes pics, he has built a bunch of stuff!

Paul

[SandiaPaul]

Marty,

Try this for the brass:


http://www.mscdirect.com/product/31974785?src=pla&008=-99&007=Search&pcrid=15557577904&006=15557577904&005=21882504424&004=4409695744&002=2167139&mkwid=sJXegN7a0&cid=PLA-Google-PLA+-+Test_sJXegN7a0_PLA__15557577904_c_S&026=nv&025=c

Paul

[Hauk]

http://www.flickr.com/photos/edhume3/sets/72157614192042835/with/6976636828/

Found another Shay project that may be of interest Marty.

Wow. And wow again.

[lab-dad]

That is an amazing Shay! Way above my skill level!
Thanks Chuck!

Paul,
MSC might be a way to go also, thanks.
Getting to the point where i am going to have to get it somewhere.

On that "working" engine;
I dont think I am there yet, I have "stepped up" quite a bit, but not that far.
Also I dont know if it is possible to build a working Class A steam Shay.
Most of them are class B or larger, and typically 3 truck.
Also, I have no desire to mess with steam!
I will likely run my engine very little, I am a modeler, not a railroader.

Thanks guys!
-Marty

[compressor man]

http://www.flickr.com/photos/edhume3/sets/72157614192042835/with/6976636828/

Found another Shay project that may be of interest Marty.

Wow! I dont think that guy learned how to run a mill yesterday, he has been around the block a time or two. Amazing!!

Marty do you have a small mill? You could mill a piece of 3/16 brass in no time.


Chris

[lab-dad]

Chris
Yes i could mill a piece but i would need some 3/16 sheet.
Dont have any of that either.

Here is a shot from under.


The gearbox interrupts the truss rods so i drilled & tapped the sides of the gearbox for them.

Here is a short video of it running

http://i263.photobucket.com/albums/ii121/lab-dad-jones/1367670F-42E1-433F-A09A-33254BD27EC1-76169-00000866B82321A3_zps0e364205.mp4

Marty

[lab-dad]

Not a lot of progress but I did mange to get the valve eccentrics and straps fabricated.
The straps still need the rods that go up and (ultimately) work the valves.
I did not make the penny in the picture though! 



Good news also; more materials are on the way!
-Marty

[Chuck Doan]

Wow! That gearbox is impressive. How did you figure all the ratios/gear sizes?

[finescalerr]

Nice work on the penny. -- Russ

[lab-dad]

Chuck,
I'm not that smart!
I did not make the gearbox, I just got lucky!
The motor & gearbox is made for some "gauge 1" things in Europe......
From the motor to the large output gear they say 30:1, I figure my driven gear (on the crank) I luse a little then it doubles at the pinion on the trucks.
I'm hoping I have enough torque.
if not; we're gonna need a bigger motor!

Thanks Russ! Now if I could do twenties.............
-Marty

[Mr Potato Head]

how do you know the offset for the holes?
mph

[lab-dad]

how do you know the offset for the holes?

Gil, I'm assuming you mean for the eccentrics?
If so, then according to my blueprints i needed a scale .100" offset.


This weeks update;



Not much to "show" but the connecting rods and the piston rods are in along with the cross-heads.
Now when the crank goes around the rods go up and down.
Once the material arrives for the eccentric straps i will have a lot going on!

-Marty

[Chuck Doan]

Just amazing. I assumed you did the gearbox as it looked like your work.

[finescalerr]

Not bad. -- Russ