"The Wizard"

[lab-dad]

Steam chests are done, just need to work out the manifold.


And decided to do some woodworking.
Man does not live on brass alone.
As mentioned earlier I am using walnut.
Not sure how I will finish it.


Guess i should have moved my daughters pencil up from behind the shop window!
Nice to have a background for this thing!

-Marty

[Peter_T1958]

That lovely brass work is absolute top quality craftsmanship! I really envy all those engineers like you

Congrats,
Peter

[finescalerr]

Walnut? First jewelry and now furniture. -- Russ

[Chuck Doan]

Georgeous! I will be interested to see how you fasten the running board brackets.

[TRAINS1941]

Beautiful work.

Jerry

[Malachi Constant]

It's really freakin' cool to see this thing under construction in a scale shop!    -- Dallas

[Ray Dunakin]

Marvelous work!

[lab-dad]

Thanks guys!
As far as the running boards; scale hardware has small (1.0 - 1.6mm) carriage bolts.
I think I only need about a hundred............
-Marty

[Arno Boudoiron]

Hi Marty, your work is beautiful 

[marc_reusser]

Just crazy, man!

[lab-dad]

Thanks Guys!
Marc, you know i am crazy!

Feeling "cranky" (hey, where has that guy been-he had cool stuff!).
Anyway, I worked on the crankshaft.
Thought some might enjoy seeing the process.
i did not invent these steps but looked hard to find them.

I started with 4 - 1.1" squares and drilled a hole in the center and another inline at a .3125" centerline (10" throw)

Then i turned the squares .890" round using a machine screw in the center and a pin in the offset hole.





Then I drilled a recess & hole in a scrap of plywood to remove most of the material for the counterweight.



Kinda looks like a deranged pac-man! I like it!


Using pins I mounted the parts in the mill vice and machined the straight part of the counterweight.



The finished parts.
Sorry I did not get a shot of the angled cut set-up.
Note there is a .020" radius at the corner to reduce stress. (a sharp edge can crack easier - not that there will be any real stress on this crank.)


And the glamor shot!


Sadly this is only temporary.
I need to install a large driven gear between the throws for the motor.

[jim s-w]

Hi Martin

Is this actually going to work via compressed air or something?  (it looks like it should so far)

Regards

Jim

[Ray Dunakin]

Too cool!

[SandiaPaul]

Weird...how the heck did I miss this thread totally?? Maybe the title?

Great work Marty. As a machinist I think you are so close to a working model that your next effort should BE a working model.

Paul

[lab-dad]

Thanks!
Jim,
I am hoping to power this with an electric motor.
See here;https://slatersplastikard.com/linePage.php?code=GBG3
The whole design is a "work in progress" since it really has not been done like I am doing and in 1/16.

Paul,
I think you mean a steam operated model, and may be, someday. But they look like a PITA
I still plan to do another plymouth/tractor inspired loco as well.

Glad you guys are enjoying.
-Marty