Author Topic: 1925 Case 65 hp. traction engine (small version)  (Read 8924 times)

Offline gbritnell

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1925 Case 65 hp. traction engine (small version)
« on: December 25, 2009, 09:07:18 PM »
Gentlemen, this is the small version of a Case traction engine. I used the plans from my 1/12 Case engine and scaled it down. It's about 1/75 scale. Just a little larger than HO. It will run on compressed air but the piping is so restrictive that will only run on about 25 lbs. Most of the small fasteners are 1x.25 mm. The hardest part was making the rear wheels. Being that the cleats are layed out at an angle to the wheel axis I couldn't just turn them at an angle and cut them. I mounted the stock in my dividing head, turned the head at the appropriate angle then cut one side of each cleat with a degree cutter, then repeated that for the other side of the cleat. I then made a cut between each of the cuts to remove the extra material. The dividing head was then turned to do the other row, same procedure. After machining I went back in between each cleat and filed the contour with a needle file.
George

Offline dsquire

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #1 on: December 26, 2009, 01:03:43 AM »
George

I hardly know what to say.  It looks like a nice model until you see the quarter sitting there and realize that it is 1/72 scale. Then it becomes "Oh my gosh, how could he do that?". A very nice model that you can be proud of George. Thanks for sharing it with us. :ddb: :ddb:

Cheers  :beer:

Don
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'til your good is better,
and your better best

Offline Bernd

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #2 on: December 26, 2009, 08:41:09 AM »
George,

What a beautiful model.  :jaw: That is excellence in modeling. :bugeye:

The detail is outstanding. Can't believe it actually works. Thanks for sharing your talent with us.




Don, I'd like to trade all those Canadian quarters you have for Georges US quarters.  :lol:

Bernd
You can't fix "STUPID".

Offline Stilldrillin

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #3 on: December 26, 2009, 09:54:54 AM »
Very nicely done George!  :thumbup:

That`s beautiful!   :clap:

David D
David.

Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline kvom

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #4 on: December 26, 2009, 04:46:45 PM »
Quote
It looks like a nice model until you see the quarter sitting there and realize that it is 1/72 scale.
Even more impressive when you know it's a dime and not a quarter.   :clap:

Offline andyf

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #5 on: December 26, 2009, 05:09:34 PM »
I haven't even a dime to my name  :(  so I had to look it up. About 0.7", and scaling from that makes the entire model about 6" long. Wow!

Andy


     
Sale, Cheshire
I've cut the end off it twice, but it's still too short

Offline ieezitin

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #6 on: December 26, 2009, 05:35:02 PM »


Absolutely outstanding, superb piece of miniature engineering and machining. I tilt my hat to you sir.

Anthony.
If you cant fix it, get another hobby.

Offline cedge

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #7 on: December 26, 2009, 08:20:34 PM »
Some things just make a grown man want to cry. .... :bow:  Excuse me while I go pee on my machines ...again.

Steve

Offline dsquire

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #8 on: December 26, 2009, 08:51:47 PM »
OK Guys

Time to fess up.  :doh:  I just took for granted that it was a US quarter in the picture. Now upon closer inspection I can see that it is a US dime. Now I can see why some of the posts didn't make sense to me. I can't even blame it on drinking as I haven't had that many. I guess I will have to blame it on engaging keyboard before brain. :lol: :lol:

You win some, you loose some. :ddb: :ddb:


George
What I said in my first post but double it at least. :wave: :wave:

Cheers  :beer:

Don
Good, better, best.
Never let it rest,
'til your good is better,
and your better best

tumutbound

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #9 on: December 27, 2009, 12:32:22 AM »
A dime is a tad under 18mm for those of us that don't see one on a regular basis.

That said, the model is amazing in it's detail.
George, how long does it take you to make something like this?

Offline gbritnell

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Re: 1925 Case 65 hp. traction engine (small version)
« Reply #10 on: December 27, 2009, 08:16:23 AM »
First off, thanks for all the great comments. Geoff, I don't know exactly how long it took to build this one, except for the rear wheels it was just a matter of making a bunch of really small parts. I would think if I had to make another one I could accomplish it in about 60 hours. That would be making the assembly fixtures also.
George