Open Source GE 44 ton 1.6" Diesel locomotive

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Glenn Brooks
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Re: Open Source GE 44 ton 1.6" Diesel locomotive

Post by Glenn Brooks » Sun Feb 09, 2020 3:48 pm

Benjamin,

Here’s a few pics of a Whitcomb 44 tonner. Not a GE, but similar.

I could likely pull a few dimensions of components if you need them.

Glenn
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Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....

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Benjamin Maggi
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Re: Open Source GE 44 ton 1.6" Diesel locomotive

Post by Benjamin Maggi » Mon Feb 10, 2020 10:32 am

Glenn,
I have plenty of information on GE 44-tonners, but thank you for the pictures. I was looking for links to the builder, but apparently there is a Facebook page.
Ben
"One cannot learn to swim without getting his feet wet." - Benjamin Maggi
- Building: 7.25" gauge "Sweet Pea" named "Catherine"

WJH
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Re: Open Source GE 44 ton 1.6" Diesel locomotive

Post by WJH » Tue Feb 11, 2020 4:53 pm

Hi guys, sorry for my absence. I had recently just started working on this project again. Was cleaning up some wheel castings.

WJH
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Re: Open Source GE 44 ton 1.6" Diesel locomotive

Post by WJH » Sun Feb 23, 2020 7:09 pm

I created a new branch called "Development" on my Github. Playing around with changing the drive system to a geared one, 10:1 reduction for use with a brushless DC motor. Going High Tech, also using ball bearings instead of needle bearings and hardened axles. Going to design and 3D print a gear casing that looks scale and will keep the dust out of the gear train. It won't be used for any kind of mechanical strength, but rather a wrapper. Haven't designed that yet.

rkcarguy
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Re: Open Source GE 44 ton 1.6" Diesel locomotive

Post by rkcarguy » Mon Feb 24, 2020 1:07 pm

One thing I'd like to mention, is that we have several local shops with lasers and 2 with water jet cutters, but only one 3D printing business that is extra expensive. The GE 44 ton locomotives and others similar to it like the Southern Pacific narrow gage X-1, share fabricated plate trucks instead of castings like most diesels, and makes them very easy to model using laser cut or water jet plate parts. Just my opinion, but open source would be much more viable for the masses if designed around more common forms of production, or at least the option of.

ERIE S-1 BERKSHIRES
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Re: Open Source GE 44 ton 1.6" Diesel locomotive

Post by ERIE S-1 BERKSHIRES » Tue Feb 25, 2020 7:53 am

Funny you mentioned sp-1 Little Giant X1 that's my next project working on the truck drawings right now

rkcarguy
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Re: Open Source GE 44 ton 1.6" Diesel locomotive

Post by rkcarguy » Tue Feb 25, 2020 11:27 am

ERIE S-1 BERKSHIRES wrote:
Tue Feb 25, 2020 7:53 am
Funny you mentioned sp-1 Little Giant X1 that's my next project working on the truck drawings right now
Our shop made a set for another member here about a year ago for 12" gauge that will utilize take up bearings with the tensioner end cut off riding on functional springs and equalizer bars. Don't know if he's got it assembled yet but they looked really good in CAD and the finished laser cut parts fit really nice.

WJH
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Re: Open Source GE 44 ton 1.6" Diesel locomotive

Post by WJH » Thu Feb 27, 2020 1:13 am

rkcarguy wrote:
Mon Feb 24, 2020 1:07 pm
One thing I'd like to mention, is that we have several local shops with lasers and 2 with water jet cutters, but only one 3D printing business that is extra expensive. The GE 44 ton locomotives and others similar to it like the Southern Pacific narrow gage X-1, share fabricated plate trucks instead of castings like most diesels, and makes them very easy to model using laser cut or water jet plate parts. Just my opinion, but open source would be much more viable for the masses if designed around more common forms of production, or at least the option of.
This locomotive is perfect for having things laser cut or water jet cut. The 3D printed parts are to be done on a consumer level 3D printer, they are nothing more than dust covers, even optional, or you can adopt the earlier drive system that simply uses roller chain and sprockets. If you asked me, I'd even print them for you at the cost of material and shipping which would probably be less than $20 for all of them.
The real expensive part of my design, and it's only expensive if you don't have a TIG welder. The trucks are weldments, the frame is a weldment, the body is to be welded as well.
If you join the Experimental Aircraft Association which is 40$ a year? They give you access to the latest student edition of Solidworks. Just go to the Github, download the files and explore it in Solidworks. I could care less if you decided to steal my design, start a small business around it and produce these things. I'm doing it for the hobby, to get more people interested in it and metal working. The cost of entry into this hobby is high enough.
Oh, and you can even upload your own changes to my design, and I can merge them into the design, thats the nice thing about Github and open source. You could even start your own branch and take it in an entirely different direction if you wanted.

WJH
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Re: Open Source GE 44 ton 1.6" Diesel locomotive

Post by WJH » Sun Mar 01, 2020 1:05 am

Further progress...
02292020Update.JPG

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