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 2-4-4-2 Disassembly ?
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Author Previous Topic: JERRYS STUFF Topic Next Topic: Geezers lounge - Volume 23  

Chris333
Engine Wiper

Posted - 03/02/2018 :  2:36:33 PM  Show Profile  Reply with Quote
Just got a Bachmann 2-4-4-2 and it is a nice loco. Of course I want to re-detail a lot of stuff.

Before I start breaking stuff, does anyone know what holds the boiler and cab in place?

Thank you.

Country: | Posts: 266

desertdrover
Engineer



Posted - 03/02/2018 :  5:06:26 PM  Show Profile  Reply with Quote
Start by removing the four screws under the cab at the corners (circled in yellow). Then, remove the boiler by undoing the two screws directly below the firebox (circled in red) once these have been removed, the boiler shell will lift off, as the only other thing holding it on is a small tab at the front of the chassis. If you know someone with a 2-6-6-2 the locomotives are pretty much the same for breakdown.




Country: USA | Posts: 17263 Go to Top of Page

Chris333
Engine Wiper

Posted - 03/02/2018 :  5:30:52 PM  Show Profile  Reply with Quote
Thank you. That worked perfectly!

Any ideas how to get it to run better on 15" radius? I took the front steam pipe off and gave the front pick-up wires more slack. There is still something that wants to tilt the front "truck" on curves.

Wonder if I give the draw bar to the front drivers a little more length?



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Chris333
Engine Wiper

Posted - 03/02/2018 :  7:18:16 PM  Show Profile  Reply with Quote
Well I tore it all apart.

Made a new draw bar, didn't help. Put old one back in.

Put the steam pipe back in.

Ground out a little of the frame behind the gear tower (in red). Worked some, but not all.

Ground the front sides of the gear tower (in yellow). This worked!

I do have the front pick-up wires out right now and plan to replace them with more flexible wire.

https://photos.app.goo.gl/Vpu03bQuBtlpvwUL2



Edited by - Chris333 on 03/02/2018 7:19:00 PM

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desertdrover
Engineer



Posted - 03/02/2018 :  7:48:18 PM  Show Profile  Reply with Quote
quote:
Originally posted by Chris333

Thank you. That worked perfectly!

Any ideas how to get it to run better on 15" radius? I took the front steam pipe off and gave the front pick-up wires more slack. There is still something that wants to tilt the front "truck" on curves.

Wonder if I give the draw bar to the front drivers a little more length?


quote:
Originally posted by Chris333

Well I tore it all apart.

Made a new draw bar, didn't help. Put old one back in.

Put the steam pipe back in.

Ground out a little of the frame behind the gear tower (in red). Worked some, but not all.

Ground the front sides of the gear tower (in yellow). This worked!

I do have the front pick-up wires out right now and plan to replace them with more flexible wire.




Sorry, but Bachmann recommends 18 radius for their On30 Locomotives. 15" is a tight curve for the 2-4-4-2 to handle. I think you will always have trouble no matter what you try.




Country: USA | Posts: 17263 Go to Top of Page

Chris333
Engine Wiper

Posted - 03/02/2018 :  9:11:09 PM  Show Profile  Reply with Quote
While we are here do you happen to know the thread size of those 4 cab screws? I'm sure they are metric, about 1.6mm wide threads. But I'd like to know the exact thread size.

I notched the side of the frame under the cab so it didn't looks so thick. Now I need shorter flat head screws.

Thanks.



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desertdrover
Engineer



Posted - 03/03/2018 :  10:28:56 AM  Show Profile  Reply with Quote
quote:
Originally posted by Chris333

While we are here do you happen to know the thread size of those 4 cab screws? I'm sure they are metric, about 1.6mm wide threads. But I'd like to know the exact thread size.

I notched the side of the frame under the cab so it didn't looks so thick. Now I need shorter flat head screws.

Thanks.



Those four screws are M2x6mm. You could cut the screws down if it is shorter that you need. Just cut the screw shorter, and file the end down a bit to clean-up the end.




Country: USA | Posts: 17263 Go to Top of Page

Chris333
Engine Wiper

Posted - 03/04/2018 :  6:02:43 PM  Show Profile  Reply with Quote
Thanks. I need short screws, but also counter sunk now.

I milled the edges of the cab floor so it didn't look so thick. Here it is now:
https://photos.app.goo.gl/pGRE55eMQxqtO2rs1



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desertdrover
Engineer



Posted - 03/05/2018 :  10:06:55 AM  Show Profile  Reply with Quote
quote:
Originally posted by Chris333

Thanks. I need short screws, but also counter sunk now.

I milled the edges of the cab floor so it didn't look so thick. Here it is now:
https://photos.app.goo.gl/pGRE55eMQxqtO2rs1



That is a fine looking mill job! Well done!




Country: USA | Posts: 17263 Go to Top of Page
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