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 Posted - March 24 2013 : 3:38:03 PM
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I wanna buy a Bachmann Russian decapod and make into a 4-10-0. Is there enough room for a 4 wheel pilot?
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
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 Posted - March 24 2013 : 4:15:49 PM
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| As far as i know, no. It's possible to do but i personally don't thnk it's worth it really. I got to look through my John Allen book, it describes what John Allen used to make his 4-10-0.
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Posted - March 24 2013 : 4:22:58 PM
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where are you going to put the extra wheels,ken
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Posted - March 24 2013 : 11:00:27 PM
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On the front. Thinking of using a Mantua or Rivarossi lead/pilot truck and maybe extend the steamer's pilot. Just a future project. LGL, ya must be thinking of GD #34. Be hard and expensive to replicate as the Varney steamers made in that era are very rare. I have thought about using a Mantua 2-8-2, stretch the frame and so on, but, be a lot of work! I know the boiler would no longer line up with the steam chest. I did think of those Mantua 2-6-2 and under drivers. What ya think?
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
Edited by - Redneck Justin on March 24 2013 11:03:37 PM
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Posted - March 25 2013 : 11:24:39 AM
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| Meh. G&D 34 is a mix of mantua and varney parts. Can still be done, just takes longer to find the parts than it does to build the engine.
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Posted - March 26 2013 : 05:15:56 AM
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You'll have to remove the factory Cylinders, and pilot, extend the frame, and then move the cylinders forward, and add in whats needed for valve gear as its going to "S-T-R-E-T-C-H" out the crosshead guide, AND radius rod on the rods.....As that will greatly increase the crosshead and piston travel as well!
Actually quite a bit of work to do it right!
~John
Many have tried to, and failed, ya just can't repair stupid... 
Do NOT try to Idiot-Proof anything!!!! God, will simply create a better......IDIOT!
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Posted - March 26 2013 : 11:27:04 AM
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* The way I see it, you can live with your cylinders and crossheads for the motion of the main rod remains the same. The distance doesn't change. You need a longer main rod. The piston head remains the same.
* I agree with John on the frame extension. The length of the extension is the diameter of the wheel + flange that is added. If you want to throw in another 1/32", it may help the way it will look.
* With the cylinders moving forward, you need a longer smoke box. That requires 2 seems to be filled and sanded. Also you must make from scratch this tubular insert. A spare boiler may be available from Bachmann along with another pilot axel with wheels. This is the way I would go. A second boiler. This way you have only one seam cut to fill in, and in a smooth section of the boiler. I thnk you can avoid the spot where the water from the injector enters the boiler. Boiler repair area will be stronger.
* So with the boiler and frame lengthened. A new longer set of mainrods. A new front pilot truck, built. It should go together nicely.
v-86
toptrain
" It's a Heck of a Day " !!!
Edited by - toptrain on March 26 2013 12:58:53 PM
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Posted - March 26 2013 : 1:16:37 PM
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quote:* The way I see it, you can live with your cylinders and crossheads for the motion of the main rod remains the same. The distance doesn't change. You need a longer main rod. The piston head remains the same.
* I agree with John on the frame extension. The length of the extension is the diameter of the wheel + flange that is added. If you want to throw in another 1/32", it may help the way it will look.
* With the cylinders moving forward, you need a longer smoke box. That requires 2 seems to be filled and sanded. Also you must make from scratch this tubular insert. A spare boiler may be available from Bachmann along with another pilot axel with wheels. This is the way I would go. A second boiler. This way you have only one seam cut to fill in, and in a smooth section of the boiler. I thnk you can avoid the spot where the water from the injector enters the boiler. Boiler repair area will be stronger.
* So with the boiler and frame lengthened. A new longer set of mainrods. A new front pilot truck, built. It should go together nicely.
v-86
Originally posted by toptrain - March 26 2013 : 11:27:04 AM
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Frank,
You made a good point, HOWEVER to move the cylinders forward, it would require to relocate the Crosshead hanger, which is going to require the longer main rod, BUT is also going to require the radius rod from the valve gear to be made longer as well as it will not "stretch" that far! As it will have to reciprocate, when the engine is in motion, I'm not quite sure you can stretch the movement on the 2-10-0 that far!
Again, I do agree to keep the cylinders positioned right, the boiler will have to be made longer as well as then the cylinder "smoke" pipe, won't line up center of the smoke box, to be center with the smoke stack.
Remember if the pilot truck is made to be a 4- its going to require clearance behind the cylinders, and in front of the first driver for side to side swing and articulation of movement for running purposes! As if the rear-most wheelset of the 4- pilot truck doesn't have the clearance to move freely when running, its simply will derail the locomotive.
Positioning the valve gear hanger is the main part to make sure its right or REALLY close as the movement will depend on the length of the radius rod for the valve gear.
~John
Many have tried to, and failed, ya just can't repair stupid...
Do NOT try to Idiot-Proof anything!!!! God, will simply create a better......IDIOT!
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Posted - March 27 2013 : 07:10:59 AM
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* You need a longer radius arm. I missed that. But I try to add to a discussion. You cant engineer a change like this in 5 minutes. The valve gear hanger i would keep where it is and the cross-head supports needs work and cant be just moved forward on this engine the springs for the front driver are in the way. as to the lead truck clearance it is covered in the distance I mentioned previously.
To Justin. good luck with your kitbash.
frank
toptrain
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Posted - March 27 2013 : 10:42:24 PM
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Lot of work! Might as well use a Mantua. The frame for it to work with 0-4-0 drivers would need a total re-work or just a whole new one milled and machined so the side rods and what not can be used. Any who, just a idea.
" Heck with counting 'em rivets, TRAINS ARE FOR FUN! Not called the Mad Scientist for nothing either!"
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Posted - March 28 2013 : 08:05:41 AM
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* John, Justin, and everybody else. We know that if you really want to do a certain rebuild, and nothing else is aviable to you at that time, you will try to do it with what you have, especially if it is important to you.
* Good luck to everyone in their projects.
frank
toptrain
" It's a Heck of a Day " !!!
Edited by - toptrain on March 28 2013 08:08:16 AM
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Posted - March 28 2013 : 10:44:20 AM
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Thanks! Be my biggest and most ambitious steamer build. Just gotta get the proper donnor parts like 0-4-0 drivers and so on. Thinking of stretching or adding to the frame.I may see how the driver will clear and look around the fire box.
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