Long wheelbase trucks are used on the locomotive tenders.

Hmmm. Thanks Barry. I'll give that a try the next (and always inevitable) time something like that breaks. Does that work more like an epoxy or solvent?

The plastics used by Bachmann vary and occasionlly styrene is used. Often, the plastic used seem to be a type of ABS or PVC blend, depending on the item, part or even the different production year of the item. I have had good results using black ABS glue or purple primer / PVC pipe cement, the same as used on putting together a sprinkler system.
Like MEK or any other solvent, be safe and use in a well ventilated area, away from flames.

Quote from: hminky on August 20, 2010, 03:35:18 PM
http://www.smallparts.com/

http://www.microfasteners.com/index.cfm

I agree with hminky with Microfasteners. Excellent service with email orders, got my last two orders delivered within two days! They supplied a free catalogue with my order but their website catalogue is also very detailed.

Check to see if your loco's wheels are dirty. The rail top contacts the flat area of the wheel tread on straight track but the electrical contact surface rides up closer to the flanges when going thru a curve.  Imagine riding on a bike. Flat tire surface on the sidewalk when you go straight but on turns, you ride on the side of the tire. Also, check the track for corrosion or dirt and clean accordingly. The top surface of the rail is visible and easy to clean, but on curves the upper sides of the rail head make contact with the wheel. The best solutions are usually the easy ones

Try this very useful website--www.thistothat.com. It gives great info and suggestions on what to use when gluing different materials to each other and other materials (thus the website name). I've used it often.

   I am almost done converting an inexpensive LGB 'Gnomy' caboose into a 2 axle bobber to go with my skeleton log cars. I cut off the plastic end 'wall', enlarged the end doors, added 1/4" to each end platform, installed KD couplers, drilled a center mounting hole in the floor, and popped an ON30 passenger truck under the body. The journals match up to the molded Gnomy undercarriage springs and the trucks fit into the frames with very little trimming. The Gnomy frame covers the top half of the passenger truck and the couplers match up to the log buggies. The 'Gnomie' is shorter and lower than the Bachman Caboose, and looks good behind the Shay.
   I also converted a Bachman C&S caboose, trimming an underframe of an inexpensive Fleishman 2 axle car (Allied Trains had them real cheap). It turned out very well.
Another source to consider is the undercarriage of an H-O Thomas Troublesome Truck. The two axles are spaced slightly wider than an ON30 passenger truck.