Hi Gary. I've got one too. Thhe sort of crabbing sounds like the drive train is causing it to happen. - Been there. Check the sliding joints and the universals are free to move well and freely - on sharp curves the drive torque can stop the the sliding joints in the drive shafts, from sliding and that prevents the trucks from straightening up. This is a known problem of the 12"=1 foot scale Shays too!
Also check if any drive gears have come loose on either the axles or the drive shafts - that can do funny things too. Fix with Loctite. Finally are the adjustable wheels set centrally and in line with each other? Jim Gregg. At 05:44 PM 2/11/02 -0800, you wrote: >Anyone familiar with a Steamlines Shay? >It is wanting to leave the rails a lot. Wheel guage is perfect. ISide frames >were bent, so I straightened them, which reduced resistance significantly. I >am not sure what is causing the trucks to crab then crawl over the rail >head. The wheel profile has more curve than most wheels. I think the trucks >are a bit stiff, which may cause the trucks to not flex enough for track >that is not absolutely level and flat. Any thoughts or suggestions would be >helpful. > >~Gary - enjoying plumes of steam in Eugene, Oregon > >
