Reply to "Sunset SD40-2's"

bob2OGR Forum Member

On the tank drive - it may well be the most common, but it probably doesn't work well on things like F7s, GP7s, or RS-3s. The problem is geometry - the angle of the u-joints becomes extreme with smaller wheelbase models. An F7 would simply lock up on a 36" radius curve. U joints have a critical angle, beyond which they just don't work at all well.

1/9/208:33 PM

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