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Old 02-12-2013, 06:32 AM   #1
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Default Rack and pinion steering?

Why don't rc cars use rack and pinion type steering? I'm a layman but I think it could reduce space, simplify and reduce the number of components. The servo could directly drive the rack by putting a pinion on it. The awesomatix touring car already seems to have a well designed rack seen here: http://awesomatix.com/steeringsystem.html but the drivetrain would have to be belt-drive. Perhaps a belt on top but geared at the differentials like an SC10 4x4. This would allow centering of half height steering servo on the chassis. Basically center everything.
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Old 02-12-2013, 08:02 AM   #2
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Take a look as well at the TC3 and TC4. I think the biggest problems with a rack and pinion would be enough throw from the rotation of the servo and durability. In all RC steering I have seen everything is a "captured" system, meaning when you hit something hard the worse that will happen is you might pop a ballcup off. With a rack you have the issue of jumping teeth, stripping teeth, dirt/grime building on the rack and causing it to stick, the list goes on.

I think it would actually be bigger to have to cover all these issue and not really any added benefit.
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