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a Tamiya Bruiser question - are the radius arms necessary?

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Old 10-08-2013, 04:05 PM
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Dmon1996
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Default a Tamiya Bruiser question - are the radius arms necessary?

I am just curious if the radius arms actually do anything.... the rear axle seems solid enough without them. Has anyone run without them?
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Old 10-09-2013, 03:41 AM
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In 2WD HI the old truck with the 750 motor had enough torque to spin the tires. The leaf springs would wrap up and this caused the rearend to hop. Hopping is hard on parts and generally breaks stuff.

I've not messed with the new truck with the 540 so I don't know if it has the same issue.

Take them off and drive it. If the rear hops put them back on.

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Old 10-09-2013, 03:58 AM
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Thanks for the info. I am restoring an original 1985 version but to me they look silly - thought they may be guards for rock crawling. I will play around and see if it is a real issue for my driving....
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