Just finished my first national with the TRF on a dusty track.
Given it's concept, dust is bound to enter the drivetrain. This is mainly a problem for the differentials. If you cover the gap on top of the rear bulkhead and use the supplied velcro strips for the body, the TRF's drivetrain is shielded well enough to last an entire race, allthough my diffs need cleaning now.
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