Review: RJM AFP Clutch Pedal System

Ryan @ RJM

DoomMonkey, Yes this mechanism both locks the sliding track for adjusting the clutch rod angle and allows setting the exact side-tension required on the main bearings to reduce any side-side play in the pedal arm. Its worked flawlessly for 3 years now in multiple product designs without any issues of loosing height adjustment.
Now when you tightened these bolts did you follow the Install Guide Specific Procedure for Tightening these bolts or did you just crank them down tight without regard for the tension setting procedure? These bolts can absolutely lock the pedal arm bearings solid if you don't follow procedure which is what I suspect you where doing while bench testing.

The sliding track plates have so much surface area spread over 6 friction surfaces they act much like a quadruple plate clutch... where very little pressure plate force is required to generate a large holding capacity. Similarly the bracket needs very little bolt tension to result in a very large holding force on those plates, so much in fact these plates are already too stiff to move by hand by a 1/4 turn past where the lock washers are just compressed and then you still have several more turns before the bearings start to tighten up.

Finally once installed and set correctly the paint on the bearing surfaces will wear off and the bearings will break in after a day or two of driving to make them slightly looser yet after install.

So I have no worries that it'll function flawlessly once installed following the guide instructions.

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