Carb Riser Questions

[JSeery]

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Originally Posted by scooder

Less rpms for same speed near top end??
A carb spacer can't possibly change the rpm to road speed ratio, that's fixed by the rear end gear ratio.

I skipped over that part as I assumed it has to be a perceived difference. As Martin states, RPM to MPH is a fixed ratio that is determined by gearing and tires and not by engine performance.