The engine I sold Woodstock was good to about 7500 or so. Peak power though was at just over 6200 so I set the rev limiter at 6800 in the interests of longevity. And yes, on some hillclimb courses, I did drive into the limiter and at one airfield sprint - did it in top gear...
The rev counter on the three wheeler is 0 to 5000 and was chosen as peak power on that is about 4200 so no need to paint a red line. If it reads a number - fine, attempting more so, bad.
