Well,, you have the answer
This summer i dynoed a small 50cc to 19.22hp, and we never started from standstill.
We rolled up into about 200rpm on the roller, then gave it hell
After a run there wasn´t almost any heat buildup at all.
In the future, try remember that, start from rolling.
This is much more less aggressive to the belt and gives more precise numbers from pull to pull.
Rgds.
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