Anyone know the ROT (rule of thumb) for adding weight to the primary? How many rpms roughly can I expect to go down per gram of weight added to each arm? Sled is 02 800. I believe the Ski-doo race manual had a basic formula in it but I don't have one right now.
Rpm's per gram?
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MachZ990, The higher the rpm the more it effects rpm. I use a rule of thumb for mine at 8000 rpm. 1 gram=approximately 100-150 rpm's, this is not always true, but very close. I have not tested pin weight in the 800's though. I'm thinking it should be very close.
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