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RPM/Clutching? where does a motor REALLY peak and effects

First off let me say I know all motors have a different power curve or hot spot etc. and also this is better suited for performance BUT since that place is gone I guess here is best.


Since most sleds with some exceptions have a 8200 best RPM to HP I will just defer to that for point of this post.

I have a 800 Poo that I am running NOS on and under normal riding with no NOS and current set up I will pull 8250 avg depending some on snow conditions. If on the NOS I will hit 8800. If I add the appropriate weight for the NOS it kills my clutching without. I have done the 1/2 gram thing and this is where I am at. If I go full gram it drops me down to 8100/8600. I know this doesnt seem like much but 8100 can get dropped fast under heavy loads and kill your momentum/rpm.

My question is for you guys that have seen a dyno curve in these #'s where does the motor REALLY nose over/go flat? Is it at the 8300 and all wasted above that? or are you edging power all the way up to 8700? then it will just become a question of how good a motor will hold together rather than where it noses over. Whats your thoughts on turning 87 8800 RPM on a motor?
 
When I had my sled dynoed it made peak hp at 7700 and then hp dropped the furher up you went on rpm. Does that mean I should try and clutch it for 7700? I haven't done that but I am curious about it.
 
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