I have a sled that is currently engaging at 5500rpm and holding 8500 rpm all the way thru. I would like to keep the engagement rpm but raise the operating rpm to between 9000 and 9200 to perform along with a new set of twin pipes. I have three sets of weights which I can work on the current ones are 46g I have 45g and 47g How much weight do I need to get rid of in theory to gain 700 rpm and where is the best spot heel or toe or complete surface?

I have a sled that is currently engaging at 5500rpm and holding 8500 rpm all the way thru. I would like to keep the engagement rpm but raise the operating rpm to between 9000 and 9200 to perform along with a new set of twin pipes. I have three sets of weights which I can work on the current ones are 46g I have 45g and 47g How much weight do I need to get rid of in theory to gain 700 rpm and where is the best spot heel or toe or complete surface?[/b]


what is the sled and why do you want to run so hi rpm? you might go past the power curve and damage the engine! not to mention the pipes might not be designed to run at that high of rpm. go with what the pipe manufacturer recommends for rpm.
it's not just that easy to do what you're talking about either. clutching is definitely a science. if you want to play around though, you could take a gram off the tips. only about the last half inch is all that's needed for top end. the heel height will affect your engagement. you'd be better off with a primary spring that is the same bottom end poundage, but probably 50# higher compression rate. you could always, and is more recommended, to increase the tension on the secondary spring. see, if you take too much weight from the primary clutch weights, the engine will not be under as much of a load and will not pull as hard. you want to run the heaviest weights you can and still maintain the rpm you desire to ensure the engine will work. read up on clutching by doing some searches on the internet. there is so much you can do it's amazing. if you need more help, please ask. -polaris doc