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sled208
Questions:
If you go from a 4 weight drive clutch to a 3 weight clutch, can you mathmatically figure out the conversion like this:

4 weights x 78 grams/weight = 312 total grams.
312 total grams (divided) by 3 weights = 104 gram clutch weights
(so I would need 104 gram weights for my new 3 weight clutch?)

Why does the 2007 arctic cat service manual say that peak HP is achieved at 73-7500 RPM's on the F1000 and the M1000 BUT on the Crossfire 1000 it says that peak HP is produced between 78-8000 RPM's? Wouldn't a 1000 cc motor make it's HP in the same spot regardless of what chassis it's in? If either were similar shouldn't it be the M1000 & the Crossfire?

Click to view attachment

Is there anyway to determine how many grams would need to be taken off to gain 500 RPM's?


Thanks for your help!!!



flasch7192
QUOTE(sled208 @ Sep 14 2008, 10:53 PM) *
Questions:
If you go from a 4 weight drive clutch to a 3 weight clutch, can you mathmatically figure out the conversion like this:

4 weights x 78 grams/weight = 312 total grams.
312 total grams (divided) by 3 weights = 104 gram clutch weights
(so I would need 104 gram weights for my new 3 weight clutch?)

Why does the 2007 arctic cat service manual say that peak HP is achieved at 73-7500 RPM's on the F1000 and the M1000 BUT on the Crossfire 1000 it says that peak HP is produced between 78-8000 RPM's? Wouldn't a 1000 cc motor make it's HP in the same spot regardless of what chassis it's in? If either were similar shouldn't it be the M1000 & the Crossfire?

Click to view attachment

Is there anyway to determine how many grams would need to be taken off to gain 500 RPM's?
Thanks for your help!!!

pipes are different so is the intake design im sure the ECU may have a different programing as well
mdw800
X/F 1000's runs @ 7200-7400. The 7800 8000 is for the 800cc. My 07 X/Fire 1000 likes 7100-7300 with the D&D Y pipe. The 1000 has a rev limiter & its set @ 8000 rpm's max. Book is wrong!!!!!!!!!!!!!!!!!!!
As for the 4 tower v/s three tower. The three tower spider location is different & the leverage it makes is completely different & produces more squeeze with less swing weight. I like the 4 tower much better. Stock weights are 70 gram's X 4. Most guys run 73 gram's with a bigger helix to boot with great improvement over stock set-up.
Mike
sled208
QUOTE(mdw800 @ Sep 15 2008, 06:55 PM) *
X/F 1000's runs @ 7200-7400. The 7800 8000 is for the 800cc. My 07 X/Fire 1000 likes 7100-7300 with the D&D Y pipe. The 1000 has a rev limiter & its set @ 8000 rpm's max. Book is wrong!!!!!!!!!!!!!!!!!!!
As for the 4 tower v/s three tower. The three tower spider location is different & the leverage it makes is completely different & produces more squeeze with less swing weight. I like the 4 tower much better. Stock weights are 70 gram's X 4. Most guys run 73 gram's with a bigger helix to boot with great improvement over stock set-up.
Mike


Well, I'm glad I'm not the only one to call BS on the book! I've got the bikeman torsional conversion kit and I'm running 77grams on the primary at low elevation. The RPM's are hanging in there close to 7400 but didn't know if I should be shooting for a higher RPM range. I bought the 3 weight clutch to run in the mountains so I didn't have to swap weights all the time and don't know what to put in it for out west.
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