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Old 08-03-2011, 09:51 PM   #1 (permalink)
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clutch long taper/short taper? Difference?

got a question for the parts goo-roos

i was looking for compatable clutches for my sled, and the diameter and size match (33mm 8.25"; between similar clutches), but the one im looking at says its a "long taper"....i googled but couldnt find if my sleds clutch was one or the other. my primary clutch part number is 0746-245, the one i'm looking at is 0746-215.

does the long taper have to do with the output shaft for where the primary clutch connects to? if so, i would assume that affects the offset for matching/aligning the secondary? and having to shim (or re-shim) the secondary?

any....help...please

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Old 08-04-2011, 06:06 AM   #2 (permalink)
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Thats how I understand it? But what is wrong with your clutch? If it's a 33mm it is fairly new!
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Old 08-04-2011, 06:21 AM   #3 (permalink)
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They make both long and short taper crank noses that the clutch mounts to.
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Old 08-04-2011, 06:46 AM   #4 (permalink)
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But who else uses a 33mm taper?
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Old 08-04-2011, 09:28 AM   #5 (permalink)
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kc - i'm buying the extra clutch so i can use the (new) one as my "testing" clutch, and make the adjustments to that one - beit new/different weights/springs. so if something i know doesnt work, i can just switch out clutches for next weekend (and wait for new parts) or change it out that day if i take them with me.

plus, ill have an extra one on reserve. the way i look at it, if something happens to my current clutch i'm going to have to wait to order it, and/or pay a premium...and potentially miss a weekend of riding...and thats not good. so i found this one for a really good price.

so, back to the taper...if i went with the long taper, how would it affect the offset for the secondary? or would i just need to get different shims and just play with the allignment.? Plus, it would still fit, right (long taper on my sled)?
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Old 08-04-2011, 04:53 PM   #6 (permalink)
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If it does not match the current taper, then it will not be usable for you.
The larger taper is usually used on bigger engines.
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Old 08-05-2011, 06:38 AM   #7 (permalink)
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The 33mm taper is ONLY on the 02 800-900 and 1000cc Cats! Who else has a 33mm clutch, much less a long taper?
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Old 08-17-2011, 02:49 PM   #8 (permalink)
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sorry - i was gone on vacation and didnt check sf.

but, getting back to the clutch issue.

i gave the clutch info & part number to three seperate cat dealers, reps, and parts distributors, and they all confirmed that clutch WILL work for my sled.

the biggest issue everyone said is having the clutch weighted/balanced for the crank in your motor. if its to heavy/light it will either snap or vibrate your crank to oblivion.

for example, if you take the clutch off the M1000 and put it on my M8, it will snap the crank within 200 miles. the same goes for putting my M8 clutch on a M1000.

so, the clutch i wanted to buy (which i already did), is weighted/balanced for my motor/crank. the only thing i needed to remove/replace is the primary spring and weights (as it was set up for a trail seld and not mountain riding).

everything else on the clutch will merry up just fine.

so...little fun fact wednesday from the cat department :-)
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Old 08-17-2011, 05:41 PM   #9 (permalink)
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Thanks for the update!
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