A Waste of Money ?

Dear Ralph: I stopped by both of my Ski-Doo dealers to buy a replacement spring for my secondary clutch. As it turns out neither of

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Share Your Secrets

Dear Ralph: Where can I get the specs for trail porting my engine (Rotax 670)? Tom Scheideman Tom: There aren’t really any instructions, books, or

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Freeplay Removal

Dear Ralph: What is the best way to take the play out of my ’93 EXT steering ? My sled has 3000 miles on it

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Roller Clutch Blues

Dear Ralph: I bought a roller secondary clutch kit last year based on all the good things I’ve been hearing, but I was not happy

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Ideal Clutch Tuning

Dear Ralph: Much has been made of the multi-angle helix in the driven clutch. I’ve heard and read that it can substantially improve acceleration without

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Heavy Pipes

Dear Ralph: Why are the OEM pipes so heavy ? If the aftermarket pipes are so much lighter and provide more horsepower, why can’t the

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Case Reed vs. Piston Reed

Dear Ralph: What is the difference between “case-reed” induction and “piston-reed” induction ? Are there advantages or disadvantages to either one of the methods ?

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Rebuildable Silencers

Dear Ralph: My dealer told me that when I buy a set of aftermarket pipes to make sure that they have rebuildable silencers. Why is

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