Post by Bob Vehring on Feb 20, 2012 17:47:26 GMT -5
The next question is do you use the band brake. Max Torque makes a clutch called the Draggin Skin it is a kart racing clutch, very ajustable and easy to work on. A strong Champ engine is on the high side of the HP it will work with. For several years, we did offer a Tomar disc clutch that they made a special drum for to accept the band brake. Tomar went out of business several years ago but has been brought back by a new company, as of now they are not making the band brake drum due to low sales. We have been trying to buy back any used ones we can find to keep them out there, but they don't stay around long. you can try to call Regan to see if he currently knows of any if thats what your looking for
Post by Jim Donovan on Jun 20, 2012 16:08:37 GMT -5
The normal shoes in a snowmobile clutch weigh 62 grams in Polaris, Arctic Cat and Ski-Doo. Max-Torque makes them for all three companies. If you want to increase the engagement you can do it by putting in the black spring which will bring up engagement from 2,200 to 2,700. And you can change to the fun kart shoe that only weighs 46 grams which is 1/3 less. This will bring engagement up to 3,000 rpm.
You can do it in steps by only changing every other shoe, light heavy, light heavy, light heavy and the green spring.
What I tell the racer is buy several shoe sets up so you can swap them out fast and see what works best for you that day. The secret to a quick swap is don't put the snap ring on the end of the clutch so you can just pull the shoe assembly out of the drum. You hold it in place with a bolt and washer so you really don't need the snap ring. The clutch cannot go any where and it only takes a minute to unscrew the bolt and put another center in.
Mark the back of the drive plate at what rpm it engages. This way you can look at it and make a fast change. Great video on YouTube- max torque clutch assembly video to see how easy it is to do your set up.
Post by madziarracing on Dec 7, 2012 1:58:31 GMT -5
Jim, on the Arctic cat 120's when running with out the snap ring there is a clearance issue. The clutch drum will rub on the head of the bolt which holds the brake bracket. You can alleviate it by taking the washer off the bolt and switching to a button head bolt. I was thrilled when you told me about running without the snap ring a couple years ago. Needless when I saw the issue with clearance I knew there had to be a workaround.