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  1. #1

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    supercharger clutch questions???

    Today at work we were discussing the clutch washers when we started questioning why it needs to slip at all?
    I don't have my ski yet and haven't seen anyone post about this yet maybe this has already been answered?
    Is the clutch slipping at idle? Or in the upper rpms?
    Why does it need to slip?
    Thanks


  2. #2
    Tennessee's Avatar
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    The only time the clutch should slip is when you nail it or cut the gas. The wheel is spinning 40,000 plus rpm's at full speed. When you cut the gas it would have to slow down soo fast that the shaft would have to be probably 3" in Dia. not to spin it self in two. I think it has been tried and broke the shaft the first time out.

    Quote Originally Posted by boostin View Post
    Today at work we were discussing the clutch washers when we started questioning why it needs to slip at all?
    I don't have my ski yet and haven't seen anyone post about this yet maybe this has already been answered?
    Is the clutch slipping at idle? Or in the upper rpms?
    Why does it need to slip?
    Thanks

  3. #3

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    Thanks that makes sense now. We are all auto techs and know about automotive superchargers so this was new to us.

  4. #4
    Website may not be suitable for small children WOT's Avatar
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    In automotive SC's, the belt can slip. If its a roots type with a Gilmer belt (cog-toothed belt) it doesn't have to slip because the SC is turning just a little above engine RPM, typically 8,000 - 10,000 RPM max. If it's a centrifugal (like a Vortech, etc), it might spin 40,000 to 60,000 rpm, but when you shift the car, etc it just slips the belt. That's why you don't see cog-toothed belts on centrifugal SC's. If you did put one on, it would strip out the internal gearing in the SC.

    Quote Originally Posted by TennesseeRXP View Post
    ...When you cut the gas it would have to slow down soo fast that the shaft would have to be probably 3" in Dia. not to spin it self in two....
    More likely, it would just grind all the teeth off the SC and flywheel gear, but you get the picture.

    It's hardest on the SC when the ski jumps out of the water and hits the rev limiter and then re-catches and drops the rpm very quickly.

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