12 SG open primary ???
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Tourer
Joined: Oct 2011
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From: canton ga
12 SG open primary ???
In territory I know nothing about. I have always liked the "look" of an open primary belt. Can you do this or has anyone done this on a newer model SG? Pics would b nice if you have !!!
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Joined: Sep 2010
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From: Phoenix '53, '88, '09 Big Twins
It is easy, requires a kit with new comp or solid front pulley, new clutch basket, new clutch parts.
there are downsides aplenty.
a dry clutch does NOT give as good a feel as a wet clutch
and there is nothing worse than a rock bouncing up into the primary and blowing teh belt off.
early models have dry clutches- the clutch would perform vastly different depending on temperature*- for this reason the tin cover was often spaced out, maybe the inspection and derby covers left off...eventually the entire cover might be left off.
the old tin covers were not structural, as the motor was bolted to the frame, and the tranny was bolted to a frame mounted sliding adjuster ( so as to adjust the primary chain)- after which the rear wheels would be adjusted for final chain drive tension.
on your bike the primary cases provide structural strength as the motor and tranny are bolted to gether and the whole drivetrain "floats" on rubber bushings
mike
*when hot, the plates would expand, causing teh bike to creep with the clutch disengaged...when cold, there may not be enough grab for the kicker to turn over the motor
there are downsides aplenty.
a dry clutch does NOT give as good a feel as a wet clutch
and there is nothing worse than a rock bouncing up into the primary and blowing teh belt off.
early models have dry clutches- the clutch would perform vastly different depending on temperature*- for this reason the tin cover was often spaced out, maybe the inspection and derby covers left off...eventually the entire cover might be left off.
the old tin covers were not structural, as the motor was bolted to the frame, and the tranny was bolted to a frame mounted sliding adjuster ( so as to adjust the primary chain)- after which the rear wheels would be adjusted for final chain drive tension.
on your bike the primary cases provide structural strength as the motor and tranny are bolted to gether and the whole drivetrain "floats" on rubber bushings
mike
*when hot, the plates would expand, causing teh bike to creep with the clutch disengaged...when cold, there may not be enough grab for the kicker to turn over the motor
Last edited by mkguitar; Nov 18, 2013 at 11:03 PM.
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Joined: Nov 2011
Posts: 57
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From: Kaufman TX
I put a Primo Rivera on my 11 SG and love it. You can view my initial post under "Bagger with open belt drive". I have pics there. I now have about 2K miles on it and I can say that the pro clutch feels better then my stock wet cluch, engine RPM revs quicker as it is rotating half the mass and with how it is covered there is a slim chance for a rock to just fly up in the pullies
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Joined: Nov 2011
Posts: 57
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From: Kaufman TX
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Whitey22
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