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[R.T.Fischer]

Tried to do a little search on 530 chain clearance & rub issues, to chain guard, and chain guide. Were 530 chain & sprockets O.E. on 1rst year '72 Jackpiner ? Trying to keep it original as it has O.E. alum. front & back fenders, and original Radaelli steel rims. Search board is locked down for some reason.

[Larry Perkins]

Early Jackpiners were 530 but heavy, hurt revs, and overkill.  Most everyone switched to 520 including eventually the factory.

Larry P