Quote:
Originally Posted by freebeard
Until the added extra pulley, they would spontaneously change themselves.
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There were always four pulleys. What they added later was a belt guide on the idler pulley that looked like a shoe and prevented the belt from rising up out of it's groove. They also changed the cooling fan from stamped steel to lighter cast magnesium so quick inertia changes didn't upset the belt so much. Another thing that helped reduce inertial loading was switching from those heavy-arsed generators to conventional alternators.
My 'Vair threw it's belt only once and it was probably my fault for not tensioning it properly. Changing the belt is easy-peasy, especially vs fwd cars.
Yes, there is a Corvair e-fan:
http://www.corvairspecialties.com/streetfankit.html