Quote:
Originally Posted by JohnnyGrey
Here's an idea...
How about removing the stock tensioner spring and replacing it with a cable or vacuum actuator of some kind? Maybe even an A/C type clutch on the crank pulley. That way you can stop and start your entire accessory chain as needed.
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The A/C clutch has come up a few times, but it's generally discounted because:
1.) It takes energy to make energy
2.) A/C clutches would be oversized, so an underdrive pulley would have to be mounted on the crankshaft
3.) Keeping the alternator the same, but killing the field current scores higher on the cost/benefit ratio.
Putting the A/C clutch on the crank is a novel idea, but my biggest concern would be keeping the oil and coolant pump operational. I also have no idea what kind of torque those clutches can transmit without slipping.
The ultimate would be to lose the accessory belt altogether and just substitute critical components with motor driven ones. Electric coolant pumps, as used on drag cars, are energy intensive, expensive, and generally aren't very reliable...but it could feasibly work.
- LostCause