Lynn,

If an extra wheel was run off the alternator or water pump pulley what
would happen if the belt slipped?

Bobby

If the belt slipped?

 

It's a toothed belt. !/2" pitch 1 inch wide. Or, whatever you want. At one inch it's the same belt as most cam drive sets found on modern engines. Replaced at about 80,000 miles in a more stressful situation. How many cam belts have you lost? I never lost one in 10 years of racing Fiats.

 

Anyway, it would loose any timing feature you were running off of it. One tooth and the engine would loose some power. Two teeth and way more power. Three teeth and it would probably shut down. We used a 1/2" by 1/2 inch pitch to run the water pump. Never lost a belt. But this is a backup source for injection timing, right. It's a never need it unless hell freezes over but you can still keep going if you need it. We had Cosworth engines that ran the injection pumps and the injection distributor block with 3/8" by 1/4" pitch belts. Never a problem.

 

Some older race engine ran the high voltage distributor with a belt from a cam pulley. 

 

So, you could have two complete systems using the "A" and "B" controllers with two triggering sources.  

 

 

Lynn E. Hanover