The 2-inch wide Hy-Vo chain is rated at 20,000 lbs of tension load (torque plus centrifugal force). I've done the calculations for a 400 hp engine with 600 ftlbs of torque running at 5200 rpm and the actual tension is around 4,000 lbs. Derating the Hy-Vo chain by 80% (for engine torque pulses) increases the load to 7200 lbs of tension, which is only 36% of the capacity of the chain. The webpage: "HyVo Chain Drive Design Issues, by EPI Inc." describes this in more detail although the author does not back-up his conclusions with any real calculations. I'm working on a paper that will show that a Geschwender designed drive should handle 600 hp @ 5300 rpm with a considerable safety margin.Hello, Leo
I have a Geschwender PRSU and am wondering what the horsepower rating might be. This is one of the units for the Ford 400 motor. If you have any drawings or other detailed information I would be happy to pay you a consulting fee! Thanks.
BTW: I've already placed an ad in Sport Aviation (October edition) requesting information on the durability of the Geschwender drives from anyone using them in their aircraft. If interested in participating, I can be reached at: [email protected]