OK,another Coupler question.
Looked at the Lovejoys and have also found the old Chain style. In regards to RPM's , am I basing that on the RPM of the motor itself ? I ask this cause was thinking on the whole "load" issue and that the crank driving the blower seems a rather simple task ( as appose to the coupler driving a transmission or such ) and that the actual load on the coupler would seem minimal.
So trying to figure in all these things,,are they relevant ? or is it just the coupler uint coming unglued cause the motor is turning 6-7000 RPM's ?
If it were me I would go with what is proven. Which is the chain coupler. My Brother had a Lovejoy coupling on a hydraulic pump on his D-2 Caterpillar, it worked OK but chewed up the star shaped dampeners for some reason. If you want to experiment go with the Lovejoy, if you just want to put it together and forget it go with the chain coupler. JMO.
Tom, Sounds like your brother might have had a bad coupler. We used a Lovejoy to connect the alternator to the back of the water pump on an Indy Car engine and spun the engine to 13,000 rpm hitting the rev limiter on and off for 4 hours and had no problems. But you are correct the chain is the proven path. You might even want to look into a belt set up. What ever you choose do some research and have fun with it.
I run mechanical fuel injection with my Procharger on the GMC and use a Hilborn boost compensator valve that richens and leans the engine under boost. It was originally developed for the Indy cars on turbos with mechanical injection. Tony
Picture form Hilborn Site: