Rebuilt Blitz Supercharger on Crashy

[CTScott]

After rebuilding a Blitz supercharger, which I picked up due to it having a bad clutch bearing mount, I decided to test it on Crashy before running it on one of my street-able Yaris. The Yaris clutch has a large bearing which rides on the aluminum nose piece of the supercharger. Over tightening the belt eventually causes the bearing to wear and eventually damage that piece. Below is what the piece looks like. The inner race of the bearing slides over the chewed up center piece. The silver electromagnet that surrounds it pulls the outer clutch plate against the inner one. The outer plate is mounted to the end of the shaft and has a spring assembly to keep it away from the inner plate. The inner plate is part of the pulley assembly and spins freely on the bearing. Engaging the clutch pulls the outer one in to allow the belt to spin the supercharger.




It is getting to be very difficult to find parts for the Blitz, so I first looked at having the part custom machined and was looking at $1500. The machine shop thought they may be able to machine it down and sleeve it, but due to the grooves for the split rings, they could not. I decided to experiment with using an industrial metal adhesive to rebuilt the outer nose piece and when I applied the adhesive and slid the bearing on, I engaged the clutch with a bench top power supply to ensure that it was properly centered as the adhesive cured. I installed it on Crashy and will put a few hours of run time on it before I move it over to one of my other Yaris.



Here's a video of it in action:
https://youtu.be/S8DIkeR9Qg0