Originally Posted by A727Tflite
Originally Posted by dvw
No need for 4 pin planets. The weak link in the planet assemblys are the splines in the aluminum front cattier. With big enough power they will eventually strip where they fit on the output shaft. I've never seen a plantertary pinion break. Only a very few planetary needle bearing failures. There are early and late rear drums. Some use the thin thrust washer and some don't. Make sure the center thickness matches. If only that band surface is poor you can trim them in a lathe. Many times crocus cloth will clean them up..
Doug


Hey Doug, I think you meant to say the rear annulus - early and late. The rear drum never had a thrust washer. It semi-floats. Can’t go rearward because of the ORC race and can only float forward a bit and gets stopped by the rear planetary tangs and a step in the drum.


You are correct about the annulus. Last year I had a rear drum that was different. Don't know what it was out of. But it didn't fit. It had a thicker cross section in the center. it bound up the rear assy when installed.
Doug