presso

I have just replaced the rear bearing in my 46ax after approx 40 flights on my trainer of 10-15 min per flight.When i fitted the new bearing i noticed there was some very very slight scuffing on the inside of the backplate.I have done 1 hours flying after the repairs and have now removed the back plate to make sure things are ok,the scuffing seems to have increased now,the oil discharge was nearly clear after running.My question is how long should the bearings last under normal operating conditions and should there be any marking of the backplate under normal operating conditions.

Bax

My Feedback: (11)

Some swirl marks on the rear cover are normal. That's because the connecting rod will 'float' on the crankpin. As long as they are slight polishing marks, you'll be OK.

presso

Thats good news,do you know if higher quality bearings are available for the 46ax either after market or genuine.Many thanks.

Bax

My Feedback: (11)

"Higher quality" bearings would be somebody's opinion. You can certainly pay more, but you'd not necessarily get better performance from them. We've always had great success with the stock ones.