Magnum 91 XL RFS Bearing set
Thousands of customers and manufacturers depend on our bearings to get the job done. When you want the highest quality bearing, look to RcBearings to find the right bearing for your application. We have been handpicking and testing the best bearings for over a decade. We guarantee our bearings with a 30 day money back guarantee.
Complete front and rear bearing set for above listed engine. NOTE that ALL Heli engines should have a plastic retainer rear bearing and ALL SAITO engines should have a sealed front bearing!
All bearings sold from RcBearings are ABEC-3 tolerance class or better!
ASP 91FSR Bearing set
Posted by Unknown on 25th Nov 2015
Bearings appear to be of average quality. The rear main bearing (the big one) is very tight on the inside dimension. I could not trial fit the bearing as the force to insert the shaft was excessive. I have installed the bearings in the case but have not attempted to press the shaft in as I am worried about damage. The original bearing was a snug hand press fit. Evan with the bearing at 270 deg. F and the shaft frozen with freeze spray I could not force it in by hand.
RCBearings: This is common with older engines. Varnish builds up on the crankshaft as the rear bearing inner race wears. This makes it see like the old rear bearing is a looser ft. Clean the crank with some 800 emery paper and the bearing will slide right on.