One way bearing and melting main gear

[Carapau]

I just ordered a one way bearing to fit to a new main gear. After a bit of trouble fitting it I got the heli ready to fly. Half way through my first pack after the fix my heli started making an odd noise so I landed and started to check things over. I noticed that my one way bearing was no longer holding (yes I did install it the right way before anyone asks!). On taking the shaft out all of the bearing rods fell out! Hmmm not sure what caused this but Midland Helicopters, from whom I had ordered the replacement bearing, were excellent. I called them up yesterday and without hesitation they have sent me a new bearing, in fact one better, a new bearing already installed in a main gear, and it arrived today. Excellent service.

On fitting the new gear I notice that the old one was a little melted around the top. Looking at the Blade exploded view I notice there is no washer in this area and so the way I had it set up was correct. Thinking about it I am not sure why there is no washer here as this would prevent the plastic of the main gear rubbing against the plastic of the main frame- perhaps this is what caused the melting? Any ideas anyone?

[Sqwidge]

A dab of grease? I've had a B400 for 2 years now and never had a problem like the one you mention, did you use a proper bearing tool to remove and refit?

[Carapau]

Hmmmm has happened again. Not sure what is happening here. The gear I have been using is one with the bearing pre-installed. It does seem odd that there is no washer to separate the plastic of the gear with the plastic of the frame, this is undoubtedly causing the melting. I just wonder what it is that is preventing the same thing in other peoples' helis. I have double checked the exploded diagram of the Blade and everything is spot on. Perplexed, confused and just a little annoyed hmmm.