SUPERSPORT

I have two OS 46FX crankcases. One was in a crash that broke the carb off so the case is trash. The other is from a lost plane that was in a cornfield for 4 months. The bearings are rusted solid.

I wanted to take the bearings out of the bad case and replace the rusted ones in the good case.

Anyone ever do it? Anyone know how to do it?

liquid_TR

Soap wash it, dry it, spray WD40 or penetrating oil all inside, flush & clean with alcohol, heat the crank case with a big torch near the rear bearing line from outside, tap it hard on a woodblock untill bearing falls out. Same for the front bearing line, use a drift from inside to push it out.

Once bearings are out, re-clean the case, shine it up inside on bearing seats with a dremel tool using a buffing wheel head and some polishing compound. Heat up the case, put the new bearings in. voila..

XJet

[link=http://www.rcmodelreviews.com/bearings.shtml]This page and videos[/link] should tell you all you need to know and show you how it's done.

SUPERSPORT

Thanks guys.

I thought about doing it in the oven before because I didn't know if that little torch was enough. Looks like they both work.

I just went out and used the torch on the rusted bearings. Came right out.

Guess it was all for nothing. The rusted ones are in a 46FXi. Looking on Tower Hobbies the 46FX and 46FXi sizes are not the same. They are $55. Anyone know of a cheaper option?

ETA: [link=http://www.rc-bearings.com/]rc-bearings.com[/link]
Found in the how to link. $6.97, now that's more like it.

XJet

Glad you found the info useful.