Putting a Feigao 540 9L back together?
 

The endbells have popped off on my 9L (not a C motor). What would work to "glue" them back in?

Thanks.

Use JB weld instead of glue.

Should work well, but since they have popped off the "joint" has probably weakened, so it would be a good idea to find some way to hold the motor so it won't happen again.

Mine popped off i just super glued it. But while its apart take this oppurtunity to check or replace the bearings with new & better bearings.

ZPB: I would get the RCM heatsink clamp if I were you. There is an L option. Then, just pop it back together, use the clamp, and you won't have any more problems. Just my $0.02...

Like I (tcolesen) said over at RCZ, JB Weld has worked well for me.

BP-Revo, there really isn't any joint to be weakened when the endbell(s) come loose. Simply chipping off the old glue allows the JB Weld to make proper contact, that should last a long time (like it has with the 540C 7XL in my Revo).

Thanks a lot guys:003: .

Use "the force"(of the RC-monster heatsink/clamp)! lol

Brian.. Look at his username.. he is using zpb's avatar.. :p

MM, each time the endbell pops out, I'm sure the metal is stretched or chipped/shaved down.

Its kind of like a push-pin or a tack into a wall. Push it in and pull it out to many times and the fit becomes loose. I know that metal is strong than drywall, but the same concept applies.

Also, since I'm sure the motor didn't come apart perfectly straight, I'm sure even more stress was put on the can where it is clamped.

hmmm, interesting, makes me wonder how many of us actually look at others avatars instead of their name? :032: :005: no hard feeling eh Brian!

Does the end ever pop off of Lehner motors?

the ends of a lehner are treaded into the can, i think.

Lol. Oops! I have an excuse: it was late and I was tired. ;)

lol, good enough for me! I've done it too, heck we've all done it! :027:

The only chipping I have seen is from the glue that holds the motor together. I've had 4 Feigao motors come apart on me, and haven't yet seen any actual damage (like stretching or bending) done to the aluminum. However, a couple of bearings have been destroyed from the angle the motors came apart at.

Do the coils get scratched up or otherwise damaged from the rotor as it comes out?

Yah i can see that as being a major consequence, completely frying your controller.

You mean when the endbell(s) pop(s) off? So far I haven't noticed any scratching of the windings, or difference in performance.

Yeah, that's what I mean. I know when I deliberately pulled off the end cap to clean the bearings on my 10XL, the rotor tried to scrape the coils. There isn't much gap between the coils and the rotor, so I figured that if it popped off in a crash, it would do a decent amount of damage.

Mine haven't popped off, but have loosened unevenly (at an angle other than perpendicular). This is how bearings have been damaged.

When I pull my motors apart, I just try to keep the rotor from sliding on the windings. But even if I couldn't prevent it, I feel safe about it knowing that there is an epoxy-like coating on the windings that should provide some protection.

Actually, yes, the enamel on the wires is actually pretty tough (good wire is, don't know how good the wire the feigao's use), and the epoxy will just add to the strength. It probably does happen though.

Well nothing seems to be damaged in my particular motor and it happend more than once.

I have the motor in an E-savage that I modified a little for track use. I was practicing on a local track that has a nice size double-double rhythm section. I was hitting it perfect every lap and just got over excited and grabbed too much throttle. The truck over-jumped and nosed hard right into the face of the third jump and the motor came apart from the sudden stop. I got the endbell back together and figured I'd take it easy the rest of the day but it popped back off after a few minutes. It runs fine now. I have it together with JB weld for now. I do think the front bearing is a little crunchy though.