the astro spat a magnet

[Catman]

the astro spat a magnet when it got real hot :( ive since epoxied it back in with this hi temp epoxy i used to repair the exhaust of my enduro kdx 200 ( if you got a hole in the exhaust in an enduro chances of setting fire to something is quite likely )

i put it in there and wedged it with balsa til the epoxy set seems to hold mint, only thing is ive found another problem - Bent Armature :( how do i get this straightened? in a lathe? do i take it to an armature rewinder? - i suspected the arm was bent

[Catman]

1 can the magnet on the left of the gap is the one i refixed

[AndyKunz]

Shafts can be straightened but man is it a pain. I would get a new armature myself.

Andy

[Catman]

Doh, i was hoping it could be straightened, the motor is old and only cost me 30$ so it wouldn't be worth buying a new arm, id be better spending my money on a brushless... Doh :(

[JimClark]

Not sure what motor this is but I have a 4 turn arm from an Astro 25 that is still good and you can have for the cost of postage.
Jim Clark

[Catman]

thanks so much jim, but i dont think it , its an 035 will fit its according to the measurements, its smaller than an 25

[n.h.schmidt]

Hi Catman

You don't know me from nothing but many others do on this board. I would give it a go on straightning the motor shaft. It may never be exactly like it was but could be made to still work very well. I do lots of motor work on my own motors and for some friends,when they need some help. What have you got to lose? n.h.schmidt

[Catman]

yeah good point, spose i might as well give it a go, i mean , its bent but it still runs, just would run better if it was straigher, can anyone recommend a method for straightening it ?

[T4r3e2y1]

You could use either a prop balancer, or some sort of homememade V blocks...in order to rest the two ends of the shaft on, rotate it till you find the direction of the bend, then turn the bend so the arch is upright, and push down slightly or maybe even tap it witha rubber mallet. The reason I'm saying push or tap it is mainly because I have no clue on how hard the shafts are. I used to do real outboard boat motor work, and we'd use the same technique, only using a hydraulic press to do the pushing or taping. No way to do it will be fool proof, when we did it with the real prop shafts it was hit or miss, I'd say you could get 75% of the few we tried back to usable condition, the rest would vibrate like hell, and ruin seals and bearing the first trip out, and that was even after checking for straightness using a dial indicator. Give it a shot, maybe someone else has a better idea for the small stuff.

Good luck