Has anybody opened a Mamba Maxx motor?
 

I had sand inside my motor and I was going to try to open it up like a Fegao until one of the screw heads broke off so I ended up shaking the sand out. For the future, is it hard to open these motors up?

btw, Seal around the wires if you plan on going in the sand. I ended up damaging my MM controlled and killed a 3s lipo!

Ouch, that hurts.

It should be possible to take them apart (if the screws don't fail..)

I tried taking mine apart before I even ran it. :) I got the screws out ok, but they have it lock-tighted on also and it didn't want to budge. Mine was glued pretty good. So I left it alone. It was brand new after all. :D

One of the screw heads broke off. It's going to require a very small easy out. I wonder if they make them that small? Or, maybe just dill on it a little, I guess. There is still a very small amount of sand still in there that I'm going to need to get out, but on a better note maybe that is why my controller is acting up. It is getting real hot real fast and then shutting down (something has that slight smell of smoked electronics hopefully it was from the fried lipo). I'm going to try it tonight with a different motor.

These motors weren't meant to be rebuildable, according to Shawn Palmer. So if you manage to get sand in the motor, it might be best just to send it back to Castle Creations and have them get it out or just get a replacement.

That sucks...At least it wasn't something like a LMT...

RCCA article has a pic of the inside... don't know if they opened it up or Castle did.

I've opened up my 4600 motor just for the heck of it, but I don't plan on doing it again. If there's ever a problem with one of my motors, I'll just send it to CC.

I tried out my MM esc with a different motor and it works perfectly. So the little bit of sand in the motor is the problem. The Mamba Max controller is amazing.

I got a reply from Castle Creations saying that it would cost about $40 to repair the motor. I like taking things apart I may just go ahead and try myself. MetalMan was it hard to get open? If it's going to get damaged, then I don't know.

The issue of making it so difficult to open the motor to me is kind of a downside. I don't think I have ever had a motor that I haven't had to clean at some point. Even with the best sealing job junk gets in.

the MM motor is like same HIMAX HA36 series i think.

The screws were tough to get out. On my 5700 motor, I didn't actually get it open because one of the screws really didn't want to come out. But after I got the screws out of my 4600, I ended up tapping the endbell off by gently hitting the motor shaft against the workbench.

These motors seem like they are too good of quality to be less expensive/cheap (Chinese?) airplane motors.

I got my motor open tonight. It was very difficult to open by the way. I tried and tried tapping the shaft on a piece of wood and finally I had to put it in a vice put a piece of wood on the shaft and hit a couple times till it popped open. Turns out there was a loose piece of soldier floating around inside the motor. The sand must have knocked it loose.

One thing I noticed when I put the rotor back in the can was that most rotors will pull out of your fingers from the magnetic forces when you try to slide it in. The MM rotor did not pull out of my fingers. It slide in without effort. Now I'm wondering if the motor is somehow demagnatized or is that just the way it's supposed to be?

i think brushless motors use electromagnets and not permanent mags like brushed motors. but im no expert

The rotor uses a permanent magnet. The electromagnet is attached to the can. Pretty much totally reverse from that of a typical brushed motor (that, and no brushes :)).

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