POP! goes my Mamba Max...

[BP-Revo]

Well, I have no idea WHY it happened, but my Mamba Max is fried...

I hit the track today, and about 15 minutes into my first run, after landing a jump and spinning out, when I went to start, it cogged like crazy...

I thought maybe something was jamming the driveline, maybe the mesh got messed up...so I took it back to the work bench. Everything seemed fine, so I turned it back on, gave it a bit of a test rev, and it seemed to work fine. I walked it back out on the track, put it down, and went to drive to the side so no one would hit it while lapping (while I climbed up to the driver stand) and it just gave a fit of cogging and went nowhere. Took it back to the bench again and now I can't even get the motor to spool...

Anyone have any idea whats wrong? Maybe its NOT the Mamba Max but something else? Its my only ESC for now, so I can't actively test, but I really can't see it being anything else. The fact that it spooled up fine for a bit showed the motor was OK,and, being a Lehner, I give it a low probability of having any problems.

So...10 dollar practice fee for a mere 15 minutes of driving (and that track happens to be closing at the end of this week, so my last time there I get stuck with a broken truck).

Take your speedo and plug it into your g2r's LMT

and then you will know if its the motor or speedo....

That stinks!

[mwry13]

I poped mine too at the Kyosho Race a week ago... literally

I was running 2nd in the bump up spot to the Expert B main and all of a sudden when i came off a triple at Revelation, my car started to cog bad... after a brief attempt to "fix" the problem i ran off the stand to find that my Mamba Board poped out of the case ( the damn servo tape didnt give ) and was banging around the car for who knows how long...

After i practically got out a microscope to find out what broke... a small yellow Piece broke off the bottom of the board ( i dont know what its exactly called )

funny huh? a piece the size of a grain of rice ended my day early.

[jnev]

Don't know what the problem could be... but SoCal Raceway is closing?? That stinks!! Do you know why?? I always went there whenever I went to Orange County to visit relatives.....

[BP-Revo]

I dunno exactly why - they were meant to close sometime in like August but they ended up getting a bit of an extension on their lease...

Not this time I guess. I'm going to hook up the motor to my 1940, I was planning on it - just didn't feel like dealing with it right at this moment. I'm 99% sure its the speedo though.

mwry - did Castle warranty your MM?

[MetalMan]

Originally Posted by jnev

Don't know what the problem could be... but SoCal Raceway is closing?? That stinks!! Do you know why?? I always went there whenever I went to Orange County to visit relatives.....

They can't pay the ever-increasing lease, and so the owners of the building/property have been waiting for a new business that CAN pay the lease to take SoCal's place. The new business is going to be a preschool... Which I and many others agree won't work out too well, considering there is a Pepboys right next door. IMO, little kids and mechanics/machines won't mix.

However, there is supposed to be a place in Long Beach with like 3 tracks that is either already open or will be opening very soon.

Over the phone I suggested for BP-Revo to check the solder joints on the motor connections. If he can't find anything there, then he can try out the motor with a brand new Mamba Max that I'm going to sell him.

[BP-Revo]

I sort of checked all my solder joints at the track and they seemed fine...I guess I'll check again. I'll try it on my G2R now and see how it is...

[nl12]

I would check to make sure none of the phases on the motor are shorted

[aqwut]

if it runs find with no load.. it could be the caps.. that happened to mine.. all my capps were pooped.... the same thing happened to my Cheap OEMRC ESC.. just replaced the caps.. and it's good... Well, Good luck to ya buddy...

[glassdoctor]

I had one do this once... and it was toast. Mine would not even run a MM motor.

[MetalMan]

Hey Mike, it's looking like that MM ESC is going to show up today .

[BP-Revo]

Sweet! Looks like I'll be up and running way faster than I thought (I still haven't had a chance to test the other motor to make sure it is indeed the ESC, I'll probably do that this weekend - its going to be a busy one for me for sure).

[crazyjr]

Have you checked that the motor hasn't shorted? I had one short two phases and all it did was cogg and not move. there will be resistance only in certian places ( feel like maybe a bad bearing or mis aligned)

[BP-Revo]

Well, I just tested it in my G2R. Solder connections are fine as well. It still cogs. MetalMan guessed fried phase from the evidence, and I agree...there's really no other explanation.

I went and got his spare MM from him, so I'll solder that up when I have a chance. I'm going to big bear on Sunday to film something for my Video Production class, and I think I'm gonna bring my CRT to do a bit of snow running.

The LMT is the problem? lol the phase thing is confusing me lol.......

That stinks