MMM Mods

[hoovhartid]

Originally Posted by lincpimp

Who farted?

that would be me!

notice my new avatar?
thats my smoked MMM V2 bottle opener.


(no patrick, I didn't REALLY do it. just tryin to get a laugh.)

would it be possible to build up those 4 corners up with something (glueing some plastic or even hot glue ) so the board would sit up further and not wobble ?? and would the case still fit ??...or is it just as easy to cut out the bottom of the case ...thanks for the help

[hoovhartid]

Originally Posted by CRTIM

would it be possible to build up those 4 corners up with something (glueing some plastic or even hot glue ) so the board would sit up further and not wobble ?? and would the case still fit ??...or is it just as easy to cut out the bottom of the case ...thanks for the help

I felt the case was a tight fit with just the foam pad...

...When I first got the replacement ESC, i removed the sticker and took a look inside. When I went to snap the case back together, the bottom seemed to be a bit warped when doing so. ....It kinda fought me. Id get one side lined up, and the other required some persuasion(more than I was comfortable with being such a small board)
It was then that I decided to do the mod.

Once I dremeled out a hole in the bottom, it didnt seem to require any force to get the case closed. It snapped shut like it was meant to.

*edit* to answer your question....I suppose its possible, but I didnt try. I believe less is more (so to speak) in this case

[lincpimp]

Originally Posted by CRTIM

would it be possible to build up those 4 corners up with something (glueing some plastic or even hot glue ) so the board would sit up further and not wobble ?? and would the case still fit ??...or is it just as easy to cut out the bottom of the case ...thanks for the help

I just clearanced the bottom of the case so that the plug would not touch it. Then I made some foam "suspension" pieces for the pcb and put it under the larger wire solder points. So far the fan still works, so I guess the plug is stll intact... I need to pull the esc back out and see how the fan wire is doing. I wonder if it has frayed yet, as it sits between the pcb and the case...

thanks guys for the good info here

[RBMike]

The MMM(v2) that I have with the most hours on it now (of all MMM's I've had) is the one that the fan connector broke off of on the first day I ran it. I took this one home after it broke, removed the fan & broken off connector and replaced the fan with one that plugs into the RX. This one is holding up great. I'm starting to think the the fan connector getting banged on the case & into the brain board may be what is causing some of the BEC's to fail.

[Sneaky Pete]

Originally Posted by RBMike

The MMM(v2) that I have with the most hours on it now (of all MMM's I've had) is the one that the fan connector broke off of on the first day I ran it. I took this one home after it broke, removed the fan & broken off connector and replaced the fan with one that plugs into the RX. This one is holding up great. I'm starting to think the the fan connector getting banged on the case & into the brain board may be what is causing the BEC to fail.

Hey Mike, we were discussing this on Sunday at Bayside, but later last night I was thinking about this...allegedly, there are alot of burnt V2's from right when guys are calibrating or RIGHT when they start running them (slow). That is, they wouldn't have caused any jarring to make the PCB flex causing a broken solder. So, while I do think the plug is a problem, and has perhaps caused problems, there must be another possible cause in addition.

Originally Posted by Sneaky Pete

Hey Mike, we were discussing this on Sunday at Bayside, but later last night I was thinking about this...allegedly, there are alot of burnt V2's from right when guys are calibrating or RIGHT when they start running them (slow). That is, they wouldn't have caused any jarring to make the PCB flex causing a broken solder. So, while I do think the plug is a problem, and has perhaps caused problems, there must be another possible cause in addition.

I modded my case before I powered up my V2, I removed some material from the bottom of the case to make room for the fan connector and I also did a small amount of relief work for the induction coil. Regardless the BEC failed just after calibration with my radio. I beleive the case is a problem and is possibly causing a few malfunctions but believe a more likely explanation would be

A: Faulty parts
B: Assembly fault (my money is on this)

I would think that after all the V1 failures that the CC techs would of gone over the design of the BEC with a fine toothed comb. This leads me to believe that the same problem from the V1's is also effecting the V2's. Is it possible an assembly technique is to blame here?

Has anyone noticed how close the control board is to the back of the FET board? I wonder if when they solder these boards together there is some sort of issue???

Just some observations... I love CC regardless

What are everyone else's theories????

[RBMike]

Originally Posted by Sneaky Pete

Hey Mike, we were discussing this on Sunday at Bayside, but later last night I was thinking about this...allegedly, there are alot of burnt V2's from right when guys are calibrating or RIGHT when they start running them (slow). That is, they wouldn't have caused any jarring to make the PCB flex causing a broken solder. So, while I do think the plug is a problem, and has perhaps caused problems, there must be another possible cause in addition.

Ya Pete, I agree. There is at least 1 more problem that is NOT related to the fan clearance/fan wires/fan connector mechanical problem. Another issue I could see causing problems is the heat sink being to close to the 6.5mm sockets. On one of the Monsters I have the heat sink is so close to the battery sockets that I could barely get a peice of electrical tape between them.