A poll on Monster failures and non-failures

[jhautz]

Originally Posted by BrianG

Do you know if Castle uses the same thermal epoxy on the MMM that they do on the MM? The MM stuff is pretty easy to remove. I want to simply replace the existing HS for a taller one and cut away the top of the case to allow more unrestricted airflow.

I asked Joe at CC for a replacement top case so I could mod it for better natural airflow over the heatsink so I dont need the fan. He told me not to do it cuz the esc will fail. Seems like a company line to me cuz I think it should handle it if I could run my MM without a fan on the same setup. but, thats what he told me.
But at this point I'm not willing to void my warantee untill they get all the bugs worked out of this stuff. You just never know when it will need to go in for service and the hacked up case would pobably be a big red flag.

Originally Posted by rabosi

Wouldn't the 25mm fan fit in the stock fans spot?

No. The 30mm fan is only 7mm thick and the 25mm fan is 10mm thick. The case wont close with the 10mm thick fan inside.


EDIT: Another note, the case itself seems to be another weak point IMO. I have opened one of them a few times now to replace fans and check thing out etc... and the littel clips that hold it closed are already startign to not hold so well any more. If I have to replace the factory fan every 2 hours of run time those little clips that hold i closed are never gonna last. I already have a zip tie wrapped around it to hold it all togheter and make sure the top doensnt pop in some sort of crash on the track.

[BrianG]

Originally Posted by jhautz

I asked Joe at CC for a replacement top case so I could mod it for better natural airflow over the heatsink so I dont need the fan. He told me not to do it cuz the esc will fail. Seems like a company line to me cuz I think it should handle it if I could run my MM without a fan on the same setup. but, thats what he told me.

Yeah, sounds like a line to me too. A taller heatsink with less casing around it would be almost as good as an enlosed design with a fan (if placed right). Would also allow easier temp readings.

If the ESC "will fail" without the fan, I don't want it. So, for those who have already had fan failures, how many of those ESC failed?

[Sower]

Originally Posted by jhautz

2 MMMs. 2 dead fans. So far batting 1000. Both have less than a couple hours of run time.

Here is my solution. See picture below.

I'm pulling the dead fan and strapping a 25mm fan to the top over the fan hole and letting it blow into the case. The 25mm fans I was using on the MM and R1Pro are much more robust. I wish I could remember where I got them. I bought a lot of 10 for a good price like a year ago adn now I cant remember where I got them. Anyway, the 25mm fan moves more air than the 30mm fan that came with it. I can feel stronger air flow comming out the side vents of the MMM than with the stock 30mm fan.

Not pretty, but it works.

jhautz - dude, I love the new look . . . it's like the Abe Lincoln of ESC's!

Good solution though. And I would have to agree with Brian's direction about the poll. More options would be nice, but I guess it still accomplishes the goal - people talking about it.

My failure wasn't due to anything like the BEC or the fan - it was because my casing came apart every time I wrecked and eventually a wire separated from the board. So I would agree with the comments on the casing. I think it needs a revision. I would love to see it be basically like the old Mamba Max with the solid casing at the bottom and the exposed heat sink. Or something like the MGM which allowed you to secure the whole unit with threaded holes at the heat sink. I loved that setup.

[BrianG]

The new fan looks like it might be a hair too thick and it's not the same dimensions, so the little snap-in posts won't work.

[MTBikerTim]

I am surprised the fans fail so easily. First run my fan got a stick stuck in it for maybe a minute or so. I pulled it out and the fan started back up no problems.

[DRIFT_BUGGY]

Mine is a non-failure because it is still sitting in the box waiting for other parts to arrive to get the buggy all up and going

[Happywing]

It's looking like about a 30% failure rate. That sounds about right based on conversations I've had with fellow RCer's.

mine is work on 4s. If i change to 5s or 6s, my mmm can will go on? Have anyone try 4s, 5s,and 6s on the same MMM ESC?

[killjoyken]

That's why I started this poll. I know about the faulty BEC component in some Monsters but I was curious if it had anything to do with the amount of voltage being run. I've got a Neu motor coming soon so I'll be able to test one of my Monsters on both 4s and 6s next week.

[phatmonk]

Do I get to vote twice since I have had both of mine die

[ncnguyen123]

ran my MMM 3 times (20 mins each) so far on 5s and 6s. so far so good. mine came from the first batch also.

[e-mike]

phatmonk write: BOTH OF MINE DIE..TWO mmm down

i run mine on 4 cell..it goes good,,i really test the esc,,,,non stop running for 10 minutes full trottle to full brake....esc never get over 82f

im afraid to try on 6cell

i by from mike (first batch)

Mine's running fine on 5s A123s. Only put about 5 packs through it tho, so time will tell I guess.

[sleebus.jones]

Update: ESC is fine, fan failed sometime during the last run. Took the case apart, confirmed it's still plugged in. It's dead, Jim.

[Rcaddict]

I got three 10 minutes runs and all is well. I did lose 2 teeth on the fan already, but it's still blowing.