MMM Mods - Page 5 - RC-Monster Forums

tc3_racer_001 · 09.23.2008, 11:56 PM

thus voiding the warranty. ill just leave it be, and if it fails -its castles fault!!! but with them touching (look down the bottom, its almost glued to the heatsink...?)

u could always just cut the fin/s off?

BrianG · 09.24.2008, 12:09 AM

Well yeah, but I didn't realize the warranty was a factor.

And I think cutting the fins would void it as well.

tc3_racer_001 · 09.24.2008, 12:30 AM

not as bad

but until castle figures out everything eslse and we see the new case design these are here to stay imo.

DRIFT_BUGGY · 09.24.2008, 01:34 AM

Would heat shrink work?

joeling · 09.24.2008, 02:28 AM

After this potential problem was pointed out in this forum, that's what i did. However, some of the posts were so close to the heatsink that I had difficulty to insert the shrink. In addition, the shrink also interfered with the case. Had a difficult time putting back the case.

I'll try to put up a pic later for more clarity.

Quote:

Originally Posted by DRIFT_BUGGY

Would heat shrink work?

Regards,
Joe Ling

Maciolus · **Novak Glitch Buster Capacitor -** 09.26.2008, 03:54 AM

Do you think Novak Glitch Buster Capacitor will reduce possibility of failure?

It is supposed to "store power from the Battery Eliminator Circuitry (BEC) and act as a filter to eliminate noises generated by servos" and "reduce load on BEC".

Do you know parameters of that capacitor?

BrianG · 09.26.2008, 09:50 AM

Quote:

Originally Posted by Maciolus

Do you think Novak Glitch Buster Capacitor will reduce possibility of failure?

It is supposed to "store power from the Battery Eliminator Circuitry (BEC) and act as a filter to eliminate noises generated by servos" and "reduce load on BEC".

Do you know parameters of that capacitor?

Depends on what is causing the failure. If it's simply amperage load, then no, it won't help. If it has something to do with filtering, then maybe. If the issue is with a bad BEC component, then no.

A cap inherently stores a charge and filters out AC. So, it provides a "reservior" of sorts that will help with current draw when servos need more peak currents. However, if the load requires a constant high current, a cap won't help much at all. It also helps get rid of noise that may be present on the BEC output. However, if the noise is getting in elsewhere (antenna, throttle/steering signal line, etc), it will not help.

Don't know the parameters of that cap, but $13 plus whatever the shipping costs are is a bit overpriced IMO. Just go to RadioShack and pick up a 1000uF (or higher) 10v (or higher) capacitor and solder a servo lead to it.

jhautz · 09.26.2008, 09:59 AM

Here is another option. Marketed for a different reason, but essentially the same thing. A capacitor on a rx plug. less than $5 too.

http://www.amainhobbies.com/product_...oducts_id/6570

Maciolus · 09.26.2008, 10:14 AM

I have just bought 6,3V 1000uF cap. Unfortunately not SLR.

I hope that simple (13 cents value) mod will lower possibilty of failure. Keep your fingers crossed tomorrow :)

Base of heat sink in my MMM V2 is touching battery connectors :/ I hope little silicone will prewent short-circuit.

Maciolus · 09.28.2008, 01:22 AM

I hope I am in happy 50% of MMM owners ;) It works, with some mods, after at least an hour racing. Peak power with Medusa 60-1600 on 6S A123 was 1807W :)

hoovhartid · 09.30.2008, 02:23 AM

well, after my case mods and adding shrink around the bullets, as well as using a UBEC...it didnt matter.
My 2nd MMM v2 took a dump. :(

I'm gonna roll the dice on a MM with a BEC and a fan.

DRIFT_BUGGY · 09.30.2008, 03:55 AM

Quote:

Originally Posted by hoovhartid

well, after my case mods and adding shrink around the bullets, as well as using a UBEC...it didnt matter.
My 2nd MMM v2 took a dump. :(

I'm gonna roll the dice on a MM with a BEC and a fan.

Unlucky, haven't heard of to many going up in smoke using a ext. bec

George16 · 09.30.2008, 06:01 AM

Quote:

Originally Posted by hoovhartid

well, after my case mods and adding shrink around the bullets, as well as using a UBEC...it didnt matter.
My 2nd MMM v2 took a dump. :(

I'm gonna roll the dice on a MM with a BEC and a fan.

I think your's is the first to take a dump using a UBEC.

RBMike · 09.30.2008, 10:57 AM

No he's not

hoovhartid · 09.30.2008, 01:52 PM

Quote:

Originally Posted by DRIFT_BUGGY

Unlucky, haven't heard of to many going up in smoke using a ext. bec

It didnt smoke actually.

It just stopped. It was running, then it wasnt. I thought I was seconds away from seing casper so I stopped pulling the trigger.
I took the lid off the truck and she was just sitting there.
Checked all my wires and connections, plugged in the castle-link and nothing. she was completely dead.