sure... here is a picture of my simple one piece drop in solution for running 1/8 brushless:sarcastic:

http://i66.photobucket.com/albums/h2...M/CIMG3454.jpg

I think I have as much time in putting this together as the last buggy kit I put together.

Mods (all within warranty I hope) : Fan hole cut out in case, case bottom has hole cut so the fan plug and coil dont hit, extra thick foam servo tape on the bottom to help cushion it from shock, external BEC wired on, extra 2200mfd cap added.

I havent even plugged this on in yet. I will run the last V1 I have until it fails and then put this in. If this one fails I am giving up on the MMM. There is nothing left to do to it within warranty.

It looks like FrankenESC....:tongue:

well when i get moine back when it blow s up i hope your ready to mod it like that one

I would have to admit that the caps the castle uses are undersized. Novak uses fair sized capacitors on all their escs. I'm not saying it wasn't an MMM related problem that caused the failure, but if you think about it, even though the truerc packs may be true 15c packs, thats still only 75 amps continuous. Castle claimed they saw 800 amp spikes in their setups during prototyping and that was probably with a 1y which is even lighter than a 1.5D. From my experience, I noticed a huge gain in peformance when going from 20c 5000 mah maxamps packs to neuenergy 30c 4100 packs. My novak hv4.5 turned into a completely different motor. It suddenly had more punch than my 8xl did and i could gear down 2 teeth on the pinion gear without sacraficing any top speed. Before I made the change, I totally judged the motor based on peformance since the packs were barely getting warm. Once one of the cells puffed, and then two more while the rest of the pack was sitting on the shelf, I soon realized that batteries are a HUGE factor in determining performance. This was only in a 7lb 8ight, so think of how much of a difference there would be in a monster truck that requires even more power for even higher speeds, with say 125 packs verses 75 amp packs.

SpeedyBL, You are right. Batteries do make a big difference. I had a setup on an 11.1V lipo and the wattmeter measured 10v dip on an 11.1v lipo. I tried a better battery and the wattmeter measured 10.5V dip. The total power difference ended up being 100watts. It was something like 550w vs 650w just from a different battery at the same voltage. I can only imagine if I had one of the neu packs, I could have picked up another 100w of power.

Jhautz, You should see the mtroniks truck esc. You have diodes and a cap all on top of the esc. Looks sort of like your creation. I like it though.

SpeedyBL, Thats a good point on the battery limitations. Even though the truerc packs are great cells, they are only rated for 75amps. Maybe as the pack drained a bit the cells had trouble keeping up wih the peaks and were no longer sufficient for this setup. I dont think truerc posts a peak for those cells either, but I think we can all agree that they would have exceeded what the pack could produce. Even their 10C 5000mah packs though outperform my 20 5000mah packs that I bought from another manufacture, but ya in this case it might have been asking a bit much.

Good info.. Thanks. Learn a little more each day.. with hopefully less fire! :)

At least its all covered under warranty and you can get another one. Keep in mind that for every mph you try to go over 30 the running amps and peak amps go up by a lot. It just like with horsepower, with 200hp you can go 200mph, but with 1500hp you can only go 300mph. It takes much more power to go only a little faster. With these 60mph setups you need some serious battery power. Going from a setup rated for 4S to 6S to try out speeds is a good idea if you provide twice the battery capacity and power at 6S. I dont think our battery trays are big enough for something like this and the high end batteries are just way expensive.
I think the reason Novak has such success is because they package the motor and the esc together and you really cant change much and they dont have many motor options. With this sensorless stuff, the possibilities are endless and there are some amp hog motors out there that could cause some trouble.

what i dont get is why are alot of people haveing problems with the mmm useing the say set ups that worked well on the mm with a fan and some caps?

A MM with a 1515 1.5d on 6s would have smoked... Too much voltage. Looking at the specs, and other various info the MMM does not appear to be much higher in amp handling than the MM, it can just handle more voltage.

Not so sure about that I think that the ratings on http://www.castlespecialprojects.com...ntrollers.html would be pretty accurate.

Hobby rating for MM is 70amps and MMM 120amps - A significant difference.

I will be running my 1.5d on 4's with 22/58 gearing in my erevo with my mm untill lutach gets his esc's shipped..using 2/truerc 15c 8000mah 2s and 2/ flightpower 25c 5000 mah 2s ...no extra caps on my mm thought...should I add 1 more big one?...if so what cap?



I'm never selling my two mm's..there just too good a backup esc to get rid of

4s you can use the novak or other 25v 2700uf low esr or the digikey 2200uf 35v ones jeff linked

I had never seen those ratings. Thats great that they have those. A lot of controllers on the market are overrated so its good to see solid numbers. 99% of the MMM failures are the BEC issue. If you counted only the controller failures without the BEC I think you would have a successful product with a very low failure rate. In my opinion they just have to get the BEC issues figured out and they will have an outstanding product. The controllers themselves are incredible once you get them working right.

Run the MM without the BEC and you would be having a lot of failures as well.