@ssspconcepts
Truly amazing performing CRT. I like it. If even their (MGM) highest rated 6s ESC is cogging at start up then it's time to reduce pinion size. But it's always good to know the limit of newly aquired components :smile: Would be interesting to see your highest Watt/Amp peaks. 2.5-3KW seems realistic with this high gearing and 5s Flightpower lipo.

Thanks. I have seen the videos you made...really kick butt! I like how you did the eagletree data insert.

Yeah...this is the 2700kv Neu and I was running the only extra mod 1 pinion I had (18T) with a 46T spur...so the cogging didn't surprise me. What did surprise was that it really didn't cog that bad considering the setup. I'll probably order a 12,13, and 14T set and experiment with those. Any takers on what tooth count the cogging will disappear?

I once attempted to run a Neu 1515 2.5D/F with 3S and 12/46 gearing using a MMax and I basically had to push start the darn thing to get it to go! In fact that is the first setup I had in this CRT...I got tired of messing with the MMax/Neu combo and ordered this the 1.5D/F and 22418 from Mike.

I'll the 14 tooth will eliminate the cogging, but I would like to know your setting on the MGM as well to be completely sure. The Mamba Max has trouble with motor that has a strong magnet connection with the stator. I heard some guys here are having great succes with the Mamba/Neu set up.

I would even think that your ESC should handle a 15 or even a 16T pinion depending on grip with this very high revving motor. On 5s your motor could spin well above 50000rpm. The Neu 1512 i use already reaches 40000rpm and is geared 13/52. I thought this is already crazy.

Think about the torque you will have on tip when you gear it down. Your front (and rear) tires will have a hard time to keep up. Spin city ... Prepare to stock up on tires. But it should be fun to drive it this way :smile:

I used 37 volts with my truck and I blew the diffs. Even if you drop to a 14 tooth pinion, you will still go over 55MPH. That is fast and too fast if you plan on racing. You should try a 4S lipo with the 14 tooth and it should put you right at around 40MPH. I love power and speed, but you will have to stock up on parts for sure.

ssspconcept, did you use the internal controler BEC or you use an external one??

Don't know why, but i don't wnt to take any chance and on my e-revo, i've a MGM 16018 on 4s, and i use an external CCBEC.

I am using the internal BEC...

I don't race....I live in Western-Freaking-Virginia. When I say "RC car" people go "huh wuts dat?" There are two off-road tracks that are around 60 miles away...but I've never checked them out.

That's funny. Try and do what David said and you could also use a receiver pack. I had cogging issue with my BKs and when I used a receiver pack with all of them with BEC disabled, they didn't cog anymore.

Update:

The two 22418 ESC and the Neu 1515/1.5DF motor is at MGM offices right now :smile: and I'm expecting Martin to call me tomorrow after his techs test them and what not ... So I will keep my fingers crossed and hope for the best. I will keep you guys posted

Still, MGM Compro customer service is an A rated :yes:

Update:

I was contacted by Martin and it seems that they could not pinpoint the problem for some reason, but they will send me two new ones instead, to which I’m very appreciative.

Moreover, they did test the NEU Motor with another 22418 and according to him it worked just fine … Now I’m not sure if that was using a 6S LiPo or not, thus I asked him to test it using a 6S LiPo if they did not, before they ship the new ones.

MGM Compro customer service … is AAA (this is according to S&P … hehehe)

Have you ship it yourself directly to MGM, at the adress that apear on the controler manual??

I ask it to you because if i have a problem with mine, i'll did the same thing that your's.

I've bought mine with Mike, but if the service is way fater when we ship it direct, i'll do the same if mine break!

Thank you!

David

Hey aalzuhair remember way back when you posted the setting of your controllers? I noticed that you had free-wheel disabled. I've skimmed through the thread and I haven't seen anyone mention it so I thought I would point that out. If you noticed cogging on deceleration but not acceleration, that is why. The controller brakes very hard as it tries to regulate the speed or the motor. If you were driving at high speed and decelerated enough to engage the "speed brake" the controller may have been overloaded by the sheer number of braking voltage spikes sent back from the motor. Having a slotted stator helps to couple the magnetic field of the rotor into the stator windings and can produce a very powerful current spike. In a nutshell, if you accelerate to a speed in 3s, and then brake to a stop in 1s, the controller sees 3 times as much current during braking as it did accelerating. This could have caused both of your controllers to blow.

Seam to be logic.....:yes:

Yes I did :yes: I got the address from their web site

I did notice some cogging, but I can’t remember if it was on acceleration or deceleration … I can’t remember … At any rate, thanks for the info, I will enable the free-wheel next time :yes:

OK you tell me that the address is on their web site..

Thank you!

well i have sent them multiple emails from 2 different email addresses about my problems and i havent heard back at all !!
maybe someone here could help me. i got a usb com , just wondering if there is led lights that comes on the device? because i cant seem to get that to communicate with any of my 4x mgm esc's or either of my 2 computers

Make sure that you check your Spam/Junk e-mail folder, because I had the same thing happen with me and then I checked my spam folder and there it was :)

You have the batteries connected to the ESC and the ESC is turned on ? Sometimes I need to power the ESC on/off once or twice before the controller program shows the ESC as on-line.


J.

yes i checked in junk mail of both emails , im thinking my emails are going into his junk mail ?

and with the usb com yes ive powered everything up multiple times , tryed reciever packs , power from ubec , everything . ive trying nearly every combo i can think of , and no led lights work and because it doesnt connect with computer the install program cant even complete ! there must be something wrong i have over looked

Update:

Ok I just the two in and I checked one and it was working fun with 3s (de-attached motor and testing both forward and brakes) but I want to try it with 6s but before I do that I want to video tape the settings and the testing with 6s .. because I'm a bit worried to just run 6s :)