The 1512 2.5d motor works nice on 4s. It has a kv of 2000. I have tested it
on 6s as well. It was pretty quick. I ran it on a 80b quark to.

CC Mamba Max is awesome, if it can run 5S..... best price ESC... awesome...

I've been using the 1512 2.5d/f motor in my truggy, and it has plenty of power. If you are trying to save weight, then I don't think you need the 1515 for racing. It will be overkill, imo.

So your saying that my 10XL on 6S LiPo is overkill for racing? :p I think I'm gonna go for the 1512 for several reasons:

A. It's lighter
B. It should be more than enough power for 4S
C. My favorite, its cheaper

I would really love for you to try it on the 5s. I don't have a MM or I would try it.

But.... 4s is plenty if you are building a full on racer. 5s just adds weight and you wont use the extra power.

The I have both the 1515 and 1512, and the 1512 pushes my trucks just as well as the 1515. I can't really tell a differeance in the torque. You cant use all the torque that either one makes. Just get the 1512. Its cheaper, its more than powwerfull enough and its lighter. All good reasons in my book.

The 1512-2d seems like the PERFECT 4s motor.

I run the 1512-2.5d on 5s and its ridiculous. I actually like it much better than the 1515-2.5d I also run on 5s.

The middle comprimise motor would be the 1515-1y. At 2200kv it would be plenty fast for a track on 4s and still able to run at silly speeds on 5s. Thats the Motor mike runs in his emaxx. He runs it on 4s for racing, but I saw him run it on 5s when he was in the area for a trade show and it was amazingly fast.

Thanks for the input! I will probably try it on 5S just for kicks once or twice since I have 2 3S2P 8000mah packs for my BPP LSP. Sombody else is gonna run a MM on 5S as well. I think my mind is made up on the motor. I'm thinking a 1512 with a KV of about 2200 like the 1515/1Y (not sure which one).

4S2P 8000mAh packs are over 1.6 pounds.
5s-6s will run more efficient than 4S with less weight.
I am going to run the Neu 1515 2.5d/F on 6S for racing.
The 1515 may be a bit too much but I like the power :017:

Yea...5S or 6S will be more efficient, but...the weight is a factor. Remember, the batteries are gonna be all on one side with everything but the controller on the other side. With 4S, it would have a better weight distribution.

:027:

A 5S1P 4000mAh pack will give you a better weight distribution than a 4S2P 8000mAh pack. you'd have 3 less cells with the 5S setup.
The question is, will the 5S 4000 mAh pack get you through your Mains. Unfortunately, the only way to tell would be to test it. :030:

I bought TrueRC lipos, they are poor, I got 4000mAh, not sure if the higher capacity use better cells but you get what you pay for. Having to buy MaxAmps.

That's from my experience using them. Dans good though, if somethings wrong he'll help you out to the end, just living in the UK, I don't have the time and money to keep shipping things back and forth, so I just want to move on quickly and get some new cells.

Nick, The trueRc cells are only 10c cells. at 4000mah thats only a 40A cont. 60A burst discharge. Thats not enough. Thats probably why you are having problems. The 8000mah TrueRc packs are fine. 80A continuous and 120A burst is fine.

Starscream, If he goes with the 5s1p pack, he will need much higher quality cells to supply the amps needed. A 4000mah pack would need to be at least 20c cont. 30c burst. to be effective. While they are lighter, they will cost just as much as the 8000mah 10c cells and only give half the run time. Its all a trade off. You are right though... For a pure racer, that may be the better solution, unless he has 20 minute mains to get through.:D

Yeh, well he said they were the same as the Maxamps ones, which led me into buying them. When I found out they weren't after a topic on this forum. Arn't the Maxamps 4000mAh 10c to? Well, 12c I think.

I believe the TrueRC 4000mAh cells were the old cells Maxamps used to use.

Yeah, they are most likely the older Maxamps cells if they were at all the same. Even the old Maxamps 4000mah cells should not have been used in 1p for most purposes.

Racing, being what it is, is not cheap so price is not a factor for me. Since we're specifically talking about racing, weight plays a major factor in the performance of the vehicle so your best over all performance would be achieved by running the lightest and most efficient system. Yes, at 1P you must use 20C Lipo cells. I never stated what C cells to use as I would asume 20C would be used in a 1P application.
I can race 20+ mins on 6S 20C 3200mAh so a 20 min main would not be a concern. I may run into problems though, if the mains were 25+ minutes.
My point being that
4S2P 8000 mAh maxamp pack = 1.6 lbs
my 6S1P 20C 3200 mAh pack = 1.2lbs
a comparable 5S1P 20C 4000 mAh pack ~ 1lb

The key is to determine how long you need to run so that you can adjust your mAh choice accordingly. Why race with more weight if you don't need the mAh...