Size motors to use with MMP - RC-Monster Forums

J57ltr · **Size motors to use with MMP -** 11.15.2009, 10:12 PM

I have been reading around and noticed that it was mentioned that the MMM’s warranty would be void if the motor used was less that 70mm in length for a 36mm diameter motor. I guess the same would be true if a 2200 or the 2650 was used with the MMP? What are the recommended motors for use with the MMP and 6S? I don’t think any of the current available CM-36 motors (4600Kv-9000Kv) would be a good choice to use with 6S.

Jeff

HomeGrown · 11.15.2009, 10:24 PM

wat are u running it in?.. some of the CC motors will not even let u run 6s.. my 7700 sure dont.. its 2s maxx!..

11.15.2009, 10:34 PM

i think your looking for around 1600-1800kv motors for 6s

J57ltr · 11.15.2009, 11:24 PM

I am really looking for what is the largest (physical size) that should be used with the MMP in any application that it is designed for. It seems that most 540 sized motors are good for about 500-600W and the MMP is capable of about 1700W. I know that a motor the size of the ones used for the MMM are too large and would draw too much current for the MMP, so what are the appropriate sized motors to use?

Jeff

J57ltr · 11.18.2009, 01:09 AM

Anybody have an answer for this?

Jeff

BrianG · 11.18.2009, 01:36 AM

I could be wrong here, but I believe CC's recommendation for X size motor is basically just to provide a basic guideline for noobs. Of course, any motor can be the wrong size depending on how it is used, gearing, etc. It basically prevents people running the CC5700 motor in a heavy MT.

As long as the current and voltage are at or under the ESC's capability (6s and ~80A), there really is no limit. Choose a proper size motor for the job with the right kv for the voltage used, gear appropriately, and there won't be any problems.

Unsullied_Spy · 11.18.2009, 02:25 AM

Quote:

Originally Posted by BrianG

I could be wrong here, but I believe CC's recommendation for X size motor is basically just to provide a basic guideline for noobs. Of course, any motor can be the wrong size depending on how it is used, gearing, etc. It basically prevents people running the CC5700 motor in a heavy MT.

As long as the current and voltage are at or under the ESC's capability (6s and ~80A), there really is no limit. Choose a proper size motor for the job with the right kv for the voltage used, gear appropriately, and there won't be any problems.

+1, I could run my MMM in my Mini E-Revo and there's no chance in hell they could deny a warranty claim

There was somebody in one of the MMP threads that posted about running a race with the 2200 and a MMP and Patrick congratulated him (I think he did well in a race). Keep the amp draw down and you have nothing to worry about.

What are you planning to put this in and how fast do you want it to go?

J57ltr · 11.18.2009, 08:49 PM

I have wanted to build a high speed car for a while now and am debating if I should get the MMP or MMM. I have a Lightning 10 buggy, that I think would do a pretty good job, but I don't think I can get the MMM under the body but the MMP seems to be a good fit, I think the current is a little on the low side, but the 6S capability would make up for it.

I have run as high as 4S A123 on the MM and it does pretty well, but I have to use a UBEC since it seems to shut off for a few seconds (does the same on 12S Nimh also) so I think the BEC is shutting off. On 4S it really screams but I saw a few peaks of 178 amps (kinda high), but it keeps rocking and rolling.

It would seem to me if you used a 2200 on 6S or a mini erevo motor on 6S it would kill the MMP for sure. Patrick mentioned in one thread that the 2200 could draw in excess of 2K amps and in another thread that they would not warranty a MMM used on a motor less than 70mm long. I cant find the thread for the 70mm statment, but it made since to me at the time. I looked most of the evening yesterday but Patrick posts a lot and I get side tracked easily.

Jeff

11.18.2009, 11:01 PM

Quote:

Originally Posted by Unsullied_Spy

+1, I could run my MMM in my Mini E-Revo and there's no chance in hell they could deny a warranty claim

There was somebody in one of the MMP threads that posted about running a race with the 2200 and a MMP and Patrick congratulated him (I think he did well in a race). Keep the amp draw down and you have nothing to worry about.

What are you planning to put this in and how fast do you want it to go?

yea i run my castle 2200kv on my mmp in my d8e runs great !

J57ltr · 11.18.2009, 11:08 PM

on 6S?

11.19.2009, 07:38 AM

no on 4s

Riko · 11.19.2009, 09:08 AM

About the MMM and the MMP I also was wondering if it is possible to swap the motors used for 1 ESC to use it on the other ESC?

for instance the 2200KV motor used in the MMM, can easily be used with the MMP ESC with 5s?

if that is all easy to swap, why would Castle than market it in such a way that MMM can only be used with 1/8 and MMP only with 1/10? :)

Riko · 11.19.2009, 09:23 AM

hm,

I see that the MMP uses 4mm bullet connectors wich goes up to 75A
and the MMM uses 6mm bullet connectors wich goes up to 200A

so I guess that has somewhat a influence on the relation ESC - motor?

jhautz · 11.19.2009, 10:21 AM

Connectors can be changed. All you need is a soldering iron. Heck... You don't even need to use connectors if you direct solder. Not sure what your question is?

All CC is trying to say is don't overload the esc. They can both run a 1/8 buggy or as large of a motor as you want. It's just the amount of load you are putting on it. Lots of factors go into figuring out what the load is/will be. If you don't understand I would reccomend just getting the MMM if your car is a 1/8 and getting the MMP if it's 1/10. That's why castle speced them that way.

Riko · 11.19.2009, 10:41 AM

okay thx