brushless help for kuwait weather - RC-Monster Forums

q8-maxx · 01:24 PM

hello,

need help for chosing E-maxx brushless setup :)

our weather in summer is 40-50 C (104-122 F) so i need brushless setup that can work with this weather. thanks

Serum · 02.01.2007, 07:12 AM

Hi Q8! If you want a setup that doesn´t thermal on you; get a mamba-maxx controller, 4S lipo´s (such as the maxamps 8000mAh packs) a Lehner 1940 motor with a 2000kv would do very nice.

q8-maxx · 11:06 AM

thanks but need speed too
i wish to make my maxx hit 45-50 mph

btw we can not order lipo's it not allowed

Procharged5.0 · 02.01.2007, 12:16 PM

How about a pack of Ice on top of the esc & motor!

WOW 104-122! That's seriously hot!

BTW.....are you with the Armed Forces?

and last but not least.............Welcome to the RC-Monster forums!

q8-maxx · 02.01.2007, 12:29 PM

lol we don't have ice

sure i am not with Armed Forces :)

Procharged5.0 · 02.01.2007, 12:34 PM

Quote:

Originally Posted by q8-maxx

lol we don't have ice

sure i am not with Armed Forces :)

Just curious.

Regardless of the ESC of choice. Use a fan!

An efficient motor such as the Lehner is a must.

A 1940/7 with a Mamba Max and 4S is one good combo. A Quark (with heatsink & fans), Lehner 1940/7 or NEU1515/1Y and 4S or 5S would be the next step up. Use a UBEC with any and all of the combos.

neweuser · 01:52 PM

Welcome!
In those kind of temps, I would not suggest a Quark at all. MM would be good with a Lehner 1940. But if you are looking at 45-50's, then a 1950, but not sure if the mm can do that motor.

Also guys, he said no Lipo allowed....that must suck!

Procharged5.0 · 02.01.2007, 01:58 PM

For those speeds and given the current draw of the 1950's i say probably not.

Dafni · 02.01.2007, 02:00 PM

If the MM can take the XL motors, why shouldn't it work with the 1950s?
Amp draw is about the same, with extra efficiency.

neweuser · 02.01.2007, 02:00 PM

That was my thinking. In those kind of temps, a Quark would be hard to keep cool IMO. I have enough of a hard time in 95 degree F weather! But for the speeds he wants, not sure how he would do it. He could go, lehner 1950/Qaurk 125b or MM on 18 cells maybe....not sure with NiMh to get to 45-50...he cannot get lipo I guess.

Procharged5.0 · 02:05 PM

Daf,

The MM would absolutely run the 1950 on 4s. I have no doubt. I almost bought the 1950/7 and opted for the NEU1515 at the last minute.

I was thinking he'd be running 5S or 6S. 4S on a 1950/7 would only get into the 27000 RPM range. Kinda low. 5S seems suited for the job by bringing the motor into the 34,000 range. If he's looking for 50mph, I think he needs to look at 5s or maybe 6s.

What do you think?

neweuser · 02.01.2007, 02:08 PM

From my understanding, hitting the 50's is not that easy to do. On my 5s it was not capable with a 9xl anyway (low kv). Maybe 5s on 7xl, but then you're looking at high temps, especially in 100 degree weather. I think the MM could do it, but how well would be the question.