does anyone use really big batteries?

[bl-is-future]

the 1y is 2200kv which is high but it is not so high that it will overheat with normal gearing. Gearing plays a huge role in heat as well. you can have the lowest wind there is and gear it up to high and it will still ever heat. You have many people that are very very knowledgeable telling what motors will work. You also want to choose your voltage according to the wind of the motor. In a muggy a 1515 will be plenty powerful and will run cool. Just choose a kv for your battery setup. the max is 60000rpm on the neu motors. kv * battery voltage = max rpm motor will produce. Get that around 50000rp and you are good. 60000rpm is max but you dont want to constantly run it there. 50000rpm is a good medium. ex the 1515 1y is great on 5s. the 1515 2.5d is great on 6s.

[ReV:-O]

ah im trying to aim for 60mph. i've been goin 50-55mph with my picco .28 revo so i'm looking for somthing a bit more

Originally Posted by ReV:-O

ah im trying to aim for 60mph. i've been goin 50-55mph with my picco .28 revo so i'm looking for somthing a bit more

if you want that kind of speed your electronics will run on the hot side no matter what brands you use unless you are only doing a few speed runs at a time

[ReV:-O]

if i get the 1515/1y on 6s, that will be about 50,000RPM which will be pretty quick. but if i get the 1521/1.5D on 6s it will be around 40,000RPM but it will be more powerful so i could gear it higher

[ReV:-O]

ok guys thanks for all of your great help. I've finally made a FINAL list of all my stuff that i will get:

Neu 1521/1.5D motor
Poly RC PQ-6000XP-6S Li-Poly Battery
I was going to get the MMM esc, but after reading that the v2 MMM were still having problems i am now looking for an alternative. does anyone know any good esc's that will work well with my setup? price is not a constraint

[bdebde]

The MGM esc's are great now with the newer firmware.

[ReV:-O]

MGM you say? any specific model? thanks

[bdebde]

With that motor, I would probably go for the 22418.

[ReV:-O]

is that because it has 224A continuous? the motor should only put out about 100A continuous, possibly spike to 200A occasionally.

do you know the continuous rating of the MMM or the peak rating?

[bdebde]

I just like to be sure the esc will handle it. Not sure about the MMM, Patrick from CC gave some rough numbers in a thread around here somewhere. I think he said they were getting 600 amp spikes in their 70 mph emaxx.

*edit* Here is the post. 100 amp continuous and 800 peak.

[ReV:-O]

o right. 100A continuous isnt actually that much if the battery can do 150A continuous, its kinda limiting the motor. maybe i should go for one of the MGM's, they look pretty capable although they dont have a fan so i wonder how they keep cool...

Originally Posted by ReV:-O

o right. 100A continuous isnt actually that much if the battery can do 150A continuous, its kinda limiting the motor. maybe i should go for one of the MGM's, they look pretty capable although they dont have a fan so i wonder how they keep cool...

they keep cool due to good quality hardware and design....if you have those 2 things there is no need for a fan, and stay away from a Quark

[bl-is-future]

that is continuous 100a, that is plenty, and then the 800a peak, WOW the motor will not be starving for any energy.

[ReV:-O]

is this one any good do you know?

http://www.quarkbrushless.com/pro_carcontrol_125b.htm

[bdebde]

You can get the MGM's with fans on them, if you must have fans, but they stay pretty cool without. The quarks are iffy on 6s, some do it, some don't, and it seems they are hard to get support for now.