Easy question for the seasoned vetrans

[Apples1]

hey guys, this will be a real easy one for all the old hands here.

what is the difference between a , just an example ammo 2300kv and the equivilant NEU motor @2300kv
or is it all about effiency?

also what is the difference between a 1515 1.5d 2700kv and a 1509 2.5d 2700kv

and also why is that generally speaking the bigger NEU motors have a smaller KV the bigger they get? shouldnt this be opposite and the bigger the motor the higher the KV,

and if the bottom line the bigger the KV the more power why spend all the money on NEU do they last longer?

i have no idea!

[jfabcustom]

With a larger motor you can run at a higher voltage. Voltage x Kv = RPM. So the motor has a lower Kv but when run at a higher voltage the rpms are higher.

[Apples1]

do you mean larger phisically? or in KV, ?

[jfabcustom]

Physically

[Ub Hauled]

bigger motors mean more heat dissipation due to mass and thus being able to handle the higher voltages...
it also means you have much higher torque, for instance, the difference in torque from a 1509 to a 1527 is ridiculous (showing the opposite sides of the spectrum here).
A good reason to get a NEU is not only the quality of the motor as far as assembly and finish goes but also the Efficiency. Efficiency on the highest Kv 15xx series NEU is 85%+ can versus a Feigao which is around 80% at best, it also means more output from the same setup (efficiency grows with the lower Kv motors). From what I hear, Steve Neu is conservative on his motor ratings...

[Flyguy55]

Bigger KV doesn't necessarily mean more power. KV is RPM per Volt unloaded .In your example , 2 motors @ 2700 KV with the same dia and length , the difference would be effiency . Which means more power and less heat.
The difference between a NEU 1509 and a 1515 with the same KV is comparing a little V6 and a big V8 . Both might turn 6000 rpm , but will not put out the same horsepower. In our case , the 1509 won't pull as big a prop in the same size hull .

The bigger motors with lower KV are made for bigger boats and get the RPM back with more cells , more voltage .

hey guys, this will be a real easy one for all the old hands here.

what is the difference between a , just an example ammo 2300kv and the equivilant NEU motor @2300kv
or is it all about effiency?

also what is the difference between a 1515 1.5d 2700kv and a 1509 2.5d 2700kv

and also why is that generally speaking the bigger NEU motors have a smaller KV the bigger they get? shouldnt this be opposite and the bigger the motor the higher the KV,

and if the bottom line the bigger the KV the more power why spend all the money on NEU do they last longer?

i have no idea!