RC-Monster Forums - View Single Post - e-maxx 3905 motor question

zeropointbug · 11:43 PM

I suppose you could use it, it's a higher Kv. unit, so there will be higher currents happening. Sure you can get alot of power from it, but it will heat up after a short while geared too high. 5 years ago, ppl would have thought the 1509 was a great motor for MT's... not anymore, 1515 is the standard, and even then things heat up for some setups, some ppl even moving on up to 1521.

I am running a 1512/3D (1700Kv) on 6s, when geared for 40mph, it has tremendous power (mostly on part of batteries), upwards of sucking 2300 watts from the pack! Temps are usually around 150 - 160F hard bashing...and 120 - 130F when racing at my local track (geared for 36mph), even after a 30 minute MAIN. Those temps actually surprised me, I was expecting much higher!

EDIT: Sry, this is in a BL Revo 3.3

	(#4)
zeropointbug Z-Pinch racer Offline Posts: 3,141 Join Date: Nov 2006 Location: SK, Canada	07.12.2009, 11:41 PM I suppose you could use it, it's a higher Kv. unit, so there will be higher currents happening. Sure you can get alot of power from it, but it will heat up after a short while geared too high. 5 years ago, ppl would have thought the 1509 was a great motor for MT's... not anymore, 1515 is the standard, and even then things heat up for some setups, some ppl even moving on up to 1521. I am running a 1512/3D (1700Kv) on 6s, when geared for 40mph, it has tremendous power (mostly on part of batteries), upwards of sucking 2300 watts from the pack! Temps are usually around 150 - 160F hard bashing...and 120 - 130F when racing at my local track (geared for 36mph), even after a 30 minute MAIN. Those temps actually surprised me, I was expecting much higher! EDIT: Sry, this is in a BL Revo 3.3 “The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens Last edited by zeropointbug; 07.12.2009 at 11:43 PM.