RC-Monster Forums - MGM compro + feigao 6s + TC4

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- - MGM compro + feigao 6s + TC4 (https://www.rc-monster.com/forum/showthread.php?t=603)

we got mixed readings from my friends bushnell radar gun, but my L3 was in the high 60's, low 70's on 8 cells.

takes millisecond to locate the rotor...... do you think that would be even measurable? please, it would be like .001 of a second. I guess they don't understand how a 3 phase motor works, and the instant torque it provides. That is one nice feature of them on machinery such as lathes and milling machines. You can snap the direction back and forth (use it to tap holes) and its like almost instantaneous. I think the brushed guys are just scared.

I've been meaning to ask what kind of GPS people are using to measure the speeds of these things, because the radar gun is too much of a pain, not to mention dangerous!

Garmin makes several models. Gecko, Etrex, etc. It weighs about 3 ounces.

I'm assuming (for instance, garmins cheapest, the etrex) records top speed?

Quote:

Originally posted by lipomax
I did a comparison not too long ago.. Basic 3600 vs. C4012 s (3500) and using 3s and 4s, they had the same top speed. However, the smaller motor was noticeably quicker off the line and because of the lower rotating mass, didn't "coast" as long either so it was actually more raceable. I'm DEFINITELY NOT saying the basic aren't good motors, they're awesome motors. Mike, when you say the 6s is a touch slower off the line - are you comparing it to the Basic 4200? The 6s has a kV of 5900 so it should be WAY faster than the basic 4200. I bet the Basic 5300 is faster than the 6s though despite the big difference in kV.

The 4200 is quicker off the line when achieving the same rpm as the 6s (higher voltage). The 6s is real close to the 5300 under load (5915 is the rating with no load-under load, the Kv is just over 5300). I think the 5300 would be quicker under the same conditions (gearing, voltage) than the 6s and only a touch slower on the top. It will also draw less juice!

Hey guys, where can I find the KONTRONIK TWIST-55 motor? any thoughts LIPOMAX?