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racer1812

iTrader: (31)

Just like with brushed motors the "T" is for turns. The less turns or lower the number the faster the motor. BTW a 3.5t is insane fast.

burnineyes

iTrader: (17)

The "T" stands for turns. This is the number of times the wire inside the motor is wrapped around the stator. A smaller number of turns typically equals less resistance, and more power. A higher number typically means more resistance, and less power. The factors can get extremely complicated, but thats a basic idea.

rct281048910

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racer1812

iTrader: (31)

I'm not sure the sidewinder is rated down to a 3.5t which is rated around 10,500 kv depending on the motor.

jeremytap

iTrader: (6)

Yea there is no way a sidewinder can handle a 3.5t. My mamba monster can't even do that without over heating.

PaPeRo

A brushless 3.5T motor needs to be mated to at least a 120A (continuous) ESC to run efficiently. Anything less and the ESC will overheat and thermal often.

Lazer Guy

iTrader: (1)

All the new Castle 1/10th motors now say what turns they are.
My new 5700kv says it's a 3.5t right on the motor, the 9000kv now says it's a 2t.

Duster_360

iTrader: (21)

Castle now quotes the equiv turns on their site in each ad for each motor. They don't agree with what you're seeing on the motor though - the 5700 says "The 5700Kv motor is roughly equivalent in top speed to a very good 9t or 10t brushed motor on 6 cells."


http://www.castlecreations.com/products/cms36-5700.html


There's a similar statement in each of their motors.

Krio

iTrader: (159)

There are also several ways to wrap those 3.5 turns of wire. The mamba motors use a slotless design compared to the more standard slotted design of ROAR legal stock brushless motors. The 3.5 turn 5700kv castle motor is close to a 6.5-7.5 turn "roar" motor in power.

Dave H

They don't agree because there is not a direct relationship between brushed turns and brushless turns. Not to mention the wind style, delta vs. Y for example, slot vs. slotless design, etc.

racer1812

iTrader: (31)

This is getting off point but while I don't have an issue with quality of CC stuff, I simply can't use it because they don't really follow the ROAR rules like everybody else. just $.02 in the kitty

Duster_360

iTrader: (21)

I understand that. I'm just a basher on the other side of the coin and I find Castle products have been 100% reliable for me. The only prob I've ever had with any of their stuff was a 1717 motor that mistakenly came with a 6mm shaft - Castle did resolve that at no cost to me.

AE RC10fan

Is there a chart/table that compares brushed TURNS vs brushless TURNS vs brushless KV? It sounds like every manufacturer builds their motors differently; has someone put together a chart as an easy cross reference?

I am looking for a cheap and reliable brushless system to replace the stock electronics in my SC10 that will still let me run in a stock class. From what I have read, 27T is a typical brushed stock motor. 17.5T is a typical brushless stock motor. The new SC10 RTR - Brushless has a 3300kV brushless motor. Are these, 27T-17.5T-3300kV, all more or less the same rated motor?

Craig