Brushless vs brushed motors

[Scheuee]

I am old school getting back into racing, what is the equivelant of a 13 turn double, 17 turn double etc in brushless form please and what is sensord and sensorless?
Thanks

[blue_pinky]

Hi,

No precise equivalents to be honest, and different brands have different equivalent performances....but...as a very rough guide...

Sensored motors are typical in 10th scale, and offer better control at low speeds/revs as the sensor knows where the rotor is inside at all times, and the esc adjusts timing accordingly to keep the response smooth.

Sensorless doesn't have that feedback, so low speed control/revs is not as smooth/controlled, and 'cogging' was common on the early ones (basically a stuttering effect of the motor not being about to spin up very well from stopped/low speeds). The latest breeds are much better though, and a lot of 10th scale newbies/club racers use them to good effect. Sensorless is pretty much standard and common place in micro (1/18th& 1/16th scale) racing.

In terms of numbers of turns...

10.5t sensored was/is considered roughly a 19t brushed, although 17.5t might be closer to that these days as brushless/esc technologies have developed! They are good for getting started if your new or very green.

For the more practiced, in 4wd 6.5/7.5 turn sensored motors are pretty much the way to go, and for 2wd's 7.5/8.5 are the norm.

With Lipo power the way it is, anything quicker than that is unnecessary for the typical indoor/outdoor track.

I see your in Newport...our Caldicot Club runs every Friday night, not sure if you've popped along yet...or fancy it? Many people to talk to and much to see every week if you looking for some friendly advice and a club to race at.

Check out www.caldicotrcracers.co.uk or our thread in the club section on here if you don't already know about us!

Hope it helps a little!

[Scheuee]

Hello thanks for the information. Very helpfull I have been to caldicot but idont know many of the faces, craig harris and pete belston are the only ones I remember from the olden days

[bodgit]

KV/BL/Brushed turn equivilent...

Castle Creations CM36 brushless / brushed equivelent:
S7700 (7,700kV) = 6-turn
S6900 (6,900kV) = 8-turn
S5700 (5,700kV) = 10-turn
S4600 (4,600kV) = 16-turn

LRP Vector brushless / brushed equivelent:
X-11 3.0 (11,400kV) = 3-turn
X-11 3.5 (9,800kV) = 3-turn
X-11 4.0 (8,600kV) = 4-turn
X-11 4.5 (7,800kV) = 5-turn
X-11 5.5 (8,100kV) = 7-turn
X-11 6.5 (6,900kV) = 9-turn
X-11 7.5 (5,900kV) = 11-turn
X-11 13.5 (3,350kV) = stock 27-turn

Novak SS/EX/Velociti brushless / brushed equivelent:
3.5R (10,500kV) = 3-turn
4.5R (9,000kV) = 5-turn
5.5R (7,400kV) = 7-turn
6.5R (6,400kV) = 9-turn
7.5R (5,800kV) = 11-turn
8.5 / SS5800 (5,000kV) = 13-turn
10.5 / SS4300 (4,200kV) = 19-turn
13.5 (3,300kV) = stock 27-turn

Losi
◊ LOSB9400 3.5T 9120kv
◊ LOSB9401 4.5T 7140kv
◊ LOSB9402 6.5T 4880kv
◊ LOSB9403 8.5T 3640kv
◊ LOSB9404 10.5T 3080kv
◊ LOSB9405 13.5T 2360kv
◊ LOSB9406 17.5T 1820kv

[blue_pinky]

Originally Posted by Scheuee

Hello thanks for the information. Very helpfull I have been to caldicot but idont know many of the faces, craig harris and pete belston are the only ones I remember from the olden days

Well if you do come along again, just come and say hi...the table nearest the computer and door normally has someone from the committee on it, and we're all happy to chat, and are all oople folk as as well, so just introduce yourself!

Oh and Craig and Pete are from the olden days...no secret there...so feel free to say that, they love being reminded!