Brushed turns vs Brushless turns
#1
Tech Initiate
Thread Starter
Brushed turns vs Brushless turns
Okay, not sure if they can even remotely be compared but I thought I saw it somewhere and can't find it anymore. Is there any way to compare a brushless motor to a brushed in terms of how many turns?
I thought I saw somewhere that stock for brushless is 17.5t. Does that mean that a 27T brushed motor which is considered stock the equivalent? I am really trying to see what running my 20T or 16T brushed motor would be close to in terms of brushless classes. Would running a 20T brushed setup be fair against a 17.5 brushless class?
I am not planning on running anything other than sportsman class this year, but am just curious about this since I am not in a position to spend the money on a brushless setup right now.
I thought I saw somewhere that stock for brushless is 17.5t. Does that mean that a 27T brushed motor which is considered stock the equivalent? I am really trying to see what running my 20T or 16T brushed motor would be close to in terms of brushless classes. Would running a 20T brushed setup be fair against a 17.5 brushless class?
I am not planning on running anything other than sportsman class this year, but am just curious about this since I am not in a position to spend the money on a brushless setup right now.
#2
Tech Master
iTrader: (14)
There isnt really a 'stock' turn level; it all differs between manufacturers. the lesser number of turns, the faster the top speed will be. a lower turn motor will give you a much faster acceleration and oomph off the start but a lower top speed. there isnt really a set equivalent from brushed to brushless. output/top speed is measured more in kV than turns. 3.5T is 10,500 kV and a 8T or 9T motor is about 5,700 kV.the 20T brushed would get blown out of the water by the 17.5T brushless
#3
Tech Initiate
Thread Starter
Ok, a 17.5 is rated at 2,200 kv (15,840 rpm). A Tamiya dirt tuned 27T is rated at 17,000 rpm. Seeing ratings like that, I am not so sure about your last comment about my 20T being blown out of the water. Especially considering that a 27T motor is rated for more rpm at 7.2v than a 17.5 is rated at for 7.4v.
Guess I will just see how my brushed motors and my gearing stacks up to the competition in sportsman class.
Guess I will just see how my brushed motors and my gearing stacks up to the competition in sportsman class.
#4
Tech Master
iTrader: (14)
Ok, a 17.5 is rated at 2,200 kv (15,840 rpm). A Tamiya dirt tuned 27T is rated at 17,000 rpm. Seeing ratings like that, I am not so sure about your last comment about my 20T being blown out of the water. Especially considering that a 27T motor is rated for more rpm at 7.2v than a 17.5 is rated at for 7.4v.
Guess I will just see how my brushed motors and my gearing stacks up to the competition in sportsman class.
Guess I will just see how my brushed motors and my gearing stacks up to the competition in sportsman class.
btw... kV = RPM / V so for example a 17.5t @ 7.2 volts puts out 15840 RPMs so 15840 / 7.2 = 2200
#5
A brushed 20T motor like the old traxxas stingers, would get pwned by a brushless motor. Honestly you would have to get a really really low turned brushed motor to keep up with a brushless.