When Motor Turns not listed?
05-21-2017, 07:14 PM
#1
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When Motor Turns not listed?
I am getting back into RC racing after almost being gone for over 15 years. It used to be all about turns and winds but now it is turns and/or Kv. I have read up on turns vs Kv and have a good understanding of the two. However, my question is regarding motors that qualify for racing. I checked out my local track and to qualify for most races the motors are limited to a certain amount of turns. I have noticed that many motors do not list turns; they only list Kv. In this case how do you know if you can use this motor? Do you have to stick with motors that list the turns if you plan on racing? Also, any recommended motors? Prices seem all over. Reedy was big back in the day but seem way over priced compared to these Castle Creations I have been reading about.
Thanks
Cly.
Thanks
Cly.
05-22-2017, 06:46 PM
#2
Most clubs typically follow ROAR rules for racing and the "ROAR Approved" motors are typically sensored motors:
http://www.roarracing.com/approvals/...lessmotors.php
Kv ratings are a misnomer, they are more of an "average" rating where most sensored motors provide the ability to adjust the mechanical timing advance as well as installing optional rotors with varying levels of magnetic strength which can significantly change the kV.
17.5T motors are typically used for Stock Spec racing and no 2 brands of motors will perform the same... to ensure the best possible performance, you would do yourself a huge favor buying a "Certified" motor. Another option is to invest in a motor analyzer and tune the motor yourself by shimming the rotor and adjusting the mechanical timing to get the max possible power out of it.
If you're racing in an open mod class then it doesn't matter what brand of motor you get, just pick a turn that's most popular for your club... a decently priced brand for mod would be Turnigy Trackstar motors, though they are marginal performers when compared to a "Certified" motor in stock spec:
http://www.roarracing.com/approvals/...lessmotors.php
Kv ratings are a misnomer, they are more of an "average" rating where most sensored motors provide the ability to adjust the mechanical timing advance as well as installing optional rotors with varying levels of magnetic strength which can significantly change the kV.
17.5T motors are typically used for Stock Spec racing and no 2 brands of motors will perform the same... to ensure the best possible performance, you would do yourself a huge favor buying a "Certified" motor. Another option is to invest in a motor analyzer and tune the motor yourself by shimming the rotor and adjusting the mechanical timing to get the max possible power out of it.
If you're racing in an open mod class then it doesn't matter what brand of motor you get, just pick a turn that's most popular for your club... a decently priced brand for mod would be Turnigy Trackstar motors, though they are marginal performers when compared to a "Certified" motor in stock spec:
