Motor Tuning: High RPM vs High Torque rotors explained
Ғылым және технология
In this video I compare the KV and Amp results from a fixed timing 17.5T brushless electric motor that had a high rpm rotor in it and change it to a high torque rotor and show the difference it makes in rpm and amp draw.
In general, in a brushless motor a high strength rotor(1600+ milligauss) will draw more amps but show less rpm, where a low strength rotor(1500 milligauss) will draw less amps but have a higher rpm. You can use this knowledge to tune your motor for your track conditions.
Where to buy: www.ebay.com/itm/Surpass-540-...
Test Equipment:
Motor Measurement System (MMS)
www.racersmeasurementsystems.com/
SkyRC Motor Analyser
www.skyrc.com/index.php?route=...
Maritime RC Racing events at: www.mrcr.ca
Пікірлер: 7
Best explained video I have seen on this type of application thank you !!!
Well done. Thanks!
great video
I stopped racing Touring Car (17.5) in 2017 and using my Fantom meter, the BEST stock 7.2/12.5 rotors were around 1650 to MAYBE 1700. I just bought a "modern" car (of ALL classes in RC, the one that changed the most in the last 7 years, is Touring Car as they pretty much all copy the Awesomatix car by eliminating hinge pins, going to pivot ball outers, SUPER short shocks and mid motor) I just bought a relatively inexpensive Rocket RC Superlight 17.5 and noticed immediately the rotor was EXTREMELY hard to turn once in the car. It states it is ROAR legal so I am assuming that still means a 7.2mm inner diameter. Anyway, on my Fantom it is registering 1800/1810 gauss! It seems to me I am going to have put a bigger pinion and wind up with 3.85-3.95 FDR on my medium sized black carpet track. Pretty incredible!
I always feel a high rev motor over geared slightly is better for more stable pull without wheelspin.
@lawton70
2 жыл бұрын
Agree, I use this technique on a low grip offroad track to take the bottom end out of the motor.
Cheers