Kv rating means for every (V) or volt of input current to the motor, you get (RPM) out- so a 3300KV with a 7.4v 2sLipo gets a max 24,420 theoretical RPM. Turns are just like brushed motors, it relates to the amount of wire wrapped around the stator (instead of armature), the fewer turns, the more RPM (and torque) the larger the number, the higher the resistance and the fewer RPM's-
Most sensorless motors are KV rated, most sensored motors are in turns-
Good into and thanx for the quick response .. so a stock class running 17.5 turn motors are what kv? Is there a Formula? If I run a 5700kv. what turn does this equal .
slvrback wrote: If I run a 5700kv. what turn does this equal .
There is no direct conversion between kV and turns though, a 5700kV could be anything between 6.5T and 8.5T, depending on the motor design. Rotor magnet strength, rotor diameter, air gap, wire diameter in the windings, type of windings will all affect the kV of a motor.
Race motors use turns because it should be pretty simple to measure wire diameter and how many turns of wire are used in the motor. kV ratings work for the basher crowd as their biggest concern seems to be "how fast does it go, mister?"
and on e you factor in timing, and even better, variable timing, it gets even more intricate
then again we re a vintage site
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I'm sure there is a chart somewhere out there to tell us what the equivalent brushless motor turns are to brushed motor turns. Maybe this can be a quick and painless fix for me and possibly...
I apologize in advance for the generality and newb-ness of a question like this but I don't really have the off-road RC experience to know whats what. I'm going brushless, lipo, etc in an RC10 runner build and I'm ready to order a motor. I will go...
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Thanks for the replies, I did wind up ordering a 10.5. It sounds like it'll have all the potential I could want, I figure I can gear it 'slow', see how it runs and go from there.
Hello all, just found this forum and i'm very impressed. I've recently pulled my gold tub out of storage and re-built it for my son. my problem is i cant seem to keep it from rolling in the turns (on the street). besides softening the rear...
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just try lowering the whole buggy, you can move the shocks where they mount on the shock towers so the end result is the suspension arms sitting more horizontal, also put the shock clamps at the top of the shock..pics would help us..good luck 8)
I'm buying some new stuff to put a slash together for my nephew. All I really have left to buy is an brushless ESC/motor and batteries for it. I'll most likely be putting a sensorless ESC/motor into the truck. I have very little experience with...
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Thanks guys.
No, he won't be doing any racing. I think I might try one of these:
I might try a 'Leopard' setup.
$60 seems like it's Worth the risk. Plus, it's Thunder Cats powered.
that is a good price WOW.
Hey i gotta question for any one too answer. My Rc10 is favoring left turns, I have already adjusted the steering servo, and the and the switch on my transmitter. But it will barely turn right. Waht i notice is the arm on the left side is rubbing...
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The best bet on steering fix is to remove to servo horn center all your adjustments on the tx. Then make sure the the distance from the steering linkages to the horn is correct so the at the servo horn can move forward and back in the full travel of...
Hi all! Several weeks ago I've bought this Yokomo motor and yesterday I found the time to open it.
The seller says it's 15x1 turns but wire seems to thin and the armature so full to be correct, any guess? Or info?
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Recently I've purchased a Wing Stock RF and a Wing 2 in the attempt to form the complete Wing motors line up. The Wing 2 seller have been so kind sending me some old advs regarding Yokomo motors that clear the point about turns:
YMW4 Wing 4 Modified...
I used to race back in the 90's and can remember I used primarily two motors. One was an Orange Brushed LRP motor and the other a Black Brushed LRP motor. Do anyone know how many turns these motors were? I tried to search a bit on the net, but no...
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This is awesome. Thank you. Now I can see the “Magic” is 11x3. Still pondering what the Black might be though.