I Contacted Jeff at Heads Up Rc, to get some information on how to Match brushless motors for twins and Quads, Jeff Has a KV Meter that he can do that with, but he does not sell them, I was wondering if a Tach could be used to match Different motors with too, If anyone has any info on how to Match Motors with, Please Post it, and I am Sure it will help a lot of other people too, Including Myself
Here is the Message that Jeff from Heads up Rc left. Take care and Have Fun, Chellie
Nice to hear from you!
The easiest way to match two brushless motors to be used in a twin is to check the motor KV with a KV meter
(we do not sell these, but they are available elsewhere).
Generally, it's not necessary to check the motor KV if the motors are from the same "batch". Motors from the same batch are generally very consistent in KV. Even if the motors are from two different batches, the difference in KV is not likely to be enough to cause a problem (though it is a possibility).
We have a KV meter at the shop, and we will check the KV of two motors for a twin if a customer requests it.
For quad copters, there really is no need to check the motor KV, as the flight control board adjusts the rpm of each motor continuously, and this automatically compensates for any difference in motor KV. There would need to be a very large difference in the motor KV to cause a problem.
We rarely post on the forums, but you can certainly share the comments above if you wish.