I am trying to find out how best to police brushless classes and to run them through tech, Is there anything special needed? Any help would be great, thanks in advance.

you need

a digital caliper 20.00 @ harbor freight
a digital multi meter less than 20.00 various stores
a digital inductance meter 150.00 or less
a zubie meter is nice but not a must have..

caliper to check rotors 12.3 mm only
multi meter to check resistance new method of teching
inductance reading to check each pole for proper min inductance

Thank you for your help, I have one more Question, I understand the use of the calipers, but how is the multi meter and inductance meter used? and what readings should I look for?

you need

a digital caliper 20.00 @ harbor freight
a digital multi meter less than 20.00 various stores
a digital inductance meter 150.00 or less
a zubie meter is nice but not a must have..

caliper to check rotors 12.3 mm only
multi meter to check resistance new method of teching
inductance reading to check each pole for proper min inductance

Actually Rotor size is 12.2-12.5mm.

To check resistance of each pole you will have to put voltage across each pole to check voltage drop to be accurate. I beleive Novak is working on a cheap checker that they will be selling. Does not even require the motor to be taken out of the car. It applies a small voltage load and checks the resistance at the same time.

EA

i noticed novak took down all the tech info and replaced it with coming soon.

that tool would be awesome for the tech dept.

EA is it still required to use the inductance meter or is the multi meter resistance better? or do you need both?

I wouldn't worry too much about looking at ROTOR size either - until somebody comes up with one that is STRONGER, yet SMALLER if you are doing 21.5 and 17.5 classes. (Nobody wants LESS RPM)

i noticed novak took down all the tech info and replaced it with coming soon.

that tool would be awesome for the tech dept.

EA is it still required to use the inductance meter or is the multi meter resistance better? or do you need both?

I think once the resistance check is finalized and such that you wont need inductance. The resistance will check the wire itself without anything affecting it like it does now (Magnet, amount of stator material, can material, etc). The resistance check will check the wire only and be a lot more accurate. At least this is how I understood it.

EA

yeah joe i fully understand in this case for oval racing bigger is not better..but the rule is no 13mm rotors...or 11mm for that matter,lol.

Kat - I worry LESS about rules that make people SLOWER than I do about performance ENHANCING infractions.

I've seen a couple USED motors bought that had the Bigger Rotor (in 17.5's) and thought WHO and WHY would have done this... It's been a while since I looked at one of the NOVAK 13mm rotors, but if I remember correctly, something was done to them..to make them OBVIOUS

Kat - I worry LESS about rules that make people SLOWER than I do about performance ENHANCING infractions.

I've seen a couple USED motors bought that had the Bigger Rotor (in 17.5's) and thought WHO and WHY would have done this... It's been a while since I looked at one of the NOVAK 13mm rotors, but if I remember correctly, something was done to them..to make them OBVIOUS

I think they have a solid shaft where as the SPEC rotors have a hole in the pinion end of the shaft.....I believe that is what was done.

EA

and i may be wrong but the on-road nerds may like the added torque? they may be the guys using the larger rotors?

I think they have a solid shaft where as the SPEC rotors have a hole in the pinion end of the shaft.....I believe that is what was done.

EA
The 13MM rotors have a groove in the section where the shaft tapers from the 3/16" bearing diamater to the 1/8" output shaft diameter.