sosidge

I want to see the ROAR construction rules for brushless motors that everyone claims their motors meet.

However I cannot find mention of them anywhere on the ROAR website (www.roarracing.org), only brushed specs.

Are they published anywhere online? Or can someone cut and paste them here?

Thanks.

or8ital

iTrader: (38)

8.7.5.0 to 8.7.5.7

http://roarracing.org/downloads/2007rulebook.pdf

sosidge

Thanks for that, had already scanned through that section but totally missed them!

sosidge

A question for the techies now...

To make the fastest possible motor for a given wind, would the brushed theory of a short stack/stator (ie less wire) be the way to do it - ie. wound around a 19.3mm stator.

And as far as rotor diameter, would a larger diameter rotor give more power due to the increased magnetic material, but maybe also less rip due to the greater weight and inertia?

Grizzbob

iTrader: (2)

Not sure about the first one, but on the second question, I believe depending on the rotor's composition, the diameter DOES make a notable difference in the motor's power output. The reason I found this out was from talking with Bob & Charlie from Novak after I bought my 13.5(which was among the first to already come with the sintered rotor), & they told me that if they had made the sintered rotor the same diameter as the original bonded one, the motor would be WAY too powerful to be anywhere close to stock brushed motors, so that's why their sintered rotors are smaller than the bonded ones(at least it's one reason, there may be additional ones).....