I believe the big blue version has blue color wires in the windings. You can see them through the gaps in the motor can.

So anyone here have experience with the certified motor? How good are they?

I have been running my 17.5 certified for 4 mo. now... love it it is a strong fast motor has more power than my previous motor and has power at the end of a 6 min main.

ROAR max timing for 17.5?
 

I have a certified D4 1S 17.5 (1702RXX). The timing is set from the factory at 60*.

Most 17.5's are set at 30*. Does ROAR limit timing? If so my question is if the 1702RXX is ROAR approved, is 60* timing allowed. It just seems unfair to limit one motor to 30* and allow 60* from another.

I have read the ROAR rules, can't find anything and of course their forum won't allow questions and I can't find a ROAR link/email to ask specific questions.

No, timing is not part of the rules.

Does ROAR limit timing?

According to Jimmy Babcock there are no limits to adjusting motor physical timing, just can't use the ESC or Radio to adjust timing.

Just installed my maxilla with 28/75 at 50 timing in sct that is spot on

Timing inherently limits itself.

I agree.

I never thought you'd need over 50 really.

Then I received both of my certified motors...both were cranked, one at 60, other at 58.

Can I get some gearing suggestions for a SC10.2?

What it do' Trinity gives you a sheet with the information on it, but in case you miss used it. Take the internal gear ratio which I believe for AE .2 is 2.60:1 (same as my truck) and divide that by what you get after you multiply pinion and spur teeth. They have an optimal range in which it should fall in.

Copy the fast guys at your track or ask hobby shop is usually helpful also.

Sometimes it's rare!

What are the benefits/drawbacks of the 13mm rotor?

I have been contemplating getting one for my short course. I know it will add low end torque, but will it take away from top speed? Or can I gear up to compensate?

Also, is the 13mm rotor overkill in a B5 rear motor?

FYI- If you add the 13mm rotor your motor will no longer be R.O.A.R. legal.

With that said....
It will add a good amount of torque and take away rpm hence less top speed.
You can gear up to compensate.

13mm in a B5 overkill?
Not as long as there is adequate grip.

Dayton

I was wondering if someone was still riding that horse.

And, actually, as of July 2013 that statement is false.

According to the brushless motors list posted at Roarracing.com, the Trinity 13mm are at the very bottom of the list of approved rotors.

http://img.photobucket.com/albums/v3...ps5b8bd473.jpg

Thanks on everything else though.