Sean Cochran

iTrader: (1)

That rotor is not legal to use in Spec class.

B00t13g

iTrader: (9)

Very well! I've only run it on a medium indoor carpet track and ended up at 3.9fdr with 38 degrees of timing. For reference I ran a d3.5 at 3.8 and max timing.

Wade....

iTrader: (2)

Ran the 17.5 mach2 for the first time in my 1/12th. Motor seems to have excellent rip... I don't think I have found the sweet spot yet, but it was running good @ a hair less than max timing and ~94mm roll out. Temp. 158 after the main.

RedBullFiXX

iTrader: (34)

might try..
less timing more roll
more torque, less fade

90x45 high grip rug 105mm 40 timing

Wade....

iTrader: (2)

Thanks! Will give it a try!

F1Jet

My sonic motor powered car took a huge tumble and immediately sounded like the gear mesh had gone bad and it would not go so I pulled in into the pits and reset the mesh. But the motor still would not turn and it was hot so I just stopped.
Tonight I pulled the motor out of the chassis and inspected it and found the motor timing plate was rotated about 90 degrees, way past the timing marks. I just used my fingers and was easily able to rotate the back plate to bring it back to the zero mark and the motor now runs, but it sounds horrible and even worse, as I watched the vibration started moving the timing plate. It seems the set screws were not holding the timing plate in position. I have tightened them with screwdriver and they are holding position but the motor still has the horrible howling sound.
Any suggestions? Do I need a new bearings? A new rotor? A new sensor board?

Wade....

iTrader: (2)

Edit: Thought I knew your issue... but it started doing this after it was already working fine? This isn't a fresh install is it? I thought you might have wired your motor wrong.

JamesL_71

iTrader: (13)

This.

The motor seems to work best for me around 38-40 degrees, 102-104mm depending on layout. It does seem very sensitive to timing changes, however. I have seen 1.5-2 degrees result in 1.5 tenths gain/loss in fast lap.

LloydLoar

iTrader: (20)

I ran a Reedy 17.5 at carpet nats (as James knows). ~103.5mm rollout, 40 deg of timing. Stock rotor. I missed the A by .002 of a second and fast lap was less than a tenth off-pace, so it was p close.

samnelso

iTrader: (1)

edit - deleted

JamesL_71

iTrader: (13)

I wasn't sure if you ended up where we were talking about... glad to see that it worked out well, though!



Edit: Oh come on Sam... that was funny! But let the record show that I was not the first person to bring it up!

LloydLoar

iTrader: (20)

I have been crying myself to sleep every night, and you guys gotta go and rub it in. two thousandths.

kinga

iTrader: (15)

Does anyone know when the mach 2 is going to be roar approved?

Mornedn

its already approved

gmc13

Any ideas how to get more speed out of a 21.5t in Blinky with FDR is set at max 6.0
a couple other racers are far quicker top end than mine..I have tried 45 degree timing. motor temps are only aroung 50-55 degree celcius. TLR22 2WD offroad buggy...
Cheers