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Old 04-03-2007, 11:33 AM   #181
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Is there such a thing as "Drive Frequency" in the Brushless mode?

Snowy.
no
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Old 04-03-2007, 12:00 PM   #182
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Quote:
Originally Posted by Essnowyt
Is there such a thing as "Drive Frequency" in the Brushless mode?

Snowy.
No...Tempest2000 was referring to "minimum drive", which is (AFAIK) the minimum percent of power supplied to the motor at a pull of the throttle trigger. The lower this setting, the smoother the motor will be out of the corners.
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Old 04-03-2007, 02:27 PM   #183
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Two points to Nexus Racing, for "Getting It". Otto, you get the short bus!

I really dont know how a 1% change in Minimun Drive will feel/affect the car. That is very minute change to the throttle curve slope. After the Stock Rubber Nats at Trackside I will try it!

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Old 04-04-2007, 02:19 PM   #184
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finally a try my 13.5 with sintered rotor on my t2 007 and i got to say this thing
is FAST , i had to gear it to the moon gearing 100spur vs 116 and 37pinion vs 30 with regular well tuned co27, my lap times did improve , however the rip from low to mid rpm curve is insane and a few adjustments had to be done , other than that i'm very happy with it and i'm going to buy a spare
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Old 04-04-2007, 03:03 PM   #185
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check out nexusracing.net. they've got great prices on the 13.5 Pro

vic
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Old 04-05-2007, 08:12 AM   #186
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Has anybody compared a good brushed motor against the new 13.5 pro? If so what is the comparison with both motors.
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Old 04-05-2007, 08:24 AM   #187
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Quote:
Originally Posted by woozer71
Has anybody compared a good brushed motor against the new 13.5 pro? If so what is the comparison with both motors.
it all depends how you gear it they are a little bit faster once you get the correct gearing
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Old 04-05-2007, 09:07 AM   #188
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Quote:
Originally Posted by woozer71
Has anybody compared a good brushed motor against the new 13.5 pro? If so what is the comparison with both motors.
"If I were to guess, I'd say the 13.5 with a bonded rotor is equal to a 23-25T brushed motor. When the sintered rotor installed, I'd say it's around a 20-22T brushed motor."

A well tuned 27T brushed motor puts out 130Watts of power. The 13.5 with a bonded rotor puts out 165W of power. The 13.5 with sintered rotor puts out 195Watts of power.
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Old 04-05-2007, 10:29 AM   #189
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Quote:
Originally Posted by woozer71
Has anybody compared a good brushed motor against the new 13.5 pro? If so what is the comparison with both motors.
IMO, the bonded rotor 13.5 is NOT as fast as a well tuned CO27. At my club I am able to turn 37 almost 38 laps with a well tuned CO27, with the bonded rotor I turn 36 laps. With the sintered rotor I turned 37 laps, and 1 night I turned 38.
Our track layout stays the same for the entire 12 week season. I turned 38 laps the night I tried a 41mm rollout. I am the second fastest guy at my club with touring car, the fastest guy at my club still runs brushed and turns 38 laps regularly. On the other hand I have seen people who can only turn 35 laps with a brushed motor, who get the sintered 13.5 and are then able to run 37.
Is is possible that I got a 13.5 that is not quite as good as the others? Yes, I suppose so, but remember the fastest guy at my club runs brushed and the closest anyone has gotten to him was with a sintered 13.5, which was me, and I was still 3 seconds behind him. Btw, I can turn 39 laps with a spec 19.
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Old 04-05-2007, 10:50 AM   #190
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Quote:
Originally Posted by Nexus Racing
No...Tempest2000 was referring to "minimum drive", which is (AFAIK) the minimum percent of power supplied to the motor at a pull of the throttle trigger. The lower this setting, the smoother the motor will be out of the corners.

hmm, back in the day of my novak cyclone tc2 I used to run 25% minimum throttle running 27T. and the deadband as short as possible.
and the drive freq at 600Hz. muchas punch..... muchas burning the comm mind
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Old 04-05-2007, 03:41 PM   #191
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true but on the brushless it produces so much torque you have to run your diffs tighter to keep them from slipping under acceleration. we are trying to keep the diffs from slipping....
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Old 04-07-2007, 10:28 AM   #192
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Does the GTB need to have the cooling fan if running the 13.5 brushless?
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Old 04-07-2007, 10:37 AM   #193
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yes, always run the fan in brushless mode as the ESC switches lots more during brushless operation as to brushed. creating more heat generated by the pcb components.

also run a fan on the motor if you can.
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Old 04-07-2007, 11:48 AM   #194
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Old 04-07-2007, 11:52 AM   #195
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Quote:
Originally Posted by 1M
Does the GTB need to have the cooling fan if running the 13.5 brushless?
Have seen two people in NorCal running the GTB without a fan and with the 13.5 motor (sintered rotor). No known problems.
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