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Old 10-17-2013, 12:55 PM   #931
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What size was the track at the IIC? And what were the spec tyres in Mod rubber sedan
48x96 and jaco blues for all rubber classes
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Old 10-21-2013, 09:09 PM   #932
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Does anyone know if results will be posted? It is kind of a pain to keep clicking back and forth on seperate pages on liverc.
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Old 10-21-2013, 11:39 PM   #933
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Does anyone know if results will be posted? It is kind of a pain to keep clicking back and forth on seperate pages on liverc.
http://s3.amazonaws.com/bitter_event...ll_results.pdf
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Old 10-22-2013, 07:48 AM   #934
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Really enjoyed the SpecGT class and I'm looking at setting up something similar at a club level and figuring out what is involved. One question, how were the SpecGT motors matched for the event by Tekin? Where they all simply locked to a specific timing or was there more screening and testing of each motor to make sure they matched?
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Old 10-22-2013, 07:53 AM   #935
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Really enjoyed the SpecGT class and I'm looking at setting up something similar at a club level and figuring out what is involved. One question, how were the SpecGT motors matched for the event by Tekin? Where they all simply locked to a specific timing or was there more screening and testing of each motor to make sure they matched?
Timing can be locked in with the RS Gen2 Spec ESC
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Old 10-22-2013, 10:34 AM   #936
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According to what the Tekin rep told me, they put the motors on an analyzer and made sure all of them turned the same RPM. Once set to the proper timing for this, they used nail polish to mark one of the screws so that the timing couldn't be changed without the nail polish showing it.
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Old 10-22-2013, 01:01 PM   #937
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Thank you much sir. It is easier through the link you posted.
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Old 10-22-2013, 03:57 PM   #938
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Timing can be locked in with the RS Gen2 Spec ESC
There is no timing in a RS gen2 Spec. It was locked on the motor can.
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Old 10-22-2013, 04:51 PM   #939
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There is no timing in a RS gen2 Spec. It was locked on the motor can.
Motor timing can ALSO be locked down, i.e. no matter where the endbell ring is, timing can be set to a predetermined value, at least that's how I understood it

Apparently this is a unique feature with the Tekin Spec
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Old 10-22-2013, 05:20 PM   #940
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From what I understood of Tekin's post before the event...the ESC could be set up to only use the sensor wire to start the motor turning in the right direction. Once moving the ESC would be in sensorless mode with locked timing. That way the motor timing would have nearly no impact on performance. IE...dual mode.
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Old 10-23-2013, 08:00 AM   #941
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I posted a link to the results from this year and last years iic on the home page at the end of the last update, click here.
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Old 10-23-2013, 10:57 AM   #942
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The systems used for the Spec GT Class this year feature our released at the IIC RS Spec esc. This is a locked in blinky mode esc, no boost available. We set the motors timing to about 10 degrees and matched them all by kv prior to marking them for tampering.

The RS Spec has data logging as do our other Gen2 esc's. This allowed the Spec GT guys to download their last run, check to see motor temps, battery voltage, motor rpm, esc temp and throttle input. I was there to help them see what was going on and offered advice for changes,etc.

For example none of the guys were topping out the rpms on the straight away, nobody. So a few decided to actually drop gear and went faster! In the end even though the FDR was limited to 4.5 half of the Amain guys were geared as low as 4.7! This gave them better bottom end in the infield(90% of the layout) while NOT giving anything up on the straight because the motor was still revving out! This lowered their lap times.

Being able to make a change, see the result in front of you with data that you cannot refute is what racing is all about.

On top of this, they were able to take the systems home for $80 for motor and esc...
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Old 10-23-2013, 11:04 AM   #943
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Randy, When is the hotwire software coming for us to be able to manage the new ESCs we bought?
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Old 10-23-2013, 12:40 PM   #944
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For example none of the guys were topping out the rpms on the straight away, nobody.
So how does that look on the telemetry? Is it just that the RPM curve doesn't flatten out? How do you tell the difference between maxing the RPM and just not having enough power to accelerate any more?
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Old 10-23-2013, 12:50 PM   #945
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You could probably extrapolate based on how fast the R's climb per second and get an idea of how the motor is working. I would think you would do this with experimentation on different gearing to see what it looks like when its obviously under geared and over geared, and then see how you can mess with the plots with subtle changes toward the sweet spot.
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