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Old 04-11-2013, 08:09 AM   #1
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Default 12R5.2 gearing

Just bought this new car, I'm fairly new to it, just wondering what you guys are running for gearing ratios on a 17.5 blinky setup. The track I'm racing at is fairly large.
Thanks for any input.
If it helps its the new tekin motor.
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Old 04-11-2013, 09:58 AM   #2
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I run around a 106mm rollout on a 104x48 carpet track.

43/41 cut 76/60 gearing with a pinion range 58-62 should get you close...
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Old 04-11-2013, 10:34 AM   #3
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Thanks that should get me close.
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Old 04-11-2013, 06:00 PM   #4
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That is with a Reedy Sonic v1 with 40 timing on the endbell
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Old 04-12-2013, 05:54 AM   #5
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Wow 40 degrees!!!, my motor is a gen 2 tekin, right now it came from the factory at 10 degrees.
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Old 04-12-2013, 06:50 AM   #6
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Quote:
Originally Posted by eazy70 View Post
Wow 40 degrees!!!, my motor is a gen 2 tekin, right now it came from the factory at 10 degrees.
Start it there. Get the gearing close and roll some timing in later.

Note that all motors are different. Some like Trinity motors have 30deg of timing when the end bell is set to zero. On those you run 10-20deg of timing for a total of 40-50deg true timing.

On a Reedy motor zero is zero so you run a true/indicated 40-50 deg timing.
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Old 04-13-2013, 06:25 AM   #7
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I'm new to this brushless timing, we are running a blinky class, I thought that meant the esc doesn't add any timing. Or am I mistaken?
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Old 04-13-2013, 09:09 AM   #8
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No ESC timiing but you can crank the timing on the endbell of the motor..
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