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Old 03-31-2017, 06:07 AM   #1
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Default 21.5 R1 first gen timing question

I have an R1 21.5 and I'm wondering what people found the best timing and gearing to be. I'm currently timed at about 18degRees and geared at 4.17.
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Old 03-31-2017, 06:17 AM   #2
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Originally Posted by Timbulb View Post
I have an R1 21.5 and I'm wondering what people found the best timing and gearing to be. I'm currently timed at about 18degRees and geared at 4.17.
depending on the track maybe try around a 3.3fdr. i run my 21.5 on a medium/large track at 48 degrees timing and at a 3.4fdr
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Old 03-31-2017, 06:33 AM   #3
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depending on the track maybe try around a 3.3fdr. i run my 21.5 on a medium/large track at 48 degrees timing and at a 3.4fdr
Most tracks I run are about 9 second tracks. I feel if I ran those settings I'd get about 2 minutes before overheating the motor.
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Old 03-31-2017, 07:08 AM   #4
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On a large outdoor track that is approximately 200x80 ft, I used a gearing of 3.8 and timing of 20 degrees on the can. This was good enough to finish 3rd at our annual trophy race. On a smaller indoor track I was geared at 4.0-4.2 at 20 degrees timing.
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Old 03-31-2017, 07:11 AM   #5
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My son is running that motor in scale spec and we are running 3.8 with about 30 degrees of timing. From what I recall reading, this motor seems to cog a little the higher you go in timing. I've gone up to about 38 degrees of timing with this motor before I notice the cog.
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