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Trinity Duo II 13.5 brushless motor, 2s lipo, what spur and pinion?

Trinity Duo II 13.5 brushless motor, 2s lipo, what spur and pinion?

Old 02-13-2010, 09:40 PM
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Default Trinity Duo II 13.5 brushless motor, 2s lipo, what spur and pinion?

I have a Tamiya evo IV. Has a Trinity Duo II 13.5 motor. I am interested in racing the 13.5 class, but do not know the best spur and pinion to run. I will be running a 2s thunder power lipo. Any suggestions?
Thanks
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Old 02-14-2010, 06:05 AM
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Alex in order for you to get the help you need we would half to know what size of track and is it carpet or asphalt and are you racing oval or onroad and it would help to know what esc you are useing , good luck
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Old 02-14-2010, 09:08 AM
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Originally Posted by Alex Nielsen View Post
I have a Tamiya evo IV. Has a Trinity Duo II 13.5 motor. I am interested in racing the 13.5 class, but do not know the best spur and pinion to run. I will be running a 2s thunder power lipo. Any suggestions?
Thanks
In general for 13.5:
Small track, fdr ~ 4.8 to 5.2
Large track, fdr ~ 5.5 to 6.0
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Old 02-14-2010, 11:08 PM
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Thanks for getting back. I will be racing onroad (not oval) and asphalt. what would be the correct sizes for both large and small track. Good to probably have all the best sizes on hand anyway.
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Old 02-14-2010, 11:09 PM
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Forgot to mention, the esc is the new Tekin RS Pro.
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Old 03-01-2010, 12:56 AM
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Default FDR

I read this and ask myself where you guys bring tyre diameter into the equation? Unless you use rubber tyres and the size is always the same. We use foam tyres and they get smaller after every run and therefor use a different way to calculate. We call it rollout rather than FRD. Now that I see how it is calculated I realize the difference.
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