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XRAY - Model racing cars • View topic - Pinion Gear size

XRAY - Model racing cars
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Fireblade
 Post subject: Pinion Gear size
PostPosted: Mon Nov 19, 2018 19:40:04 
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Joined: Sat Nov 17, 2018 23:27:18
Posts: 4
What pinion gear are you guys running with a stock 84 tooth 48 pitch spur. I am looking to get a 13.5 and a 17.5 540 motors?
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MILAN
 Post subject: Re: Pinion Gear size
PostPosted: Mon Nov 19, 2018 22:37:54 
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Joined: Mon Jun 08, 2015 23:16:29
Posts: 5
it all depends on the race rules and if it's blinky mode
This is the mostly used gear ration that i know in blinky classes
with 13.5T motors - indoor 5.0 gear ratio and outdoor 4.5 gear ratio
with 17.5T motos - indoor 4.5 gear ratio and out door 4.0 gear ratio

You need to calculate the gear ratio:
(spur gear : pinion) x 1.9 = gear ratio

example:
(84 : 32) x 1.9 = 4,99

[1.9 is the inner ration in T4]
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Fireblade
 Post subject: Re: Pinion Gear size
PostPosted: Wed Nov 21, 2018 04:29:05 
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Posts: 4
Thanks MILAN
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Ruth47
 Post subject: Re: Pinion Gear size
PostPosted: Tue Jun 04, 2019 12:01:50 
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Joined: Tue Jun 04, 2019 11:52:55
Posts: 1


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