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Old 08-27-2003, 01:43 AM   #1
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gearing for dummies pls help

Guys,

im new at electic 1/10 touring cars i really want to know how to compute which pinion i should use. im using yokomo 4mtc-sd-ssg im racing stok motor for now i havent change my stock spur which is 70t, can you please help me with the easiest formula to compute the right gear thanks in advancce...
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Old 08-27-2003, 05:42 AM   #2
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To get your final outdrive ratio (which is the overall ratio of your gears) you simply do some math:

spur/pinion times your cars gear box ratio which should be in your manual.

like with my car I'm using a 88t spur and a 24t pinion so my formula would look like this:
88/24 x 1.83= 6.71

The 1.83 is my cars gear box ratio. You generally want to keep your final outdrive ratio around or above 7, dont go less otherwise you'll probably cook your motor.

Hope that helps
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Old 08-27-2003, 06:31 AM   #3
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http://www.arroyoc.com/index.cfm?fus...utilities.gear
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Old 08-27-2003, 06:48 AM   #4
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Great web site link.

Thanks,
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Old 08-27-2003, 08:55 PM   #5
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Talking thanks you all

thanks a lot for the help ill now i know. appreciate it..
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Old 08-27-2003, 09:16 PM   #6
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for your particular car ( SD ) here' s the calculaiton spur/pinion X 2.35 ..
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