RCCrawler Forums - Final Gear Ratio

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SeanD

02-28-2008 10:37 AM

Final Gear Ratio

Can someone tell me what the final gear ratio is for a stock transmission with a 96t spur, 15t pinion and a 55t motor? How many turns of the motor equal one turn of the wheel is what I am interested in - can this be easily calculated?

Sorry, I am not mathematically inclined,

Sean

Pete from Houston

02-28-2008 02:25 PM

6.40:1

http://www.rctek.com/pdf/gearing_cha...h_electric.pdf

RCminded

03-02-2008 10:27 PM

Your ginal drive would be 34.9. Meaning to turn the wheel one time the motor must turn 34.9 times. To find your final drive ration you take your spur divided by pinion. (6.40 like pete said) and multiply by the gear ratio for the rest of the drivetrain, in this case that number is 5.4576.

(96/15) X 5.4576=34.92864

"thumbsup"

SeanD

03-03-2008 01:18 PM

Thanks guys for the tag-team effort.

Sean

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