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Old 12-20-2007, 03:45 AM   #1
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Default Find Spur From Rollout


I was wondering if there is a formula to work out the spur gear size you need from the rollout if you already have the pinion size, i know the Pinion Formula is "Pinion = (Rollout * Spur * Internal Gear Ratio) / (Tire Diameter * 3.1416)"

But is there a Spur formula?

I want to add a Pinion, Spur finder into my Offline Rollout Calculator.

Any help will be greatly appreciated

http://www.rctech.net/forum/electric-road/290595-new-offline-rollout-calculator.html#post5695222 - Offline Rollout Calculator
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Old 12-20-2007, 09:12 AM   #2
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rollout= diameter*pi*pinion / spur*internal
spur= diameter*pi*pinion / rollout*internal
pinion= rollout*internal*spur / diameter*pi
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Old 12-20-2007, 09:22 AM   #3
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dam, 9 mins late.... took away the only thing that i could of written 2nite that would of made me look smart

good work!

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