Calculating spur gear diameters

[Voodoobrew]

Make a copy or download an excel file to use.

I made this so that I could find the largest spur to fit in a certain car, so that I could increase my gear reduction for crawling by switching from 32p gears to 48p gears but keeping a smaller pinion.

For example I knew a 51mm spur would fit on my ax10 transmission with extended output shaft but I needed to know how many teeth that was at a certain pitch. I had a link to a calculator that did this, but I think it has been taken offline cause I can't find it now.

[Teng]

So far my spur still in stock size 56T. Just bought an extended output for my next project. I am so far 100% happy with the 10mm extended output
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1


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[whitrzac]

It was taken down but he has the code posted for download
Speed Calculator - Page 67 - RC-Monster Forums

[Voodoobrew]

Originally Posted by Teng

So far my spur still in stock size 56T. Just bought an extended output for my next project. I am so far 100% happy with the 10mm extended output
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Sent from my iPad using Tapatalk

I have similar and run a 96t 48p spur and 9t pinion

Originally Posted by whitrzac

It was taken down but he has the code posted for download
Speed Calculator - Page 67 - RC-Monster Forums

Yes, that's the one thank you!