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Old 01-09-2010, 01:39 PM   #1
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Default Roll out on 1/12 scales...........

How do i work on roll out? i have a crc 1/12 scale gearing is 75/44
Where can i get a chart.. and stuff thank you..
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Old 01-09-2010, 03:12 PM   #2
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Go here: http://www.gearchart.com/index.cfm?f...n=chart.create

You can pick your spur/pinion combination, add your tire size and produce a chart that can be printed.
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Old 01-09-2010, 03:46 PM   #3
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Originally Posted by Clairvoyant16 View Post
How do i work on roll out? i have a crc 1/12 scale gearing is 75/44
Where can i get a chart.. and stuff thank you..
A description, charts (metric) and spreadsheet are at


If you want to use a different spur size to any of those supplied, use the spreadsheet and change the spur size. All the figures are automatically recalculated.

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Old 01-10-2010, 03:23 AM   #4
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If you have an iPhone, or iPod Touch, go to the App Store and download GearIt. It is the best piece of software for gear ratio calculation ever devised!! It costs 59p in Europe, probably 99c in US.

GearIt works with any car - TC, Off Road, Pan, Rallycross, Gas Track - and allows any available range of pinions and spur gears you can think of. It is independent of pitch (DP) of gears used, and independent of metric or imperial units. You get automatic updates, and you can add new cars at any time (internal ratios)

So clever, so simple... so buy one! HTH
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