Driver diameters

[Mtnviper]

With all of the different pitch tracks on the market now. I have been doing some calculations for the driver diameter sizes.
Should be helpfull when trying to calculate, what lug size track would fit on your sled!

10 tooth 2.52 pitch = 8.021"
9 tooth 2.52 pitch = 7.219"
8 tooth 2.52 pitch = 6.417"
7 tooth 2.52 pitch = 5.615"

8 tooth 2.86 pitch = 7.283"
7 tooth 2.86 pitch = 6.373"

8 tooth 3.00 pitch = 7.639"
7 tooth 3.00 pitch = 6.685"

Bill

 

[r0tax]

10 tooth 2.52 pitch = 203 mm
9 tooth 2.52 pitch = 183 mm
8 tooth 2.52 pitch = 163 mm
7 tooth 2.52 pitch = 142 mm

8 tooth 2.86 pitch = 185 mm
7 tooth 2.86 pitch = 162 mm

8 tooth 3.00 pitch = 194 mm
7 tooth 3.00 pitch = 170 mm

(converted to mm)

Oddly, was a little easier for me to compare/read in mm, decimals are confusing.

Great info, thanks Bill.

 

[Deadman]

are these internal drive sprockets?

 

[Mtnviper]

are these internal drive sprockets?

They would be both internal and extroverts. With extroverts you do not include the teeth in the diameter measurement. This is because the teeth ride trough the windows, and does not change the rolling diameter of the track around the driver.

 

[Deadman]

ok, I thought you were trying to determine clearance from cooler.

 

[powder muncher]

Don't matter Paddles are much taller than the extrovert drive lugs anyway.
Diameter + paddle height give you what clearance you are left with or not.