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Old 01-31-2016 | 07:24 PM
  #44072  
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SLOWINSLOWOUT
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Originally Posted by performula
What pinion and spur gear sizes should I get for 17.5 and 13.5t? I want to run 48p as thats what I have but im guessing I need to go with 64p.
For 17.5, run a 72t spur, in 13.5, 76-84t. Roll out will be from hi 70's to mid 80's in 13.5, low 90's to mid 100's in 17.5. So, depending on tire size, will need pinions from 43-58 to cover both classes and all tire sizes. This is with 64p gears, not sure with 48p.
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