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Drivetrain Speedo gear correction???

  • Thread starter Thread starter AbhorrentSpecies
  • Start date Start date Jul 29, 2021

AbhorrentSpecies

Active Member
Jun 14, 2020
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Las Vegas
Jul 29, 2021
#1
  • Jul 29, 2021
  • #1
Okay, so I've been trying to logically figure out this question but I'm still uncertain. So if I'm supposed to have a 17 tooth speedo gear but I am running a 21 tooth, will that make the speedometer appear to run slower or faster than my actual speed???
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
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polk county florida
Jul 29, 2021
#2
  • Jul 29, 2021
  • #2
Changing the ratio between the drive gear and the driven gear will change the speedometer reading. A driven gear with fewer teeth will speed up the speedometer reading; more teeth will slow down the reading.
 
Reactions: JD1964

JD1964

there is enough sticking out to grab on to
15 Year Member
Jun 28, 2013
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Maryland
Jul 30, 2021
#3
  • Jul 30, 2021
  • #3
Keep in mind that sometimes you also need to change the drive gear in the transmission to get the calibration correct. Otherwise, drive and driven gears that are not compatible will chew themselves up in short order.
 
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