Speedo Gear question
(# of drive gear teeth)x(Axle ratio)x(Tire revolutions per mile)
1000
Just plug in the number of teeth on the drive gear inside the transmission (6, 7 ,8) multiplied by the axle ratio (3.00, 3.50, etc.) and multiplied by the tire revolutions per mile, then divide all that by 1000. The result, such as 19.27 is the approximate number of driven gear teeth required for proper speedo readings. Tire revolutions per mile can be found in the manufacturers specifications for a given tire style and size.
This is from the latest NPD catalog. pg 113, top right hand corner of page.
1000
Just plug in the number of teeth on the drive gear inside the transmission (6, 7 ,8) multiplied by the axle ratio (3.00, 3.50, etc.) and multiplied by the tire revolutions per mile, then divide all that by 1000. The result, such as 19.27 is the approximate number of driven gear teeth required for proper speedo readings. Tire revolutions per mile can be found in the manufacturers specifications for a given tire style and size.
This is from the latest NPD catalog. pg 113, top right hand corner of page.
ORIGINAL: mustanglover66
did you remove the retaining clip and bolt
did you remove the retaining clip and bolt
See if this info will help you regarding the number of teeth. http://www.z31.com/speedo.shtml


