Speedometer options/opinions/thoughts
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Road Master
Joined: Jun 2009
Posts: 1,062
Likes: 18
From: Beautiful SW Missouri Ozark Mountain Country
I dealt with this years back with my 1978 FXS speedometer driven off the front tire when I changed from a narrow glide front with a 19" tire to a wide glide front with a 21" tire. If I remember right I used a 2260:60 drive ratio speedo to have it calibrated right and if I remember right ,front tire speedo drive was a 2:1 for 19" and the tranny drive was a 1:1, so you'll have to make sure you get the right ratio speedo, but Im pretty sure I used a 2260:60 for a 21" tire
Road Warrior
Joined: Dec 2012
Posts: 1,539
Likes: 692
From: magnolia tx
as long as the speedo drive is the correct size for your axle shaft and the speedo is the correct ratio and I don't know how wide your axle spacer is? as long is the speedo drive isn't wider than your axle spacer your good, you can always add washers or a spacer if needed if the drive is narrower but not the other way around
Road Warrior
Joined: Dec 2012
Posts: 1,539
Likes: 692
From: magnolia tx
and if I remember right if your using a 2260:60 speedo you have to match the drive 2260:60 also, you can use the more common 2:1 ratio set up but I think your speedo will be off a little, Harley went to the odd ball to 2240:60 Ratio Speedometers Fits all FXWG models from 84-90, and a wide glide is a 21" tire. Another thing is the axle bearing seal, if the spacer built into the speedo drive is the same size outside dia as your currant spacer, if not may need to replace the axle seal
Last edited by mike131; Apr 11, 2020 at 04:04 PM.
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