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GS1100EZ vs GS1150 Fork Lengths?

TxGSrider

Forum Mentor
Past Site Supporter
I swapped out the forks and trees from a GS1150 (1984) and put them on my GS1100EZ (1982), but I never actually measured the lengths of the forks. Does anyone happen to know how much difference there is in the lengths... if any? I'm just curious.
Thanks!
 
I can tell you that the 83 - 750 (also 16" wheel) has forks that are approx 2.5-3" longer. All from memory (and from a long time ago when I built my 750 so I could be making all this up!) but about 35" instead of 32" rings a bell... something like that anyway!

They are also wider. The 1150 especially so. It's 16" wheel has a hub that is wider & from memory the brake rotors mount .75" further outboard (each side) compared to hub centre.
 
I can tell you that the 83 - 750 (also 16" wheel) has forks that are approx 2.5-3" longer. All from memory (and from a long time ago when I built my 750 so I could be making all this up!) but about 35" instead of 32" rings a bell... something like that anyway!

They are also wider. The 1150 especially so. It's 16" wheel has a hub that is wider & from memory the brake rotors mount .75" further outboard (each side) compared to hub centre.

I thought I would have the numbers but do not. In theory with the same profile F tire the difference would be 1/2 of 19"-16" at most 1.5".
 
My notebook says my 82 1100E forks are 31" from center of axle to end of tube. It is from 13 years ago and is a very quick scribbled notation, so take it for what it's worth...


Mark
 
My notebook says my 82 1100E forks are 31" from center of axle to end of tube. It is from 13 years ago and is a very quick scribbled notation, so take it for what it's worth...


Mark

I have 30.75"
 
Thanks guys! This forum is a cornucopia of information. I'll go out and measure my 1150 front this weekend and make notes in my manual.
 
Thanks

I have the GS1100E at 30.75"
so the delta is: 32.5"-30.75"=1.75"
An approximation is
(19"-16")/2=1.5" but you have to add a little for the fork rake take off a bit for the taller 16" profile.
 
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