Rear wheel mod

[yamaha fj rider]

The FZ1 or R1 swingarm swaps are great mods but the wheels don't match the front. If you change the front wheel to match the rear, you lose the speedometer drive. A lot of things to consider. Has anyone tried to machine the front wheel from FZ1 or R1 to take FJ speedometer drive? What is the width of a FZ1 or R1 swingarm where the wheel goes. Maybe you could use the Thunderace wheel with the FZ1 or R1 swingarm. I have a Thunderace swingarm and will measure it later to post the wheel width. Hope this helps.

Kurt

[yamaha fj rider]

Over compensating a bit eh? I guess I need to get used to that being an 86/87 owner. No need to fix perfection...

Yes Yamaha did that for you 89/90 and 91 on.  

Kurt

[axiom-r]

Hey Kurt,

I looked hard at trimming the mechanical drive to adapt to an R1 fork and wheel and we concluded it was going to be difficult on both sides of the drive.  It could be done but what a hassle.

Tim

The FZ1 or R1 swingarm swaps are great mods but the wheels don't match the front. If you change the front wheel to match the rear, you lose the speedometer drive. A lot of things to consider. Has anyone tried to machine the front wheel from FZ1 or R1 to take FJ speedometer drive? What is the width of a FZ1 or R1 swingarm where the wheel goes. Maybe you could use the Thunderace wheel with the FZ1 or R1 swingarm. I have a Thunderace swingarm and will measure it later to post the wheel width. Hope this helps.

Kurt

[Tripod]

Metallic Gay........looks brown to me.........hell I got no idea....any experts out there what do you think what colour is this bike....

Teabag

[FJscott]

Thanks guys for your help I have a 88 FJ1200 that I am restoring and I want to change rear wheel I like the look of the YZF1000 Thunderace in this picture also like the colour will do some research regarding what colour this is.

Cheers
Teabag

Looks like Thunderace or 1st gen FZ1. I compared it to my FZ1 and appears you do have the thunder ace. My FZ1 brake rotor is much smaller in diameter

Scott

[fj1289]

The FZ1 or R1 swingarm swaps are great mods but the wheels don't match the front. If you change the front wheel to match the rear, you lose the speedometer drive. A lot of things to consider. Has anyone tried to machine the front wheel from FZ1 or R1 to take FJ speedometer drive? What is the width of a FZ1 or R1 swingarm where the wheel goes. Maybe you could use the Thunderace wheel with the FZ1 or R1 swingarm. I have a Thunderace swingarm and will measure it later to post the wheel width. Hope this helps.

Kurt

ThunderAce front rim -- only rim that matches the first gen R1 axle and brake rotors and still machined for a speedo drive.  You do have to machine quite a bit (8mm? 12mm?) from the inside of the left fork tube.  It's no issue for strength since it is basically a wheel spacer cast in as part of the fork lower.

[fj1289]

Forgot to add -- the FZ1 swingarm mounts the same as the ThunderAce swingarm (4mm off each side)

[Harvy]

Forgot to add -- the FZ1 swingarm mounts the same as the ThunderAce swingarm (4mm off each side)

Chris, from memory mine was 2mm off either side (4mm total).

Harvy

[fj1289]

Forgot to add -- the FZ1 swingarm mounts the same as the ThunderAce swingarm (4mm off each side)

Chris, from memory mine was 2mm off either side (4mm total).

Harvy

Harvy, I'll defer to you on that -- been long enough now I don't remember for sure!

[fj johnnie]

 2 mm per side. 4 mill total for mine. FZ 1 . Harvy is correct.