YZF750 upper triple clamp options

[captaudi]

Fellow two wheeled enthusiasts,

Putting together the bits and bobs for the YZF750 conversion. I have a very clean set of forks, lower triple, wheels, axle and fender. Time to obtain an upper triple clamp and modify to suit What are my options? If I had done this a couple years ago I would have bought the LSL conversion. It looks like I can use a YZF1000 Ace and follow the Mark Rittner formula (bore to 50mm, shorten switch mounts etc.), I saw something about using a 92-95 FZR1000 part. Is it a flat (non-batwing) triple with 50mm bores?

Inquiring minds want to know.

Daniel

[captaudi]

Anyone?

[Pat Conlon]

On my YZF750 forks, LSL made a replacement top triple clamp for the YZF750 that was for the handlebar conversion, that's what I used along with the FZ-1 bars.

[captaudi]

Pat, unfortunately the LSL kit is NLA. I even reached out to LSL Germany. I saw a post where someone talked out using the FZR1000 (95ish) part, I was wondering if it was a direct swap. Obviously I would have to add the risers to use the FZ1 bar. The Ace part is available and I have access to a Bridgeport and a boring head, so I can go that route. Using the mill comes with baggage I don't need. If there was a bolt in part it would be ideal.

Thanks,

[Millietant]

The simple answer is to use the YZF top yoke/clamp and just drill two holes in it so that you can bolt a set of 2001-2005 FZ1 risers to it.

No need to buy an expensive kit, or go boring out the fork holes.

Just this afternoon I helped another owner (one of the friends from our recent Europe tour) fit a 1992 FZR 1000 RU front end into his 89 3CV FJ. We cut down the mounting legs for the ignition switch and cut the bottom half of the loop around the switch. On the top yoke and it all dropped on perfectly, with the steering lock fully operational. We'll make up the little lock-stop bracket tomorrow.

[captaudi]

Dean,

The issue is using the YZF750 upper triple clamp is it is a batwing design. The area where you would mount the FZ1 clamps is sloped, not flat. The LSL kit was flat and came with the risers. It looks like ABM makes/made a kit similar to the LSL piece. There is one on eBay right now that I am looking at. What I was wondering is does the FZR1000 piece work? Is the bore for the fork sliders 50mm?

https://www.ebay.com/itm/275585042659?_skw=ABM+YZF750&itmmeta=01K0M5WA06W6HBDSGYR4EJJJ44&itmprp=enc%3AAQAKAAAA4FkggFvd1GGDu0w3yXCmi1dCKEZKVGyG7lPL3nfic31ZRyic55fzLI9ImV%2B7pYDsfrcdjlN8aLGol%2BH8cBxuPckGE9Vtn6suubKyxC7%2Fo8zkMXxRoVBH0A1TfgLfgECDBLzc8tFrrEdFy3hYfztSIMSrJYFqBjohMWO1cWc4gXQPfK%2Fiod8eu2tGUMNrS6CsxtRqM1yG4OphNBYhQ%2FtYDqLoSNqvyw2QHS9BA3fkUrVzwqZilV%2BoBdUDYjEplTUNmzs72v0HB8Gr6DNpWrxms28WCIUW1BhWBlk%2FJgodDJwU%7Ctkp%3ABFBMnqDxhYVm

This is what I am looking at.

[captaudi]

Or directly from ABM Approx $255.00 USD

https://ab-m.de/en/motorcycle-accessories-shop-details/109/top-yokes-adapters-separately/250/superbike-top-yoke

[Pat Conlon]

The ABM looks good. What will be your plan for the ignition switch?

[captaudi]

 

That's phase 2 of figuring this out. The ABM kit should be by design the same as the LSL in that regard. Able to take the factory YZF750 switch. How did you handle it?

[Pat Conlon]

The LSL top triple had the ignition switch offset to the left. I had to shim the barrel of the lock to fit in the larger diameter hole on the top triple.
Of course, with the offset, I don't have a fork lock anymore...no big deal.

I'll try and snap some pictures.

Here ya go:

[captaudi]

Pat,

 To be honest I can't even tell what you did. Looks like a 100% factory install.  Did you have to modify the mounting lugs on the underside? Or did the switch mount up at the correct height? I have never once used my lock, so no loss there.

Daniel

[Pat Conlon]

Thanks Daniel...
I think that's the best compliment...a finished mod that looks oem.

I didn't need to modify the lower mount on the ignition switch. You see how the top of the switch barrel pokes thru the LSL mount ring? So the barrel length is not critical...it ends up where it ends up...no need to mess the lower mount.