FZRSupport: the FZROnline Archive

Can anyone here that has R1, R6, 636, YZF 600 or whatever for forks on their FZR please post setups and what had to be done including who did the work, what years and if they had pressed, new triples, uppers, etc.....

Maybe some pics as well. Trying to get the best info out to everyone and Im thinking of doing the front end swap.

+1

That would be good for the Wiki too.

This may be wrong but from what I have seen, 1999 R1 forks MAY work with stock FZR wheel/axle.

Im not sure but I would like to keep the 3 spoke like the 99-02 r6 and fzr wheel if possible.

Mark's looking to spend more money. Start mentioning it to the wife now as something you would like to do eventually so she doesn't get too angree when more parts start to show up.

cad600 wrote:Mark's looking to spend more money. Start mentioning it to the wife now as something you would like to do eventually so she doesn't get too angree when more parts start to show up.

Ahahaa!!! So true! You didnt tell us what swap you did and how.

Yeah this would be a nice collection of data for sure.

I think the best swap is mine. Mine has the least amount of hassle and everything works like stock when it is done.

Mine is a 98 GSXR 750 front end with a ducati 748/916 front wheel, rotors and speedo.

Mine handles like it is on rails and I still have my stock speedo. Not to mention the fact that the stock key lock bolts in place and once I welded a little material onto my frame, the steering lock works too. The lower bump stops only need to be shaved a little to make it work like stock too. All the other front ends have compromises, mine has none. Mine works like it was stock on the bike. No one else to my knowledge has a setup that works with the stock speedo.

In order to do it, you must press out the old stem, weld material onto the FZR steam and press it in the GSXR triples. Then make a spacer for the top triple.

Noah

I would disagree about the GSX-R front end being the way to go. I'm sure it's fine, don't get me wrong. Problems do arise though when you start looking for parts and forget you are using a duc front wheel and need those bearings when all you are thinking is I have gsx-r front end.

The R1 swap is just as easy but you will need to replace the speedo with something. Granted, when you start swapping front ends and tails etc, most people are going for a more modern look anyway so they don't mind swapping the speedo too. I have an 02-03 front end on my bike. Had the stems swapped and a spacer made for the top. The steering stops do need to be cut down a hair on the left side I believe (if you are sitting on the bike). You will also need a spacer for the ignition if you want it to sit flush in the top triple. A length of small diam pipe from sears,etc works fine. That's it. A crazy amount of adjustability and hugs like no other.

thatkid wrote:I would disagree about the GSX-R front end being the way to go. I'm sure it's fine, don't get me wrong. Problems do arise though when you start looking for parts and forget you are using a duc front wheel and need those bearings when all you are thinking is I have gsx-r front end.

The R1 swap is just as easy but you will need to replace the speedo with something. Granted, when you start swapping front ends and tails etc, most people are going for a more modern look anyway so they don't mind swapping the speedo too. I have an 02-03 front end on my bike. Had the stems swapped and a spacer made for the top. The steering stops do need to be cut down a hair on the left side I believe (if you are sitting on the bike). You will also need a spacer for the ignition if you want it to sit flush in the top triple. A length of small diam pipe from sears,etc works fine. That's it. A crazy amount of adjustability and hugs like no other.

Stems swapped and spacer made for the top? Can you post some pics plz. What type swapped and so forth.

Im trying to gather as much info for the WIKI and this is an awesome subject. Since I dont have any projects right now im concentrating on gathering all info for this to post and maybe Ill pick one for my fiz.

the YZF750 and 91+ FZR 1000 USD's need the steering stem swapped and the steering bump stomps ground down and use the stock speedo

'06 R6 inverted forks. I went with having a custom lower triple made to take the stem. Also need a spacer for the top triple at the stem as the diameters are way different. After that, it's a bolt on deal. But you do need a lot of parts....forks, triple, wheel, brakes, clip-ons.... There are some hidden problems with this one. The key switch won't bolt in the normal way. I still need to figure out steering stops. And the Radial master cylinder hits the fairing stay and therefore limits the turning radius. Overall, I like the set up and would definately do it again.

cad600 wrote:'06 R6 inverted forks. I went with having a custom lower triple made to take the stem. Also need a spacer for the top triple at the stem as the diameters are way different. After that, it's a bolt on deal. But you do need a lot of parts....forks, triple, wheel, brakes, clip-ons.... There are some hidden problems with this one. The key switch won't bolt in the normal way. I still need to figure out steering stops. And the Radial master cylinder hits the fairing stay and therefore limits the turning radius. Overall, I like the set up and would definately do it again.

Where did you get the custom triple made?

mszilves wrote:

cad600 wrote:'06 R6 inverted forks. I went with having a custom lower triple made to take the stem. Also need a spacer for the top triple at the stem as the diameters are way different. After that, it's a bolt on deal. But you do need a lot of parts....forks, triple, wheel, brakes, clip-ons.... There are some hidden problems with this one. The key switch won't bolt in the normal way. I still need to figure out steering stops. And the Radial master cylinder hits the fairing stay and therefore limits the turning radius. Overall, I like the set up and would definately do it again.

Where did you get the custom triple made?

Most likely from Modking.

What I dont get is why we need to use the FZR stem. Do they not use the same bearing size, are they longer, whats the deal?

The fzr stem is dwarfed by newer stems. Bearings are very different. Vortex I think it is makes an fzr stem you could buy.

thatkid wrote:The fzr stem is dwarfed by newer stems. Bearings are very different. Vortex I think it is makes an fzr stem you could buy.

Hi,
some where on this forum I posted that stem swapping was not actually required, just stem removal. see the original post by Tony Foale (a leading euro-frame designer for sundry racers and now consultant to Segway ) who used a simple threaded rod and plugs to hold the bearings in their cups . which is after all the sole purpose of the stem !


QUOTE:-
Back when I had a business making chassis, we often had to adapt different
fork yokes and we also made our own magnesium yokes.  In all cases I did
away with a stem altogether and just fitted stubs into each yoke.  Tension on
the bearings was provided by a  rod threaded at each end, locked into the
lower yoke and which passed through a hole in the upper where it was
tightened with a nyloc nut.  The rods where either 10 or 8 mm dia. depending
on size of bike.  This simple and easy to make solution worked well and
saved some weight.

The added stiffness of a complete stem is quite minor when compared to the
alignment stiffness of the yokes clamped onto the fork tubes.

This subject has come up on the list before.  The late Hoyt didn't like the
idea but it worked fine in practice which is what engineering is about.

Regards

Tony Foale
info@tonyfoale.com
http://www.tonyfoale.com

(UNQUOTE)