Pics, mods, dyno graphs plus the 17" rear wheel swap report.
Check it out!
This is Frans
'87 FZX 750.
One more happy Fazer owner, don't you think? :-)))
Here is an update on Frans Fazer
- White Power front springs
Way to go, Frans!
Your Fazer looks better and better everyday. Keep one wheel down.
And another update on his Fazer. These dyno sheets speak for themselves...
And check out the
new fairing Frans did himself for his Fazer. Does this look mean enough for
And after a ZXR 750 17" rear wheel conversion it looks like this
Notice the YZF750 stock exhaust can. Frans says it smooths the powerband on the low-end especially when runing a Dynojet.
THE COMPLETE REPORT ON FRANS 17" REAR WHEEL SWAP
is the complete report Frans sent me, plus the pics he took of it. I hope this
is of help to anyone wanting to do a 17" wheel swap. Frans is working on a
17" front wheel too, we'll wait for an update on that...
17" wheel conversion with a ZXR 750 type J wheel width 5,5" for tire 180/55 ZR17
i took all the stock parts of the kawasaki wheel including axle, all spacers/bushes and the complete brake set of the kawasaki, if you use the fzx brake you will have trouble with disk diameter and touching the inside of the wheel (i dont know for sure on this wheel but Ricardos ZZR wheel scraped at the stock caliper)
first i had somebody made a axle/pipe with 25 mm outside and 17,5 mm inside the length of this pipe is 240 mm ( that is the space you got between the swing legs!!!!)
this pipe goes inside the wheel and should be machined exactly to the measure of the wheelbearings or else you will have freeplay on the bearings.
the pipe is the part on pic2 that has all the small parts on it. the axle on pic2 is the stock fzx/fazer axle. the parts on pic 2 and 4 is everything you need to fit the wheel inside the swing.
now you could best forget the above, i will also this winter;-))
for everyone who is not willing to choose the pipe setup or do not trust this setup:
take the stock swing and modify it from a 17 mm axle (stock) into a 25 mm axle. this is also a lot of work but you can take the stock kawasaki 25 mm axle, i think it is a better setup and i will change it this winter.
parts you dont have to change/machine etcetera:
parts you have to change/machine etcetera:
have to machine the place were the brake disk is bolted to 5 millimeters smaller, so the brakedisk will go 5 millimeters to the inner side of the
this has to be done very accurate and it needs a large machine bench to have the
wheel in it.
the sprocket carrier:
sprocket carrier is best to machine in a bench with a claw with 4 grips or else
you will not get it centered.
you have to get the bearing for 4,5 millimeters deeper into the sprocket carrier this is a little problem because the wall that keeps the bearing from falling through the carrier gets rather thin ( i think 4,5 millimeters deeper is the max you can do.)
because you get the bearing deeper in the carrier you have to machine the bush between carrier and wheelbearing (see on the axle in pic8 and the 2nd part from the right in pic 4) smaller on the larger side for exact the space that you lowered the bearing, i my case i lowered the bearing for 4,5 millimeters and i also made the spacer from 10 milimeters to 5,5 millimeters.
then you make a spacer with a thikness of 6 millimeters and inner hole of 25 millimeters and conical from the inner bearing ring to about 50 millimeters (part on the right on pic2 and 4)
you can see the parts mounted on the axle on pic 2 and in the wheel on pics 7 - 8 - 9 and 10.
the spacer between wheel and caliper mount:
it is also a stock kawasaki part and has to be machined to exactly 20 millimeters from outside to outside.(part right beside the caliper mount on pic 2 and 4) .
because the brake is on the downside you have to weld a mount for the torque bar on the downside of the swing.
See other pics below.
these mods were done, Frans did a 17" front wheel and 4pot calipers
modifications, along with a FZR1000 engine!
List of total modifications
Rearwheel 17" x 5.5J zxr 750 type J
Check out the latest upgrades Frans made to his Fazer. ZXR400 front end, FZR1000 rear end and a monoshock converted frame.
This is Frans at the track showing what Fazers are capable of.
said it before and I say it again: