This applies to the 5” ZX6R Rear
wheel. And using a 170/60x17 Macadam 90X tyre.
No need to machine any part of the
wheel itself, all machining is done to the sprocket carrier,
eccentrics and spacers. With the wheel installed centrally I had
11mm chain line run out which I overcame by using a ZX750A front
sprocket which is 6mm offset and got the other 5mm from the
sprocket carrier.
Spacers
The sprocket side Spacer needs to
be 6mm wide, the Disc side is 42mm overall between the s/arm and
the Bearing .Keep in mind the caliper mounting arm which will
have to be accounted for within this 42mm dimension.
Sprocket carrier
You will need to remove the seal
and machine the outer face back to within about 2mm from the
bearing circlip; it will have to be able to clear the swinging
arm when the 6mm spacer is in place.
The bearing is a stock 6205, best
bet here as the seal wont fit now is to get a bearing with
either a shield or seal built in.
The sprocket mounting faces need
to be machined down by 5mm, when added to the 6mm offset
sprocket achieves the 11mm to get the chain inline.
I removed the M10 studs and used
ordinary M10X1.5 bolts to mount the sprocket, the studs have a
fine 1.25 pitch threads for the nuts but 1.5mm pitch in the
carrier so stock bolts will fit.
Eccentric adjusters
These will need to be bored out to
take a 20mm spindle.
Torque arm
A flat torque arm will have to be
made as the tubular one will rub the tyre! I used 25x6 stainless
flat bar and drilled lots of holes in to lighten it.
530 or 630?
Hmm that old chestnut!...well
simple really the 630 will fit but will rub the inner face of
the air filter housing! Not good if you want to run a stock
filter fine for a K&N though, if stock filter is what you want
then 530 it will have to be.
