Paging Bear...

Utter bollocks. I don't remember Champ having major problems with his
9R calipers and I didn't have any problems with mine. Just because the
brakes on yours were crap it doesn't make all of them the same.

 

I'm suspicious that the master cylinder has something to do with it. The
Gixxer 6 pots *might* be greatly improved by the right choice of
cylinder/ratio.

'Hog

 

Actually, this is a very, very good point. I've improved brakes
*immensely* in the past, simply by changing the m/cylinder.

 

'Hog said...

The master cylinder used by both Suzuki and Kawasaki is the same item,
with the same bore/ratio when they fit either 4 or 6 pots.

 

They can grip with the power of half a dozen marketing departments.

 

If it's the same bore ratio then all that means is the total piston
displacement is the same on 6 as on 4. To get a better bore ratio (more
hydraulic leverage) you'd need to either use a smaller bore M/C or a
larger total slave cyl displacement. Problem with that is, if you go too
far, the slightest wibbly wobble on the slave cyls (being knocked back
by a warped disc, or loose mountings) means that the first stroke of the
M/C might all be used up simply getting the slave pistons back to where
they should be and not doing any gripping of the disc. Not good.

 

This here explains it...

http://www.motorcycledaily.com/13november02radialbrakes.html

I've not had first hand experience of them, so don't know if he's
talking bollocks or not, but it certainly makes sense to hold the
calipers more firmly, especially the longer multi-pot jobbies around
now. Indeed, the advent of multi-pots almost dictates the positioning of
them and necessitates a lower mounting arm.