[andyb]

So the formula is the area of the calliper pistons divided by the area of the master cylinder.

A std fireblade is around a figure of 34.5. An nc 30 is around 31.5.

Brake levers are about feel.

Too great a number and you have a hard lever, but no feel.

Too low a number and you have loads of feel but of course too much travel!

I would suggest from what your saying Frank, your master cylinder is too small a bore to cope with your 6 pots. ( what a std 16mm ducati master cylinder bore?)

Thats easy to see when you think of the amount of fluid required to move all those extra calliper pistons.

I bet your ratio is low 20's.

Brembo 19/18 master cylinder to sort me thinks.......