help brakes

[Dominic Clegg]

Just spent all day and a lot of brake fluid on trying to fit twin brakes to the front of my bike. i have a 1994 ducati 600 ss. i got off ebay a 600ss disk and the right hand caliper from a 750ss i also got a twin bolt to fit my master cylinder so i could run two line from it. but after an age of trying several ways to bleed the system the brakes were still very spongy. so i tested each line and each caliper in turn and when i did that they were fine rock solid. so what am i doing wrong, do i need to fit a different master cylinder. i.e one off a 900ss or from a 916.

im real ****ed off i through this was going to be a simple job

pleases help

[twpd]

Errrrrr..... you have upgraded your master cylinder as well, haven't you?

[Jools]

Originally posted by Dominic Clegg
do i need to fit a different master cylinder. i.e one off a 900ss or from a 916.

im real ****ed off i through this was going to be a simple job

pleases help

Most likely, yes.

[twpd]

Ooops. That will teach me to speed read. :lol:

[Dominic Clegg]

so i need to upgrade the master cylinder too crap got to spend more money

any one got a spare master cylinder

[Rattler]

Not sure of the setup of your brakes, but you will need to upgrade the master cylinder too, in fact you probably should do this first and not the second disk.

On some of the m/cyls there's a bleed nipple on here too, thereby you can get the air from out of the top of the pipes.

Air will want to rise in the fluid and therefore will sit at the top. Which makes it trickier to get the air bled out of system.

When fitting new lines it can take a while to get the air out of the system. If you don't have a bleed valve on the m/cyl, and if you can, get the m/cyl as low as possible, by either removing the clipon its fitted to, or fitting it to a spare clipon or handlebars (so you can pump the lever).

I'd get a 996/748 type m/cyl and fit that. Try to fit the second caliper and line etc, good luck.

Brakes are not to be left to chance, if you're uncertain of getting these to operate correctly, seek pro help.

Tim

[Rob B]

Originally posted by Dominic Clegg
so i need to upgrade the master cylinder too crap got to spend more money

any one got a spare master cylinder


Yep, see other thread.

Rgds, Rob

[Iconic944ss]

Strangely enough, I have a spare 900ss m/c.

U2U or Email me if needs be, please.

Frank