Bandit Alley

MODEL SPECIFIC => SUZUKI BANDIT 600 thru 1200 - AIR/OIL COOLED TECHNICAL => Topic started by: banditmarc on May 11, 2008, 02:48:42 PM

Title: front brake seems soft
Post by: banditmarc on May 11, 2008, 02:48:42 PM

hi all
have just put a set of 6 pots on my bandit 1200
however the front brake seems a lot softer than before, adjusted right in i can squeeze on the brake lever under heavy braking and bring the lever about 1cm away from the bars.
im using the standard bandit 1200 master cylinder with hel lines
i have bled the system thru numerous times and its adjusted to the number 1 setting
the seals are all fine and im not leaking fluid anywhere
would i need to upgrade my mastercylinder? if so what to?
cheers
marc

Title: Re: front brake seems soft
Post by: Red01 on May 12, 2008, 03:55:06 AM

You shouldn't need to change the master, this is a fairly common swap on 1G's.  Sometimes getting that last bit of air out can be a major PIA... does it pump up at all?  That'd be the clue there's still a little air in the system.
A power bleeding may be in order, which usually means a trip to a shop (shudder).

Title: Re: front brake seems soft
Post by: banditmarc on May 12, 2008, 04:05:58 AM

yea it does pump and i have got some pressure

Title: Re: front brake seems soft
Post by: Cruisecontrol on May 12, 2008, 04:29:01 AM

Have you ridden it yet?

I had major problems when I changed to a set of GSX-R calipers. Bled the brakes about a dozen times and they remained very spongy. Took it out for a ride (being extremely careful) and within about 10 minutes they were as good as gold. I dare say all the bumps on the road cleared out the last stubborn air bubbles...

Title: Re: front brake seems soft
Post by: banditmarc on May 12, 2008, 06:07:57 AM

yep ridden it
still get the same result
do i change the master cylinder?
if so what to?

Title: Re: front brake seems soft
Post by: Red01 on May 13, 2008, 04:06:41 AM

Quote from: banditmarc on May 12, 2008, 04:05:58 AM

yea it does pump and i have got some pressure

There's your answer... if it pumps up, there's still air in there!

Title: Re: front brake seems soft
Post by: ippo on May 13, 2008, 11:16:51 AM

If you want all air out you can lock brake for hole night by cable tie.

Title: Re: front brake seems soft
Post by: pmackie on May 13, 2008, 12:07:01 PM

As ippo said, it sometimes helps to put pressure on the system and leave it for an extended period. I sure sounds like you still have some air in the system.

Title: Re: front brake seems soft
Post by: speedwaymaniac on May 16, 2008, 04:46:43 PM

another thing to try is pumping brake fluid up from the caliper! Sounds bizarre but i think it's quite effective from what i've been told... worth a try if nothing else is working.

(if you do try this let me know as i've been thinking about it myself, just haven't needed to do it yet)