It is currently Mon Nov 20, 2017 12:03 am

All times are UTC





Post new topic Reply to topic  [ 12 posts ] 
Author Message
 Post subject: Front brake master cylinder
PostPosted: Tue Sep 19, 2017 11:48 am 
Offline

Joined: Tue Jul 24, 2012 8:54 am
Posts: 261
Location: Broome, Western Australia
model: 907 I.E.
year: 1992
Hi everyone.

I have just replaced the old rubber brake lines with HEL stainless lines, and found a little problem in the process. Without the lines connected to the calipers, brake fluid runs out constantly without the brake lever pulled in. Makes it easy to bleed the air out, but doesn't seem right to me? I'm thinking the brake master cylinder needs a kit put through it. Does anyone know the Brembo part number of the kit? Or failing that, the Ducati part number?

I'm also thinking a radial brake master might be a reasonable upgrade, with a remote reservoir. Has anyone taken the plunge and fitted one?

Cheers.
Nick.


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Wed Sep 20, 2017 3:56 am 
Offline
paso grand pooh-bah
User avatar

Joined: Wed Dec 05, 2007 12:35 am
Posts: 1586
Location: Newzealand
model: 906 Paso
year: 1990
The fluid should run straight thru as you describe Nick . With the piston assy at the normal resting position the port from the resiviour to the cylinder should be open and the fluid will flow , if you pull the lever in a bit ( thus closing that port ) the flow should stop. Im pretty sure I have the correct Brembo kit somewhere so I will look it out and get the part # off it for you . Those kits are also available from MG's , just need to know the diameter. Some of the whole master cylinder assys are cheap enough to just put a whole new one on there :)
Hamish

_________________
I wish I was young again............Id be heaps smarter than last time


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Wed Sep 20, 2017 11:06 pm 
Offline

Joined: Tue Jul 24, 2012 8:54 am
Posts: 261
Location: Broome, Western Australia
model: 907 I.E.
year: 1992
Hi Hamish.

It seemed a bit odd the fluid ran through. I did look at a few master cylinders on eBay. The you beaut, straight from China are beer money, but quality could be an issue? I have a British Princess sitting next to the 907 and it has a radial brake master (hence the second question). I thought the 907 had reasonable brakes, but you don't realise how much brakes have evolved until you take the Ducati for a run, and then jump on the other. Savage is a word that come to mind.

The 907's brakes are better with the HEL brakes lines, but still a little to go. It has been having a rest for about 12 months, so all the little rubber bits have dried out. The first time I went out on it after replacing the lines, one of the fork seals started leaking big time. Everything on the LHS is drenched in oil. So that is next, new brake pads and see what happens.

Cheers.

Nick.


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Thu Sep 21, 2017 4:46 pm 
Offline

Joined: Thu Nov 29, 2007 2:38 am
Posts: 259
Location: UK
model: 907 I.E.
year: 1990
On mine, I had a couple of scares i.e. lever touching the handlebar trying to stop at a traffic light; at the time I though the issue was with the fluid so I replaced it and after bleeding it several times I decided the MCs where crap and replaced them with the Serie Oro from a 916.

Some purists will say "I ruined the bike's Originality", but I believe it is a mod that could have been made at the time of the bike production, therefore... yes, it is not original, but is not out of place.

With the serie oro the bike brakes as it should, looks nice and feels very nice.

Of course I also replaced the calipers, Serie oro all the way.


Attachments:
P1030730r.jpg
P1030730r.jpg [ 80.95 KiB | Viewed 290 times ]
P1030729r.jpg
P1030729r.jpg [ 91.62 KiB | Viewed 290 times ]
Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Thu Sep 21, 2017 8:24 pm 
Offline
paso grand pooh-bah
User avatar

Joined: Wed Dec 05, 2007 12:35 am
Posts: 1586
Location: Newzealand
model: 906 Paso
year: 1990
They look to be the same as the ones on my old SS. I don't think that originality is lost if the mods can be reversed , its not like you had to cut off the old caliper mounts and weld new one on

_________________
I wish I was young again............Id be heaps smarter than last time


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Fri Sep 22, 2017 4:41 am 
Offline

Joined: Tue Jul 24, 2012 8:54 am
Posts: 261
Location: Broome, Western Australia
model: 907 I.E.
year: 1992
angelix wrote:
On mine, I had a couple of scares i.e. lever touching the handlebar trying to stop at a traffic light; at the time I though the issue was with the fluid so I replaced it and after bleeding it several times I decided the MCs where crap and replaced them with the Serie Oro from a 916.

Some purists will say "I ruined the bike's Originality", but I believe it is a mod that could have been made at the time of the bike production, therefore... yes, it is not original, but is not out of place.

With the serie oro the bike brakes as it should, looks nice and feels very nice.

Of course I also replaced the calipers, Serie oro all the way.


Yep, this is exactly what I would like to fit to the 907.

Some would say you may have ruined the bikes originality, but when you are planted in the front of someone's bonnet 'cause you couldn't stop doesn't do a whole lot for originality either!

The hunt for a set of M/C's is now on.

Cheers.

Nick.


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Fri Sep 22, 2017 10:33 am 
Offline
paso grand pooh-bah

Joined: Thu Jun 21, 2007 12:00 am
Posts: 1420
Location: Gothenburg, SWEDEN
model: 907 I.E.
year: 1991
Replaced my clutch w a M695 one.
Bit fiddly w fitting idle lever, otherwise bolt-on.
And original look.
Simpler model ones fr this millenia possible fit.

_________________
Gert

907 I.E. -91
M900 -97


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Sat Sep 23, 2017 3:50 am 
Offline
paso grand pooh-bah
User avatar

Joined: Wed Dec 05, 2007 12:35 am
Posts: 1586
Location: Newzealand
model: 906 Paso
year: 1990
New or 2nd hand Nick ? Im pretty sure I still have the clutch side .... and there was no issue fitting it over the choke ( Im assuming that's what Gert means by idle lever ) as the SS had the same handle switch assy as the Paso . Apart from looking a bit more "tech " ( gold , remote rez and adjustable has got to be hard to beat :D ) than the standard ones I couldn't see them making any real difference ..... as long as the overall pump/lever ratios were the same :)

_________________
I wish I was young again............Id be heaps smarter than last time


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Sat Sep 23, 2017 11:52 am 
Offline
paso grand pooh-bah

Joined: Thu Jun 21, 2007 12:00 am
Posts: 1420
Location: Gothenburg, SWEDEN
model: 907 I.E.
year: 1991
On a 907, it`s an idle lever, it just lifts the butterfly abit.
It does not restrict air to TB`s.

_________________
Gert

907 I.E. -91
M900 -97


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Sat Sep 23, 2017 6:53 pm 
Offline
paso grand pooh-bah
User avatar

Joined: Wed Dec 05, 2007 12:35 am
Posts: 1586
Location: Newzealand
model: 906 Paso
year: 1990
Tamburinifan wrote:
On a 907, it`s an idle lever, it just lifts the butterfly abit.
It does not restrict air to TB`s.

Yeah your right :) , I keep forgetting that the 907 is injected :banghead:

_________________
I wish I was young again............Id be heaps smarter than last time


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Sun Sep 24, 2017 12:27 am 
Offline

Joined: Tue Jul 24, 2012 8:54 am
Posts: 261
Location: Broome, Western Australia
model: 907 I.E.
year: 1992
Hi Hamish.

I found a set of M/C's off a 996. Worth a few Bob, but you get that. After 12 months in storage, they are going back in again for another 3, so all the good ideas will have to wait again.

Cheers.
Nick.


Top
 Profile  
Reply with quote  
 Post subject: Re: Front brake master cylinder
PostPosted: Sun Sep 24, 2017 8:36 am 
Offline
paso grand pooh-bah
User avatar

Joined: Wed Dec 05, 2007 12:35 am
Posts: 1586
Location: Newzealand
model: 906 Paso
year: 1990
I stripped mine and got all the brake fluid out and re assembled with brake assy lube . Just reasoning that moisture would get into any residual fluid and cause corrosion

_________________
I wish I was young again............Id be heaps smarter than last time


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 

All times are UTC


Who is online

Users browsing this forum: Baidu [Spider] and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to: