Author Topic: Front brake left town...  (Read 1986 times)

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#20

Offline Paul2bikes

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Re: Front brake left town...
Reply #20 on: 25 November, 2020, 07:18:21 AM
*Originally Posted by UncleChuckles [+]
The bike has been ridden off-and-on for the past 2 years or so.  It sat for perhaps 6 months and I was going to take it out.  Started well, but front brake lever pulled all the way to the bar.  No response after frequent and enthusiastic pumping.  No ride!! It was fine last time I rode it. Thoughts?

Was there some reason for the bike to be laid up 6 months ago?

Have any of you had a Master Cylinder give up like this? Very scary if it could happen on the road, all of a sudden no brakes, with no warning.  :005:


Last Edit: 25 November, 2020, 08:14:29 AM by Paul2bikes
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

#21

Offline UncleChuckles

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Re: Front brake left town...
Reply #21 on: 25 November, 2020, 10:57:19 PM
The bike wasn’t laid up — it was the rider being distracted from the important things (riding).  It sounds like flushing the system would be the easiest first step.  That said, I did try the absolute easiest suggestion of putting a large rubber-band on the lever and holding it to the bar over night. Of course it didn’t work, but hope seems to spring eternal to the promise of simple solutions (it seems to be a “guy thing”). Thanks to you all for your thoughtful comments.  More to come, I’m sure

#22

Offline Grouchybastard

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Re: Front brake left town...
Reply #22 on: 26 November, 2020, 01:21:48 AM
*Originally Posted by Paul2bikes [+]
Was there some reason for the bike to be laid up 6 months ago?

Have any of you had a Master Cylinder give up like this? Very scary if it could happen on the road, all of a sudden no brakes, with no warning.  :005:


I've never heard of, or experienced a sudden catastrophic brake failure. Driving or riding.   Most of the time it's a gradual degradation of the system. Daily operation makes it easier to detect any changes.  If you're not riding it on a regular basis, it would be pretty easy not to notice any changes.


#23

Offline Rhead

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Re: Front brake left town...
Reply #23 on: 26 November, 2020, 04:08:05 PM
I agree with zulu. It has nothing to do with the calipers at all. How could it? I had it happen to a brand new ducati that I was test riding. Was a bad master cylinder (brembo) Only other time that I experienced this is with my lincoln mkz. (ford fusion etc) Pedal goes down to within an inch of the floor (2 yrs now) replaced the master twice. no better. Turns out to be stuck valves in the abs unit, caused by using dot 3 instead of dot 4 from the factory. After numerous accidents, ford finally did a recall, but at over a year later,
  they still claim to not have the parts yet.  :027:

#24

Online ZuluTiger

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Re: Front brake left town...
Reply #24 on: 26 November, 2020, 10:09:31 PM
Never mind me. I always agree with Rhead. He's the SOURCE for all things technical given his experience. I do give Indy some (a lot) of credence but he's just grumpy right now. And Paul will throw down some garbled Scottish lingo but he's our voice of reason, delivered with subtle innuendo. These people are talent. Follow the (understated pipers playing a bag pipe tune in the background) and you'll be good. I predict a cheap but labor (labour) intensive fix centered around seals and cleaning.   

#25

Offline Rhead

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Re: Front brake left town...
Reply #25 on: 27 November, 2020, 12:34:39 AM
 :031:

#26

Online indytiger1050

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Re: Front brake left town...
Reply #26 on: 29 November, 2020, 04:11:46 AM
Gee,, didn't know about the ba humbug issue..  Guess I'll work on it.


Looking back, heck I didn't even say anything to be grumpy..   WTF..
Last Edit: 29 November, 2020, 04:15:45 AM by indytiger1050
Support the forum.   :031:

#27

Offline Paul2bikes

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Re: Front brake left town...
Reply #27 on: 29 November, 2020, 07:49:03 AM
Well I was hoping rhead would pop in with his vast experience of these bikes, but seems even his 200k mile Tiger 1050 hasn't had a master cylinder failure.  :087:

Maybe the OP's bike just ran out of fluid via a leak from........  :005:
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

#28

Online tiggersteve

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Re: Front brake left town...
Reply #28 on: 29 November, 2020, 09:38:44 AM
*Originally Posted by tiggersteve [+]
No leaks says to me the master cylinder at fault ???
seals gone and flowing back ???

My post page 1  :164:

*Originally Posted by tiggersteve [+]
Ok guys If there is no leak I don't see how it can be at the caliper end,
the pistons operate in separate chambers and unless I'm mistaken the only seal is to prevent fluid leaking past the piston and outside the caliper,
having no pressure and no leak indicates to me it's an internal seal at the master cyl end ???
please enlighten me

Also my post before the 'almighty' chimed in

just saying  :015:  :164:

#29

Offline Paul2bikes

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Re: Front brake left town...
Reply #29 on: 29 November, 2020, 09:59:19 AM
 :745: C'mon UncleChuckles, stop chuckling & get amongst it, then tell us what caused the problem, as you can tell, we're only guessing with little experience of similar, so not much to go off.
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.