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What is going on with my brakes?

  • Thread starter Thread starter alkswheetinjur
  • Start date Start date
A

alkswheetinjur

Guest
Replaced my lever and master cylinder/lever with an ebay special (I know). Took awhile to bleed but I got the job done and was able to enjoy riding the end of the good weather here in PA. About a week ago I was walking past the old GS in the garage when I noticed the brake line was pinched at an awkward angle and had moisture building up on the hose. Any ideas?
 
and another sorry I'm terrible at using this forum
 

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Is that "moisture" brake fluid? I'm thinking its a cheap rubber hose and the fliud damaged / softened it. It would explain the sudden kink also.
 
I believe it is brake fluid almost sweating out, no obvious holes or cracks. If I was to replace just the hose what kind should I be looking for? (what kind isn't going to collapse on itself)
 
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I think I'd be looking for a combined reservoir/master cylinder in order to eliminate the hose completely.
 
The first thing that came to mind for me was... If they used the wrong material on that hose, I wonder what they used on the inside???
 
Do you know what brand the M/C is? I'm looking for one differently configured from my stock one, and don't want that one.....
Im going to try the route of a different OEM unit.
 
dorkburger said:
Is that "moisture" brake fluid? I'm thinking its a cheap rubber hose and the fliud damaged / softened it. It would explain the sudden kink also.
Click to expand...

I am going to go with this explanation.


dorkburger said:
Do you know what brand the M/C is? I'm looking for one differently configured from my stock one, and don't want that one.....
Im going to try the route of a different OEM unit.
Click to expand...

Most sport bikes use a remote reservoir like the one shown in OP these days. If you can find the size you need (5/8" bore for most double caliper set ups on GS's) there should be dozens to choose from on fleabay.

For instance: http://www.ebay.ca/itm/1996-Suzuki-...ash=item2ef60159ab:g:OrEAAOSwx2dYCNKd&vxp=mtr


A question for OP: in the first picture you posted is your brake line cracked where it emerges from the banjo bolt cover?


Mark
 
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Yes the outer rubber is cracking in places but the steel braiding inside is all intact. New lines will be going on before spring.
 
Think the name of the seller sums it up "Topfashion2000" sells more woman's stuff than bike stuff.
as said before get a combined master cylinder and reservoir, junk the chinnese stuff.
What was wrong with your original master cylinder?
 
Looks like they used fuel line, most of which is not compatible with brake fluid. Brake fluid is surprisingly damaging stuff to a lot of materials.

I had to make one of these cheapie M/Cs work a while back, and after a few failures I did some testing with several samples of tubing from my stash dunked into brake fluid overnight. I ended up using a chunk of translucent yellow Tygon tubing normally used for fuel lines. In order to form the tight U-bend without kinking or collapsing the soft tubing, I pushed the Tygon tubing over a piece of copper 1/4" tubing and dipped it into boiling water for a minute. A quick dunk in cold water to cool, and the "U" shape was permanent.
 
fastbysuzuki said:
Think the name of the seller sums it up "Topfashion2000" sells more woman's stuff than bike stuff.
as said before get a combined master cylinder and reservoir, junk the chinnese stuff.
What was wrong with your original master cylinder?
Click to expand...

Nothing was wrong with it just wanted to go with a different style lever. I'm also running pods, header wrap and chopped fenders if your looking for something to criticize. :D
 
alkswheetinjur said:
Nothing was wrong with it just wanted to go with a different style lever. I'm also running pods, header wrap and chopped fenders if your looking for something to criticize. :D
Click to expand...

some what touchy, I only asked "what was wrong with your original master cylinder"
 
dorkburger said:
Do you know what brand the M/C is? I'm looking for one differently configured from my stock one, and don't want that one.....
Im going to try the route of a different OEM unit.
Click to expand...


Ive always had tremendous success with RC51 (SP1) Honda units - very high quality, 19mm piston , cheap on eBay

used them on race bikes, road bikes, with 2-6 piston calipers ........ great feel with progressive action and non wooden feel- A huge upgrade on hayabusa's , SRAD's,super hawks and bandits
 
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