front brake lever excessive travel


Information and questions on GL1000 Goldwings (1975-1979)
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winguyjo
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front brake lever excessive travel

Post by winguyjo »



1977 gl1000 ... my front brake lever will move to within 1/2" of the handgrip during normal application and will travel 1/2" before any noticeable braking happens. the lever contacts the piston the whole way, so it's not a case of the piston hanging up in its bore. will not "pump up" at all, so i don't think there's air in the system and not a trace of a leak anywhere. your thoughts are most welcome.


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dingdong
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Re: front brake lever excessive travel

Post by dingdong »

Time to bleed and replace the fluid with fresh. After a while the brake fluid collects moisture which compresses. Unlike brake fluid.
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winguyjo
Posts: 410
Joined: Sat Aug 11, 2018 9:26 pm
Location: b.c. Canada
Motorcycle: wing1 : 1982 gl1100 interstate; resurrection complete. SOLD
wing2 : 1980 gl1100 interstate; resurrection complete. SOLD.
wing3 : 81gl1100i frame/82gl1100a engine/81cb900 bits. resurrection complete. naked. SOLD.
wing4 : 1977 gl1000 black w/ blue pinstripes; resurrection complete. SOLD
wing5 : 1977 gl1000 black w/gold pinstripes; nearly roadworthy when purchased, NOW RIDING.
wing6 : 1975 gl1000 blue; SOLD

Re: front brake lever excessive travel

Post by winguyjo »

you may be onto something there. i try to remember to make notes when i am working on these things but i dont always do that. also, shifting my attention from one bike to another confuses things further. i don't see in my notes where i changed the brake fluid on this bike so that will be my next move.
thanks.
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WingAdmin
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Re: front brake lever excessive travel

Post by WingAdmin »

Could also be swelling brake lines, which happens over time. A new set of braided stainless brake lines will make a huge difference if that's the case.
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winguyjo
Posts: 410
Joined: Sat Aug 11, 2018 9:26 pm
Location: b.c. Canada
Motorcycle: wing1 : 1982 gl1100 interstate; resurrection complete. SOLD
wing2 : 1980 gl1100 interstate; resurrection complete. SOLD.
wing3 : 81gl1100i frame/82gl1100a engine/81cb900 bits. resurrection complete. naked. SOLD.
wing4 : 1977 gl1000 black w/ blue pinstripes; resurrection complete. SOLD
wing5 : 1977 gl1000 black w/gold pinstripes; nearly roadworthy when purchased, NOW RIDING.
wing6 : 1975 gl1000 blue; SOLD

Re: front brake lever excessive travel

Post by winguyjo »

the ancient brake lines were replaced with new (wish i had gone stainless braided).

3 successive nights of tying off the brake lever, releasing, pumping, re-tying, etc. has got the travel down to where i think it is good. the issue now is no decent "grab". i actually thought these brakes were o.k. until i rode a bike with GOOD brakes; these brakes are far from o.k. Just received new front and rear pads yesterday so will see how it feels after they are installed.
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winguyjo
Posts: 410
Joined: Sat Aug 11, 2018 9:26 pm
Location: b.c. Canada
Motorcycle: wing1 : 1982 gl1100 interstate; resurrection complete. SOLD
wing2 : 1980 gl1100 interstate; resurrection complete. SOLD.
wing3 : 81gl1100i frame/82gl1100a engine/81cb900 bits. resurrection complete. naked. SOLD.
wing4 : 1977 gl1000 black w/ blue pinstripes; resurrection complete. SOLD
wing5 : 1977 gl1000 black w/gold pinstripes; nearly roadworthy when purchased, NOW RIDING.
wing6 : 1975 gl1000 blue; SOLD

Re: front brake lever excessive travel

Post by winguyjo »

adding a bit of closure to this thread ...

after successive nights of tying off the front brake lever, and resting a weight on the rear brake pedal, i noticed a very small leak at the banjo bolt to the front master. tightened that, installed all new brake pads (the new brake lines were already installed) then took it for a test ride. i was immediately disappointed ... i felt that if there was any improvement at all it might be just in my head.

it was a few days before my next ride and again, the impovement seemed negligible, if not outright imaginary ... these brakes just would not grab with authority.

took it out again today and now, there is a definite grab to the brakes. i no longer have to squeeze HARD. I can get the front end to dive and the rear feels much improved as well.

the moral of the story is ... new pads have to seat in to the rotors. who knew ? :oops:
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Joneszy
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Re: front brake lever excessive travel

Post by Joneszy »

Good point about brake wear in Winguyjo. An interesting article on the EBC site:
https://ebcbrakes.com/articles/motorcycle-bed-in/

I think a lot of folks expect optimum performance right out of the box and that is not the case
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winguyjo
Posts: 410
Joined: Sat Aug 11, 2018 9:26 pm
Location: b.c. Canada
Motorcycle: wing1 : 1982 gl1100 interstate; resurrection complete. SOLD
wing2 : 1980 gl1100 interstate; resurrection complete. SOLD.
wing3 : 81gl1100i frame/82gl1100a engine/81cb900 bits. resurrection complete. naked. SOLD.
wing4 : 1977 gl1000 black w/ blue pinstripes; resurrection complete. SOLD
wing5 : 1977 gl1000 black w/gold pinstripes; nearly roadworthy when purchased, NOW RIDING.
wing6 : 1975 gl1000 blue; SOLD

Re: front brake lever excessive travel

Post by winguyjo »

i was one of those. lesson learned, and thanks for the link. now i know how to seat-in new brakes . :)


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