Gl1500 front brake problem


Information and questions on GL1500 Goldwings (1988-2000)
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basher
Posts: 56
Joined: Fri Apr 06, 2012 4:20 pm
Location: scarborough United Kingdom
Motorcycle: 1988 gl 1500 trike

Gl1500 front brake problem

Postby basher » Wed Jun 22, 2016 5:13 pm



Hi,currently having an issue with the front brake on my 1988 trike.
Have added another brake hose and a double banjo to the front master cylinder trying to run both front brakes from the handle bars,have bled them with a vacuum bleeder till there is no air left in the system but when I pull the lever there is nothing happening.
So my question is is the master cylinder up to doing both brakes or have I done something wrong again.
Cheers Bash



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RBGERSON
Posts: 2625
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: Gl1500 front brake problem

Postby RBGERSON » Wed Jun 22, 2016 5:45 pm

The master i built to handle one caliper I am not positive but pushing fluid into two caliper maybe more than it can handle volume wise..If the lever is all the way back and you have nothing that would be my first thought assuming it really is bled well.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

CrystalPistol
Posts: 267
Joined: Wed Mar 10, 2010 9:07 pm
Location: Shenandoah Valley of Virginia
Motorcycle: 1985 GL1200A
1997 GL1500SE Lehman Trike

Re: Gl1500 front brake problem

Postby CrystalPistol » Thu Jun 23, 2016 5:46 pm

basher wrote:Hi,currently having an issue with the front brake on my 1988 trike.
Have added another brake hose and a double banjo to the front master cylinder trying to run both front brakes from the handle bars,have bled them with a vacuum bleeder till there is no air left in the system but when I pull the lever there is nothing happening.
So my question is ... is the master cylinder up to doing both brakes or have I done something wrong again.


Running both front calipers off the single handlebar mount master cylinder is done on many 1500s converted to trikes. It will work but it also will result in more travel as twice the fluid must be moved. If you are not getting something, there's a problem somewhere.

I would bleed again starting at the front MC to make sure the MC is ready .... then go down to the calipers. I would likely get a helper to "pump & hold" while I released the bleeder and then repeat a few times, doing one side and then the other. The brake hoses are likely about same length so probably makes little difference which you start with.
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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Gl1500 front brake problem

Postby WingAdmin » Thu Jun 23, 2016 9:14 pm

Keep in mind that not only does it have to move twice the fluid, but you're also doing twice the work - so you need to squeeze harder to get the same amount of braking.

97Aspy
Posts: 36
Joined: Tue Oct 13, 2015 3:46 pm
Location: Rochester Pa.
Motorcycle: 1997 GL1500A Glacier white

Re: Gl1500 front brake problem

Postby 97Aspy » Fri Jun 24, 2016 4:35 am

Came across this article on Champion trike kits. Scroll down to page 9. There is a 3 lb residual valve installed at the master cylinder. This might be what you are missing. Double banjo is at the right brake caliper.

http://www.madnesscycle.com/uploads/5/2 ... nstall.pdf

Good luck
Rick




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