Brake calipers


Information and questions on GL1000 Goldwings (1975-1979)
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1fastgl1100
Posts: 131
Joined: Mon Apr 22, 2013 5:33 pm
Location: Ocala, Florida
Motorcycle: 1983 GL1100A and 1982 GL1100A Modified

Brake calipers

Postby 1fastgl1100 » Sun May 22, 2016 9:56 am



I have been struggling with the brake calipers on my 82 goldwing.
I have rebuilt all 3 twice now.
Right after the rebuild they all seem to work great, but within weeks they start getting spongy. I bleed them but they remain spongy.

Someone told me to replace all 3 calipers and lines with modern aftermarket parts (my front master cylinder is off a Valkery)
Does anyone know of good aftermarket calipers that will fit an 82 gl1100a?



SnoBrdr
Posts: 328
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

129K Original Owner

Re: Brake calipers

Postby SnoBrdr » Mon May 23, 2016 7:15 pm

1fastgl1100 wrote:I have been struggling with the brake calipers on my 82 goldwing.
I have rebuilt all 3 twice now.
Right after the rebuild they all seem to work great, but within weeks they start getting spongy. I bleed them but they remain spongy.

Someone told me to replace all 3 calipers and lines with modern aftermarket parts (my front master cylinder is off a Valkery)
Does anyone know of good aftermarket calipers that will fit an 82 gl1100a?


A brake system is considereda "closed" system.

That means that if all parts are working properly that there is NO way for air to enter or escape the system.

Obviously there is a issue somewhere in your system.

Why is there a different master on the bike? Bigger piston?

Are the hoses original, one or more could have collapsed.

But that wouldn't explain how air is getting into the system.

BTW, there are no such thing as after market calipers for any of these bikes that I have ever seen.

Other years may fit but sometimes it requires you to change the whole front end as the mounting holes are not the same.

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1fastgl1100
Posts: 131
Joined: Mon Apr 22, 2013 5:33 pm
Location: Ocala, Florida
Motorcycle: 1983 GL1100A and 1982 GL1100A Modified

Re: Brake calipers

Postby 1fastgl1100 » Mon May 23, 2016 7:57 pm

Air is not getting into the brake system. The system gets spongy after a rebuild and remains spongy after being bled.
I put master cylinder from a Valkery on after the old one was damaged (a Valkery is essentially a goldwing 1500).
Brake lines are newer factory lines (purchased new in 2013 from honda).
I have 2 GL1100 goldwing but only this one is giving me issues with the brakes.

SnoBrdr
Posts: 328
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

129K Original Owner

Re: Brake calipers

Postby SnoBrdr » Mon May 23, 2016 8:11 pm

1fastgl1100 wrote:Air is not getting into the brake system. The system gets spongy after a rebuild and remains spongy after being bled.
I put master cylinder from a Valkery on after the old one was damaged (a Valkery is essentially a goldwing 1500).
Brake lines are newer factory lines (purchased new in 2013 from honda).
I have 2 GL1100 goldwing but only this one is giving me issues with the brakes.


If what you said is true, you didn't fully bleed the system.

They can be a real pain to bleed.

There are a few trucks you can try, often the culprit is in the crossover.

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1fastgl1100
Posts: 131
Joined: Mon Apr 22, 2013 5:33 pm
Location: Ocala, Florida
Motorcycle: 1983 GL1100A and 1982 GL1100A Modified

Re: Brake calipers

Postby 1fastgl1100 » Fri May 27, 2016 2:36 pm

Spent the day working on front brakes. I bleed both and went for a ride, still spongy.

I clamped off the left line and took a ride, still spongy.
Swapped clamp to the right line and took another ride, good solid brakes.

I will be looking at replacing all the brake lines with braided stainless steel as soon as I can afford it. In meantime I am checking the banjo fitting(s).

SnoBrdr
Posts: 328
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

129K Original Owner

Re: Brake calipers

Postby SnoBrdr » Fri May 27, 2016 2:52 pm

1fastgl1100 wrote:Spent the day working on front brakes. I bleed both and went for a ride, still spongy.

I clamped off the left line and took a ride, still spongy.
Swapped clamp to the right line and took another ride, good solid brakes.

I will be looking at replacing all the brake lines with braided stainless steel as soon as I can afford it. In meantime I am checking the banjo fitting(s).


Make sure none of the copper washer are missing.

Old Fogey
Posts: 724
Joined: Fri Oct 30, 2009 2:09 am
Location: Glasgow Scotland
Motorcycle: 1976 GL1000
1979 GL1000
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Re: Brake calipers

Postby Old Fogey » Mon Jun 06, 2016 6:27 pm

Just to say, I have 82 GL1100 duel puck calipers and master cylinder on my GL1000. Stainless lines also. I can squeal the tyre from virtually any speed. I certainly wouldn't like any more brake on those skinny tyres.
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'Impossible' is just a level of difficulty! The only stupid question is the one you didn't ask first!

SnoBrdr
Posts: 328
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

129K Original Owner

Re: Brake calipers

Postby SnoBrdr » Mon Jun 06, 2016 6:53 pm

Old Fogey wrote:Just to say, I have 82 GL1100 duel puck calipers and master cylinder on my GL1000. Stainless lines also. I can squeal the tyre from virtually any speed. I certainly wouldn't like any more brake on those skinny tyres.


Did you swap out the whole front end to use those ?

Old Fogey
Posts: 724
Joined: Fri Oct 30, 2009 2:09 am
Location: Glasgow Scotland
Motorcycle: 1976 GL1000
1979 GL1000
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Re: Brake calipers

Postby Old Fogey » Mon Jun 06, 2016 7:40 pm

SnoBrdr wrote:
Old Fogey wrote:Just to say, I have 82 GL1100 duel puck calipers and master cylinder on my GL1000. Stainless lines also. I can squeal the tyre from virtually any speed. I certainly wouldn't like any more brake on those skinny tyres.


Did you swap out the whole front end to use those ?


On my 76, although I started the conversion with the wire wheels, I found the rims were too corroded to be unusable. So I went for Comstars, swapped the early sliders for the late 78-79 ones and then it is almost a bolt up job. The axle is the same, the axle nut and the spacer has to be changed to the late version and the speedo drive it on the opposite side, so that has to be changed also. The front fender bottom stay has to bent to accommodate the bigger calipers.
I have also put an 1" long spacer on top of the fork springs, use a 10wt fork oil and a fork brace. The fork brace makes a huge difference to the feel of the bike at slow speeds.

http://s298.photobucket.com/user/Scabby ... t=6&page=3

I am just about to do the same to my 79.
Image Image

'Impossible' is just a level of difficulty! The only stupid question is the one you didn't ask first!

sfruechte
Posts: 193
Joined: Tue Mar 09, 2010 12:53 pm
Location: La Crosse, WI
Motorcycle: 1977 GL1000

Re: Brake calipers

Postby sfruechte » Tue Jun 07, 2016 2:30 pm

Does the lever get harder if you pump it? It might be the master cylinder. The front ones are easy to bleed on my GL1000, gravity does it all.




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