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GL1100 Brakes

637 Views 3 Replies 3 Participants Last post by  grayglennsr, 
grayglennsr
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I was reading about the unified braking system on the 1983 and 84 goldwings. The one where the brake pedal at the right foot controls both the rear brake and one of the two front brakes also. The hand brake only controls one half of the front brake.

My question is why can't we install that system on a 1980 GL1100 Interstate?

It seems to me that its just a matter of running the one brake line to the front caliper and installing the junction down by the foot pedal isn't it?
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Hatchetman
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I dont think its that simple. Although you can copy the design & add it to your bike, I think there is a perportioning valve to control the brake pressure because your front brakes do around 70% of your overall braking. this is due to the weight transfer to the front wheel during braking.

You need to see the braking chapter in a repair manual from one of those bikes to see what is different and why it is.

I say go for it though, It's a good idea!
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OnaWingAndaPrayer
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Yes there is a pressure control valve which seperates the front disc from the rear disc . Also the front caliper which is connected to the rear brake , has 2smaller pistons . Your 80 has a single large piston in each front caliper . Its a quite well engineered system .

If you just connect one front disc to your 80 rear system , You need to know if your rear master cylinder can move enough fluid volume to feed 2 calipers.

You need to know in a panic stop , will the pressure which can lock the rear tire then unexpectedly lock the front tire .

Once you split your 80 front system , will the hand lever overpower the now single caliper and cause it to lock up to easily .





Proceed with caution .
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grayglennsr
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great information from everyone.

I'll have to check into it and see. This sounds like a future project for over the winter maybe... I want to see the numbers.

As far as the rear master cylinder goes I figured to change that out too. The question of over powering the front caliper tho with too much pressure I hadn't considered at all. Something for me me think about, that's for sure...
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