Stainless brake lines and DOT 5


Information and questions on GL1100 Goldwings (1980-1983)
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tunaboy
Posts: 144
Joined: Sun Aug 05, 2012 8:46 pm
Location: Milwaukee, Wisconsin
Motorcycle: 1980GL1100 NICE!

Stainless brake lines and DOT 5

Postby tunaboy » Sat Feb 02, 2013 9:18 am



I plan to go to stainless lines and wonder if I should go to dot 5 fluid? If yes should I swap lines and flush the system with a solvent before adding the dot 5?. Is dot 5 worth the$$ or should I just use dot and flush the brakes every 1-2 years? What solvent would I use if needed?



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SteveB123
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Location: Winchester, Ontario, Canada
Motorcycle: 1982 1100I, 60A Poorboy, MSD coil

Re: Stainless brake lines and DOT 5

Postby SteveB123 » Sat Feb 02, 2013 9:28 am

tunaboy wrote:I plan to go to stainless lines and wonder if I should go to dot 5 fluid? If yes should I swap lines and flush the system with a solvent before adding the dot 5?. Is dot 5 worth the$$ or should I just use dot and flush the brakes every 1-2 years? What solvent would I use if needed?


If you're boiling the current fresh DOT4 fluid in your Goldwing, you should discusss brake upgrades with your race engineer!
DOT5 is for museum pieces (IMO), being non-hydroscopic....but it also isn't compatible with any other brake fluid.

Better to upgrade your bleeders to speedbleeders and change the fluid, rather than install silicone brake fluid. Doesn't matter what fluid you put it, it will still get dirty during use, so it still needs to be changed out periodicly.

2 cents.

cheers
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

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trashtruck
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Location: albany, New York
Motorcycle: 1982 gl1100 interstate

Re: Stainless brake lines and DOT 5

Postby trashtruck » Sat Feb 02, 2013 9:30 am

i'll be the first to admit that i don't know as much as i should about dot 5. is it better than dot 3 or 4? i don't know. my personal experience tells me that if it aint broke, don't fix it.
WHAT IS THE SPEED OF DARK?

tunaboy
Posts: 144
Joined: Sun Aug 05, 2012 8:46 pm
Location: Milwaukee, Wisconsin
Motorcycle: 1980GL1100 NICE!

Re: Stainless brake lines and DOT 5

Postby tunaboy » Sat Feb 02, 2013 9:50 am

Where do I buy speedbleeders and what is the right thread size for my 80 1100?

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tfdeputydawg
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Re: Stainless brake lines and DOT 5

Postby tfdeputydawg » Sat Feb 02, 2013 11:01 am

Using DOT 5 in a DOT 3 or DOT 4 system without proper flushing will cause damage to the seals and cause brake failure. DOT 5 brake fluid is not compatible with anti-lock brake systems. DOT 5 brake fluid absorbs a small amount of air requiring care when bleeding the system of air.
Just me but, I see no reason to go DOT 5 + stainless lines?????
Nor, do I understand the 2year service suggestion??? How often do you change the brake fluid in your cage???????
I do change brake/clutch fluid when I need new brake pads as well as servicing the calipers at that time.

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thrasherg
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Re: Stainless brake lines and DOT 5

Postby thrasherg » Sat Feb 02, 2013 11:22 am

I would not go to DOT5 personally, but just for information, you can get DOT5.1 brake fluid that is compatible with the older mineral brake fluids.this means you don't have to be as thorough removing the old fluid out of the system before you put the new in. I have found Dot4 to be adequate for all my riding (including when I used to race (RG500)), whilst dot5 is less prone to absorbing water, I found the brake system lost some feeling and ended up changing the DOT5 fluid every 6 months to get the feeling back (on the hydraulic clutch) where as the DOT4 only needed changing every couple of years.. Maybe there was something wrong with my clutch, but I would stick to a good DOT4 mineral brake fluid.

Gary




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