Front brake lines from series to paralell


Information and questions on GL1100 Goldwings (1980-1983)
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alastair.kj
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Front brake lines from series to paralell

Postby alastair.kj » Sat Apr 18, 2015 5:30 pm



So I've decided to buy some braided brake lines for my 81 and was thinking that I would like to use two individual lines in the front, from MC straight to calipers, rather than having them run in series, over the fender.

I'm just wondering if there is any reason why I shouldn't do this.
Pros and cons?
I think I'll like the look of it and I imagine it creates less chance for trapped air.

Any advice/comments on the subject would be greatly appreciated.

Thanks,
Alastair



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Aussie81Interstate
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Re: Front brake lines from series to paralell

Postby Aussie81Interstate » Sat Apr 18, 2015 6:55 pm

If you go the braided lines - that is a bonus - eliminating 2 more joins in the brake hydraulics will lessen the problems when bleeding the brakes. Plus the braided give you a better feel and more confidence in your brakes IMHO.

sportsfreaked
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Re: Front brake lines from series to paralell

Postby sportsfreaked » Sat Apr 18, 2015 9:45 pm

Curious how do you plan on doing this? Are you going to replace the master cylinder I assume with one with 2 outlets for each line? If you are please let us know what you are using and how it turns out. Sounds like a good idea if it will work. Thanks. Ed
Thanks to all who answer and help. It is greatly appreciated!
Ed

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Aussie81Interstate
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Re: Front brake lines from series to paralell

Postby Aussie81Interstate » Sun Apr 19, 2015 2:00 am

Normally adding two outlets from the master cylinder requires a double banjo bolt with 3 crush washers.

:)

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WingAdmin
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Re: Front brake lines from series to paralell

Postby WingAdmin » Mon Apr 20, 2015 12:54 pm

Aussie81Interstate wrote:Normally adding two outlets from the master cylinder requires a double banjo bolt with 3 crush washers.

:)


There's already one of those on the splitter above the fender. You could just lose the splitter, run the lines to the master cylinder, and repurpose the splitter's double banjo bolt to hook both lines to the master cylinder.

It's seen on the left side here:


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alastair.kj
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Re: Front brake lines from series to paralell

Postby alastair.kj » Mon Apr 20, 2015 2:56 pm

Aha! Thank you.

To answer the question as to how I'll do this:

I have not formed a plan yet. This post is simply the beginning of my research.
I was hoping some people on here may have had some experience in doing this.

Any and all input towards the actual procedure (materials needed, steps to take and whatnot) will be greatly appreciated.

Thanks again

sportsfreaked
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Re: Front brake lines from series to paralell

Postby sportsfreaked » Mon Apr 20, 2015 4:18 pm

I guess my question would be what is the reason for doing it? Is there an advantage to doing it that way?
Thanks to all who answer and help. It is greatly appreciated!
Ed

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alastair.kj
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Re: Front brake lines from series to paralell

Postby alastair.kj » Tue Apr 21, 2015 8:29 am

My thought was that there would be fewer connecting parts, therefore less nooks and crannies to have air bubbles get trapped in. I also thought it might look a little different (just for kicks) and potentially be easier to install.

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sleepy3103
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Re: Front brake lines from series to paralell

Postby sleepy3103 » Wed May 13, 2015 9:23 pm

Been a while since anyone replied to the post but I did my new stainless lines the way you are thinking. Here are some pictures

I use the the rubber grommets from the old lines.

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WingAdmin
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Re: Front brake lines from series to paralell

Postby WingAdmin » Thu May 14, 2015 9:16 am

It looks good, almost like it was meant to be that way! How are you liking the stainless braided lines? I loved the difference they made to my GL1100.

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alastair.kj
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Re: Front brake lines from series to paralell

Postby alastair.kj » Thu May 14, 2015 9:27 am

sleepy3103, thank you so much!! That's exactly what I want to do. Any pieces/parts I may need, besides the lines themselves that I might not have thought of??

Cheers,
Al

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CMReynolds1
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Re: Front brake lines from series to paralell

Postby CMReynolds1 » Thu May 14, 2015 12:49 pm

Very, very nice. I love the look. I have used stainless lines and love the positive feel they give back to the brake handle. All sponginess is gone.
Ride Safe,
Taz


TF 116, RivRon 512, Can Tho, S. Vietnam, 8/66-/9/68, GM(G)2

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sleepy3103
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Re: Front brake lines from series to paralell

Postby sleepy3103 » Thu May 14, 2015 1:05 pm

Wingadmin I haven't ridden it yet but I'm guessing it will be much better. I'm Also coming from one front caliper and crappy rear linked system so it should be amazing compared to that. I'll be riding it in the next couple of days here after I get the oil changed and coolant flushed. I'll let you know how they work.

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sleepy3103
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Re: Front brake lines from series to paralell

Postby sleepy3103 » Thu May 14, 2015 1:09 pm

alastair.kj wrote:sleepy3103, thank you so much!! That's exactly what I want to do. Any pieces/parts I may need, besides the lines themselves that I might not have thought of??

Cheers,
Al


I would get a new double banjo bolt and all new crush washers. Also If you have a unlinked system and you put a new brake line on the rear you are fine but If you have a linked system like the 83 you need a different thread banjo bolt for the rear master cylinder. Its a finer thread than the rest of them, you need a 10x1mm banjo bolt for it.

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sleepy3103
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Re: Front brake lines from series to paralell

Postby sleepy3103 » Thu May 14, 2015 1:19 pm

I might do a right up on how to delink the brakes and run parallel stainless lines if I get a chance but I didn't get pictures of the whole thing so I might have to improvise.

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alastair.kj
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Re: Front brake lines from series to paralell

Postby alastair.kj » Thu May 14, 2015 5:37 pm

sleepy3103 wrote:
alastair.kj wrote:sleepy3103, thank you so much!! That's exactly what I want to do. Any pieces/parts I may need, besides the lines themselves that I might not have thought of??

Cheers,
Al


I would get a new double banjo bolt and all new crush washers. Also If you have a unlinked system and you put a new brake line on the rear you are fine but If you have a linked system like the 83 you need a different thread banjo bolt for the rear master cylinder. Its a finer thread than the rest of them, you need a 10x1mm banjo bolt for it.


my brakes are not linked so that's a bonus for me. Is this banjo bolt bike specific or generic? Can it be picked up at an auto/bike shop or a fastener store? Same question goes for the crush washers???
Thanks so much for the help.

Al

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sleepy3103
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Re: Front brake lines from series to paralell

Postby sleepy3103 » Thu May 14, 2015 6:58 pm

The regular banjo bolts are 10x1.25. Contact lopeha55 on the forum and he can hook you up with the HEL lines I got, they are really nice. You get a discount through him. They now the sizes and will give you banjo bolts and crush washers. You can check them out at http://www.h-e-lusa.com/ and check the for sale forum on here that he has up for the brake lines here viewtopic.php?f=9&t=11422 if you need any more info let me know. The only other thing I would recommend is to measure them and tell them the exact sizes you want. My rear line is way to long so I had to run it around a few things to take up the extra room.

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alastair.kj
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Re: Front brake lines from series to paralell

Postby alastair.kj » Fri May 15, 2015 11:40 am

Oh ok, great. I've already been in contact with him. I'm just now waiting til I have the cash. So all the bolts and washers will come with the lines, that's awesome.
Thanks for the help!
If you or anyone ever does a write up on a brake line swap and/or changing from series to paralell, let me know!

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sleepy3103
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Re: Front brake lines from series to paralell

Postby sleepy3103 » Fri May 15, 2015 1:28 pm

No problem. Just let him know when you order them that you need a 10x1.25 thread double banjo bolt, 4 10x1.25 regular banjo bolts, and 11 crush washers and they should include it all. I might have paid for the double banjo bolt but I don't think so.

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sleepy3103
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Re: Front brake lines from series to paralell

Postby sleepy3103 » Tue May 19, 2015 11:49 pm

WingAdmin wrote:It looks good, almost like it was meant to be that way! How are you liking the stainless braided lines? I loved the difference they made to my GL1100.


Got to do some riding finally with the new brakes lines and all the calipers and rear master rebuilt. Wow what a difference! The front brakes feel like a sport bikes brakes now. The rear sucked at first because the guy that had it before me put some grooves in the rear rotor by riding with worn out brake pads, but once they wore in they work great to.




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