Topic: DUAL-DISC GUYS - What kinda Splitter/Y-Blocks did you use ?

[ProTeal55]

As the topic states I am looking for options when it comes to splitting front brake lines for a dual-disc setup.
I am sourcing parts to install a dual-disc setup on my CB450, and I am kinda stumped on how I should go about splitting the lines.
Suxs I just spent $45 to get a line made from HEL, but what can I do ? (I could do a double banjo at the master but that would be nasty looking)..

As everything else having to do with this bike I am looking for something that is "light" looking, small, racey, etc...
I have a request out for a factory DOHC CB750 splitter, but I think that might be too big/clunky for this little bike. I have a splitter on my CB750 from a Guzzi, But I cant seem to find another one, and the guy I got that one from is no longer in business.

So (if you would be so kind) post some pics of what you used and let me know where you got it...
As always, any and all help is much appreciated....

* * * Don't forget Mods Vs. Rockers III is less than a month away (6/16/07-Chicago, IL)..* * *

[Soos]

I got mine off a 1978? 1979? KZ1000.
I had to make a custom alluminum mount bracket to get it to fit, as the hole spacing is a tad different(about 3/8 off if i rember right)
The hoses sit that way due to me putting a half twist in the cables, looks a bit better than them just sagging there IMO.
Sorry about the quality, it's 2am right now, and I have no light under the carport, so it was shoot, and hope for the best.

l8r

[Soos]

And yeah it looks a bit big on my front end(i'm assuming you're looking for a smallish splitter), but it helps hide from view the air horn compressor mounted on the bottom of my tripple trees.

l8r

[Steve F]

Joe,
I just split the lines right at the master cylinder and don't have the "junction" you're talking about.  Two lines directly to the calipers.  Just used a double banjo bolt on the m.c.

[Rhonda750F]

I have 2 other options for you.  If you want some kind of splitter use one from a F2/3 model 750.  I'm sure you could easily find one around here.  Or do what modern sport bikes do.  Both my buddies bikes(gixer and a busa) have one line from the master that runs to the right caliper and a double banjo with the other line running over the fender to the other caliper.
I'll see if I can get a pic so you can better visualize it.
Paul Z.

[dagersh]

Both my buddies bikes(gixer and a busa) have one line from the master that runs to the right caliper and a double banjo with the other line running over the fender to the other caliper.

PT,

My '03 Le Mans has the splitter set up like this as well.  I just really noticed it this weekend when I was out riding. 

If you like the Splitter used on your 750 you might want to try:

www.mgcycles.com

www.motointernational.com

Either one of these guys can probably help you find the piece you are looking for.  I would think that with the Guzzi's Integrated brake system, there is no shortage of line splitters.

Hope this helps.

Gersh

[bwaller]

Two options. Splitter is from a 500 Interceptor, and dual lines from the master.

[dagersh]

Bwaller,

Those dual lines look great on that front end!

Gersh

[RSV12K]

I second the idea of running two lines from the master cylinder and not bothering with the splitter. That's a race set up, which is what I think you're looking for. I think it looks good too.

I've also seen set ups on modern sport bikes where you run one line from the MC to first caliper and using a double banjo bolt, run another line over the fender to the second caliper. That way it looks good too.

You probably know this..you'll probably need a banjo switch to trigger the brake light. HEL and lots of other places sell them for $12-$15

[sandcastcb750]

Can't you use a longer banjo bolt, put two lines together?

Double discs stop like modern bikes.......you never want to go back to one disc on a CB750 SOHC

[ProTeal55]

Thanks for all the good ideas guys, and please keep them coming...
I for one do not dig putting two banjos off the master (just looks like an afterthought to me)..
I def. need to get s splitter, with a single inlet and dual outlets..
The search continues 

Don't forget Mods Vs. Rockers III is less than a month away (6/16/07 / Chicago, IL)..

[Bodi]

You could use a SOHC4 switch block with a double banjo, single line from master to block. I don't remember if the 450 had such a switch unit or used a lever switch.
Can one get a triple banjo bolt? With just crush washers and a crown nut you could join 3 lines and it would look pretty sweet.
The crossover line idea is also good and looks OK if done well but how to bleed it?

[CrisPDuk]

I've just run a dual banjo bolt from the standard fit block mounted on the bottom triple on my 550, doesn't look to obtrusive in my opinion

Mounting the split on one of the calipers is fine in theory, but in practice I wouldn't recommend it, the second caliper in the line is a complete PITA to bleed properly

[HondaMan]

1970s roadracing:
I just center-drilled and, cross-drilled 2 times, a longer bolt, then turned off the threads, sort of like the stock bolt, in two places (used a Dremel with cutoff disc). Then I stacked the two banjos of two stock brake hoses, one on top of the other, with one of the sealing washers in between the 2 banjos. I don't have any digital pix of it, but it's not hard to imagine it.   

Then, after racing, I used it on the road for 55,000 miles like that. The lever travel was just less than twice stock, the controllability excellent (except on ice) and no fade ever, even with 600+ lbs aboard and 90+ MPH downhill canyon rides on trips. And, of course, many 1-up mountain race-with-self days... 

I gave it up when I went on an unsprung-weight reduction campaign, then sold it when I got married and needed $$$, to another aspiring roadracer.

To do it over on a 450 or 750 today, I would use the smaller ones from the CB500 chassis with custom mounts, to reduce the unsprung weight. The stopping power will be quite adequate, even for repeated 110 MPH slows and stops.

[pyro139]

1981 cb650c had dual front if can get parts off a cb650c

[Blaize]

Why don't you just turn a cb750 splitter upside down? I presume you will use a modern M/C with the brake light switch built in so you can throw out the stock switch and you are in business. I did mine this way, works fine. I can't imagine you will find anything any smaller.

[ProTeal55]

Thats the ticket ! I actually have my stock CB450 brake switch sitting in my toolbox..
Surprised I never thought of it (it happens)..
Is the stock/factory brake light pressure switch the same size as a banjo bolt ?

[Blaize]

Yup, I have two of those splitters laying around and they all work fine. The threads are correct and the holes are deep enough.

[cben750f0]

dam thats a good idea!!, whish i had of thought of that, i ended up wireing my brake light to the switch on my master, then double banjo at the Y block, no i can go back and flip it over and all will be sweet.... thanks mate!!!


 good luck with it pro..

peace

[bgfootball67]

Check out this link:

http://www.spieglerusa.com/cfm/customline.cfm?type=940

Still have not figured out how to post pics yet, have not had enough time to go through the info on FAQ.  But while looking for stainless lines I found this line and thought it may work for you?  Looks pretty cool!