double lies from MC or y junction?? new to sportbike racing so looking for help.. when i look at kits like galfer or goodridge their top of the line seems to be y setup
both work very well. 2 individual lines from the mc, or a single that "T's" off to the calipers. Some say there is a slight difference in feel due to volume of fluid (or something like that) .. but both work well and are widely used in racing. .
I don't know if it's so much a 2 lines from the MC or 1 that Ts off that affects feel so much as those hoses that have smaller I.D. tubing inside of them compared to larger. Although I've never done a back to back comparison to know for sure.
I don't have enough experience with the tee getups to say I can tell the difference in feel, but in my opinion the advantage is less garbage up by the throttle/brake area with the "tee" arrangement. I'd go tee for no other reason than that.
A single line off the m/c makes routing much much easier. I prefer the "t" junction below the triple tree.
thanks guys!!! as i said im an old MXer that just got into knee dragging so im sure ill be on this forum asking a lot of questions. if u guys ever come to jamaica hit me up
I just tried a single line that goes to the rt caliper which has a double banjo, then another line that goes over to the lft caliper. This was on a SV650 with the stock master cylinder, RBF600 fluid and new Vesrah RJL pads. Definitely less braking power than my friends SV with identical pads and MC with traditional double lines.
I understand, but you're comparing two different bikes, I'd say that's pretty unscientific, no offense at all. Suzuki masters are hit and miss. If you did that back to back with your own I'd say you have a little more proof. Looking at it, there are a lot more important things that change power/feel, way more so than line setup. Lines are just for transmitting pressure made, if you have a good quality line, I cant see any reason line setup has anything to do with pressure of the brakes. Shitty lines do flex though and you can lose power from that, but that's about it. Two lines may hold more fluid, but its going to be pretty marginal. More line means more surface area for cooling, again marginal.
suzuki masters, I have seen same bike, same dealer, one you press you touch the handlebar and another is nice....
Wouldn't the line diameter make a large difference in feel too? Our RS125, which has only a single caliper, had a small line on a spare setup, and Tyler didn't like how it felt. As I recall, it was the same master cylinder and caliper and the only difference was the noticeably smaller diameter brake line. I never spent the time to experiment and verify it truly was the line diameter, I just presumed it was. i haven't tried to understand fluid dynamics to see if it made a difference, or if there was just something else going on with that setup?
Yes line diameter makes a difference. This affects the total volume of the system. The master diameter is part of the equation along with volume to determine how far it has to go to push the brake pistons. I suspect the feel he didn't like is how much less the lever had to move to make more or less pressure on the brake pistons. Kinda interesting how little of a change you can notice.
The problem with this setup (675's come this way) is that there is a high spot in the line from one caliper to another where it's possible to get an air bubble. It's a bit more difficult to get that setup bled properly. Single line from the master to a tee has more joints which need to be sealed, a double line takes up more space at the master.
So that is probably similar to the difference between a 19x18 vs. a 19x20. If I remember right, he liked the 19x18 because it felt better trail braking and had more lever movement, vs. a 19x20 which was more on/off?
