| Author | Message | ||
     Henrik |
So I'm planning some work on the S2 ... I've found the single disk brake power to be somewhat lacking since I went from the stock cast iron disk to the new SS disk. The master cylinder is no doubt part of the reason even though I'm currently running a Nissin caliper with HH pads. But a year or two ago I managed to snag one of the unobtainium left side PM calipers and was considering going with a dual disk set-up. But here are the factors I need to take into considerations: - the lacking single disk set-up is no doubt due to the master cylinder being too large a bore. Optimal bore would be around the 5/8" the newer tubers run. Of course I've not been able to find a non-chrome master of that size ... until now that is:  - This is a master cylinder from ISR in Sweden. It comes in 2 sizes for either 1 or 2 calipers. Which brings up the point that I could run dual disks, with 2 caveats: I'll need a left side rotor - 1) stock would work but look like it runs backwards. 2) Getting a set of aftermarket rotors would be nice and likely be lighter, but also a bit pricey. - single disk set-up of course is lighter = less unsprung and rotational weight, but will I get enough braking with SS disk, good pads and right size master cylinder? - dual disk will be heavier =more unsprung and rotational weight, but most likely give me plenty of braking. I'll also get less heat in the pads/calipers and much longer wear from pads and disks. But will the added rotational and unsprung weight lead to handling issues I'll notice? I ran it by Al who would not give up the lighter set-up and felt I'd get plenty of braking for sane street speeds with a single disk. Cap on the other hand thought I'd like the added braking power and feel of a dual disk set-up and didn't think I'd feel the difference in weight. Given the price of that ISR master cylinder it's important I get it right the first time around  They also carry these:  I.e. a matched set of adjustable controls that'll fit the 1" bars of an S2 - cool. What say ye? Henrik | ||
| Blake |
Henrik, I'd advise sticking with the single disk configuration. Suggest you try the EBC steel disk offered by American Sport Bike. It is rock solid and gives great braking performance, but doesn't turn orange like the OEM iron rotor. It will oxidize some, but nothing like the pure iron version. Plus it just works great. Is the brake line already braided stainless clad? If you seek more initial bite, try the EBC green pads over the stockers. | ||
| Henrik |
I'd advise sticking with the single disk configuration Oh, come on Blake, don't be such a stick in the mud  Yep, I have braided line on there now. I have the new style SS stock rotor on there as well, not running the original cast iron disk anymore. I did look at the EBC rotors, just don't like their look. I'm usually "function over form", but some "looks" just rub me the wrong way I do have an eye on the wave rotors Al carry though - but the price of 2 of them is a tad out of my S2 renovation budget. I've tried the EBC green pads. Really didn't think they worked well for me. Add to that the huge mess the dust from those pads makes and they went into the bin. I have a set of Lyndall pads for my PM calipers that I've been looking use. Of course if I stick with a single disk, I'll be better off with the Nissin caliper. Questions, questions Thanks for your thoughts. Henrik | ||
| Firemanjim |
Henrik,you will never notice the added weight.I have the ISR dual 6 piston calipers and discs and love em. |
