Well, it's like this: First, make sure the 4 brake parameters are set correct to reflect your brake. For example, OP is half the width of the brake bosses, OD is the brake "reach" that Grant writes about, PA is the effective length of the "actuated" brake arm.
Once you got those set up, you can toggle the "Y", which is the yoke height. As you toggle it up (increasing YO on the X-axis), you will see that the mechanical advantage goes down (on the Y-axis). Increasing mechanical advantage means that you will need less finger force to exert more braking force at the pads, at the cost of less pad clearance when the brakes are released. You will notice that for a particular set of the 4 brake parameters, the mechanical advantage curve is the same, and moving the yoke up or down only changes where in the response curve the brake is adjusted to, and not the curve itself. >From this neat visual aid, one can verify that all else being equal, having longer reach brakes will reduce mechanical advantage. Similarly, having shorter "actuated" arms will also lead to reduced mechanical advantage. The visual aid is quite useful in comparing different cantilever brakes. For example, in the default setting (just reload the URL), one can see that to get a wide profile brake to feel like a low profile brake (i.e., have similar mechanical advantage), the wide profile brake will need to have a much lower yoke height than the low profile brake (about 60 vs. about 140, respectively). -B On Apr 12, 7:14 pm, Rene Sterental <orthie...@gmail.com> wrote: > Saw that online earlier. Still clueless about using it or interpreting it. > > Sent from my iPhone 4 -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
