Michael, I am confused. Are you saying that not enough mechanical advantage causes the lever will bottom out, or that too much will? Do you agree with Mark that 90 deg. gives the best stopping power, and say that 45 degrees gives the most power? Are you distinguishing between "pure power" and "stopping power", and if you are how do you define them? What exactly is the "hence" that makes neo retros require a higher straddle cable? Could you please elaborate?
On Friday, February 20, 2015 at 4:40:16 PM UTC-8, Michael Hechmer wrote: > > I too agree. Mechanical advantage is important to avoid having the lever > bottom out before the brake fully engages, but pure power will be maximized > when the straddle cable is 45 degrees to the arm. Hence the neo retros > require a higher straddle cable than the touring cantis to maximize > stopping power. > > Michael > > On Friday, February 20, 2015 at 5:25:28 PM UTC-5, Mark Reimer wrote: >> >> Deacon, >> >> I agree with you on this. Getting the straddle as close to 90 degrees has >> always been the position which yielded the greatest stopping power for me. >> With my neo-retro's (Aka the 'weaker' of the paul canti's) I have the cable >> long and up high, and I have enough power to lift up the back wheel if I >> really wanted. >> >> Lower straddle usually results in less power, and obviously less mud >> clearance as well. >> >> As I understand it, the idea is to get the cable as close to 90 degrees >> as you can WHEN the brakes are in contact with the rim. >> >> To read a much more exhaustive explanation than I'm willing to >> regurgitate, take a look at BQ's great write-up on setting up canti's. >> >> In the end, I'm sure we can all agree that Paul canti's are awesome. >> >> On Fri, Feb 20, 2015 at 4:18 PM, ted <ted....@comcast.net> wrote: >> >>> Deacon, >>> >>> I am glad that you were able get your brakes to work the way you want. I >>> suspect you were told the opposite of what I am telling you, and that you >>> understood what they were saying. Sadly they told you wrong. But happily >>> they still steered you to something that worked for you. >>> >>> The phrase "slushy brakes" suggests to me low effort producing large >>> brake lever travel with little braking effect. If that's what you had it >>> was likely due to elasticity in the brake system, which is a separate thing >>> from leverage. If you experience that sort of thing, look for what moves >>> when you squeeze the lever hard after the pads hit the rim. For example, I >>> found the steel front cable hangers flex a lot. Replacing mine with the >>> aluminum ones improved the feel of my brakes significantly. Cables that >>> change shape as the brakes are applied can be another source of excess >>> travel. >>> >>> >>> On Friday, February 20, 2015 at 4:21:44 AM UTC-8, Deacon Patrick wrote: >>>> >>>> Ted, et al engineer types: I happily bow to your knowledge on the >>>> angles and leverage, though I was told the opposite (as I understood it) >>>> before I made the change. Interestingly, either way, the experience went >>>> from slushy brakes (short saddle cable, < 90˚ intersection with the brake >>>> arm) and salmon pads, to passable strength except in single track steep >>>> descents (long saddle cable, close to 90˚ intersection with the brake >>>> arm). >>>> But that point is mute now, as the Paul's are wonderful! I look forward to >>>> snow-free trails so I can try them out! >>>> >>>> With abandon, >>>> Patrick >>>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "RBW Owners Bunch" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/rbw-owners-bunch/5HXsqAEXrWM/unsubscribe >>> . >>> To unsubscribe from this group and all its topics, send an email to >>> rbw-owners-bun...@googlegroups.com. >>> To post to this group, send email to rbw-owne...@googlegroups.com. >>> Visit this group at http://groups.google.com/group/rbw-owners-bunch. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
