tag:blogger.com,1999:blog-8614319136975491150.post7316601650126444298..comments2023-07-04T04:18:43.711-07:00Comments on A Practical Cyclist: Disc BrakesRobert Andersonhttp://www.blogger.com/profile/02881066383294557792noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-8614319136975491150.post-85224224217611203282009-08-20T04:55:45.982-07:002009-08-20T04:55:45.982-07:00Funnily enough, disc brakes require significantly ...Funnily enough, disc brakes require significantly less effort from fingers to achieve same braking power. Single index finger is sufficient to endo you (and quite easily too). All to do with leverage ratios, disc brake pads translate a lot less for the same lever pull.Huackhttps://www.blogger.com/profile/04008331177972006437noreply@blogger.comtag:blogger.com,1999:blog-8614319136975491150.post-9886730621308685962009-06-18T04:10:34.326-07:002009-06-18T04:10:34.326-07:00John, I don't disagree with your hot rims comm...John, I don't disagree with your hot rims comment, although I thought the heat was more of an issue with melting glue for sew-ups rather than blowing tubes (which I've not heard of). But, I do disagree with your torque analysis. While the torgue is identical (and in fact my diagrams support this directly), there's no way the load on the spokes is equal.Robert Andersonhttps://www.blogger.com/profile/02881066383294557792noreply@blogger.comtag:blogger.com,1999:blog-8614319136975491150.post-6426918533367963002009-06-17T11:52:20.469-07:002009-06-17T11:52:20.469-07:00These type of freebody diagrams are tricky. Actual...These type of freebody diagrams are tricky. Actually, the load on the spokes comes from the torque the braking force exerts around the hub. Since this torque is identical for a given amount of braking, it makes no difference if it is applied at the rim or the rotor.<br /><br />The shearing force will increase on the frame at the brake mounts. However, I would expect this load is small compared to that imposed hitting a good bump. I doubt the stays would need much in the way of additional strength.<br /><br />I've always thought the big advantage of disc brakes for road bikes was avoiding hot rims and blown tubes on those long, twisty descents. I think they're an excellent idea for heavy mountain touring and mandatory for tandems.John Marrhttps://www.blogger.com/profile/04387092809665663521noreply@blogger.comtag:blogger.com,1999:blog-8614319136975491150.post-3647138119293120082009-06-17T09:19:26.034-07:002009-06-17T09:19:26.034-07:00I now have 10,000 miles on my Kyserium wheels. The...I now have 10,000 miles on my Kyserium wheels. They have remained true this entire distance, in spite of a couple hundred of those miles being on gravel roads.<br /><br />I would estimate perhaps a third of the "life" from brake wear has been used up.ChipSealhttps://www.blogger.com/profile/07095195723481694050noreply@blogger.comtag:blogger.com,1999:blog-8614319136975491150.post-6274589090179091652009-06-14T21:45:17.735-07:002009-06-14T21:45:17.735-07:00Though this might be classified along with off-roa...Though this might be classified along with off-road use, I think on-road cycling in wet weather (rain, sleet, etc) might be better with disk brakes. In my experience, riding in rain means my rims get dirty and scratched to hell by the brakes. While cantilever have better stopping ability, in this case I'd prefer disk brakes because they're further away from the ground, so they don't get the same level of grime in them to destroy the rim.Donaldhttps://www.blogger.com/profile/05850621237586891240noreply@blogger.com