Hi, thanks for the video. I wanted to comment on the 90 degree thing. What you are saying in principle where 90 degrees is the optimum is good advice, but not the only thing to consider. If you look at VECTOR FORCES ( you can look that up) the true effective pull angle is not the lower part of the cable near the cantilever, but a point closer to the cable stop near the stem. This is because the effective pull angle is the sum of the lower cable section plus the vertical cable section. The other consideration is that you could actually get a stronger brake pull with less effort but placing the cable bridge much lower near the tyre. This is because the vertical cable draws on the "bow" of the lower cable running between levers much like an archer pulling the string back on a bow. Pulling the string perpendicular to the line of resistance (which is vertically between the two ends of the bow is actually much easier that trying to pull the ends of the bow together in a straight line. A similar technique was used by sailors when hauling on sail lines on the old tall ships. Rather than pulling straight down on the line, as it was tied off, they would pull the line horizontally towards them which is much easier, then with tension on, tie the line off shorter. Try moving the bridge lower, you might be surprised that your braking becomes somewhat easier. With regards to the tow-In, under load because of friction of the pad and the rotation of the rim, the pad is "dragged" in the direction of the rim which twists the pad and the cantilever, this results in the trailing edge of the pad( the end pointing to the front) actually skips at high speed and caused the shudder an squeal. You counteract this twisting of the mechanism by putting the trailing edge of the pad about 1mm closer when at rest. Under the load, the pad will be "dragged" into an angle parallel to the rim giving you firm contact and actually more even pressure under load and therefore more braking power.
Everyday we live, everyday we learn. If I were to shoot this video again today my technique for setting up canti’s would be slightly different. I agree, I should have the carrier cable closer to the tire. Thank you!
Hi, thanks for the video. I wanted to comment on the 90 degree thing. What you are saying in principle where 90 degrees is the optimum is good advice, but not the only thing to consider. If you look at VECTOR FORCES ( you can look that up) the true effective pull angle is not the lower part of the cable near the cantilever, but a point closer to the cable stop near the stem. This is because the effective pull angle is the sum of the lower cable section plus the vertical cable section. The other consideration is that you could actually get a stronger brake pull with less effort but placing the cable bridge much lower near the tyre. This is because the vertical cable draws on the "bow" of the lower cable running between levers much like an archer pulling the string back on a bow. Pulling the string perpendicular to the line of resistance (which is vertically between the two ends of the bow is actually much easier that trying to pull the ends of the bow together in a straight line. A similar technique was used by sailors when hauling on sail lines on the old tall ships. Rather than pulling straight down on the line, as it was tied off, they would pull the line horizontally towards them which is much easier, then with tension on, tie the line off shorter. Try moving the bridge lower, you might be surprised that your braking becomes somewhat easier. With regards to the tow-In, under load because of friction of the pad and the rotation of the rim, the pad is "dragged" in the direction of the rim which twists the pad and the cantilever, this results in the trailing edge of the pad( the end pointing to the front) actually skips at high speed and caused the shudder an squeal. You counteract this twisting of the mechanism by putting the trailing edge of the pad about 1mm closer when at rest. Under the load, the pad will be "dragged" into an angle parallel to the rim giving you firm contact and actually more even pressure under load and therefore more braking power.
Everyday we live, everyday we learn. If I were to shoot this video again today my technique for setting up canti’s would be slightly different. I agree, I should have the carrier cable closer to the tire. Thank you!
@@wrenchfriday So I have a set of neo retros, do i wanna set them up with the straddle cable closer or further away from the tire?
Liked the video m8 keep it up
Totally makes sense. Thanks!
Appreciate it! Happy to help
yes, pointless.