A man after my own heart! Glad that we won't wage wars over endianess (as in Gulliver's Travels)!
Mind you does make me realise that I spent ages "improving" my brakes and that any improvement was the emporer's new clothes!
rjb wrote:Come on you mathematicians - all we need is a graph showing the brake cable movement by the brake lever (ie distance the straddle rises) verses the brake block movement at the rim for different straddle heights (angles).
mattsccm wrote:And don't tell me to use V's.
531colin wrote:it seems to me you can get an MA out of just the straddle wire, if the yoke angle is kept very small
Cyclenut wrote:....................... lets call it straddle distance............
If you want an easy way to calculate the MA of a brake put a ruler across the heads of your brake bolts and see where it's intersected by another straight thing aligned along the straddle. Distance from intersection to the nearer brake bolt = b - or lets give it a more memorable name, lets call it straddle distance. They say a picture's worth a thousand words so here you go:
Divide straddle distance by twice the height from ruler to brake block centre (usually about 25mm nowadays, so divide by 50) and you have your MA. In this case 140/50 = 2.8.