10-29-2014, 09:08 PM
(10-29-2014, 01:46 PM)Pterodactyl_imp Wrote: OldF7Guy. +1. The rear brake is more than adequate for the job it is intended to do. At low speeds it will lock up the rear. At high speed, used in trail braking, it steadies the bike nicely. In an emergency stop max braking effort situation the rear brake is excellent. Why? Well it has to be used in conjunction with max effort from the front brake. Max front brake application will transfer at least 80 - 90% of the weight to the front wheel of the bike. Don't believe me? Take a look at slow motion of a GP bike under max braking. The rear wheel actually leaves the ground, that is at intervals 100% of the braking effort is borne by the front. OK, we are not GP heroes (me anyway), but under max effort road braking the last thing you need is a rear brake approaching the power of the front brake. Why? Simply because with little weight on the rear it will surely lock up the rear wheel which will lose traction and therefore become ineffective. That is why ABS is effective. Max effectiveness is reached before traction is lost, that is before a skid develops. So when, sometimes in reflexive surprise, we snatch at the front brake we must, equally reflexively, apply rear brake to provide retardation, as appropriate, to the rear wheel otherwise the mass of bike behind the steering head is likely to want to swap ends. Nasty. The CB rear brake is very capable of producing the brake effort required for a max effort stop.
A forum member, perceptively, posted a you tube link with front, rear and combined braking demonstration. Look at it.
If you judge the effectiveness of the rear brake by a max effort (rear brake) only) stop from high speed the test is inappropriate. Bit like saying a fork is useless in tackling a 650gm New York cut. Well it is. Without a knife. And please, spare me a discussion on how to use a knife and fork.
Cheers
+1 and well stated Ptero, I cannot fault the rear brake on my bike, about perfect I think.