Discussion on How are disc brakes different from drum brakes

disc brakes in bikes
by prashant padhye on Sep 30, 2013 12:11 PM | Hide replies

as per information given above informs that only 30% of breaking is required on rear wheel, but why so less, why not like fron wheel ie 70%?

Forward | Report abuse

Re: disc brakes in bikes
by humaradesh on Sep 30, 2013 03:07 PM
Its simple physics, idea is to transfer the energy out of the motorcycle to stop. The quicker you transfer the energy you carry to another medium then the quicker you can stop. This is done by partially converting it into heat by the breaks, partially by compressing the suspension and finally transfer it off to the road.
There are limitations to first and second one ... then the third one becomes the most important.
This is achieved by designing the rake angle of the bike to point downwards. When you look at racebikes from the profile you will see a line pointing downwards. This makes the energy to be transfered down and ahead. so applying front break transfers energy forward and down but when you apply rear break the front suspension lifts so the energy ends up transfering forward and up ... and it takes a lot longer to come to stop.
Try this ... on any motorcycle ... when its wet .... just apply rear breaks ... you will see the bike slide and loose grip a bit ... next time just use the front breaks but keep the handle straight and see the difference.

Forward | Report abuse

Discussion Board	How are disc brakes different from drum brakes