Beringer Brakes: New system will allow harder, safer braking

If you click on "heavy front brake application" you get a pretty cool looking picture of Buell stopping quickly..

Yep I agree pretty amazing..

kavenger said:

If you click on "heavy front brake application" you get a pretty cool looking picture of Buell stopping quickly..

Click to expand...

"Says Jones, 'We think we managed to conclusively prove that Buell motorcycles are capable of some pretty extraordinary things.' Er, certainly…
"

Those are some pretty crappy brakes, if it takes a whole 305 metres to haul that junkpile to a stop from 200kph. Why, my conventional-single-disc Hawk can stop well-within 100 metres from 189kph (it probably won't DO 200kph without a push!)................

The standard most car are measured is can it stop from 60 mph in around 120 feet. I looked at a old SportsRider article and the rider could only manage 146 ft using a Bandit

kavenger said:

The standard most car are measured is can it stop from 60 mph in around 120 feet. I looked at a old SportsRider article and the rider could only manage 146 ft using a Bandit

Click to expand...

Those WERE some crappy brakes - IIRC an '88 Hawk (with a single front disc, 2-piston caliper) could manage the same in roughly 116 to 121 feet(depended on which magazine you read). This was when even the BEST cars out there couldn't "Whoa!" it below ~160-180 feet or so.

Tire and brake-pad technology has indeed come a long way since then.

The_AirHawk said:

"
Those are some pretty crappy brakes, if it takes a whole 305 metres to haul that junkpile to a stop from 200kph. Why, my conventional-single-disc Hawk can stop well-within 100 metres from 189kph (it probably won't DO 200kph without a push!)................

Click to expand...

I think it comes down to technique. Clearly, nobody has told Craig Jones that the quickest way to stop a bike is with both wheels on the ground. Accomplishing that goal is also probably easier with the passenger on the back of the bike as well.

The_AirHawk said:

"Says Jones, 'We think we managed to conclusively prove that Buell motorcycles are capable of some pretty extraordinary things.' Er, certainly…
"

Those are some pretty crappy brakes, if it takes a whole 305 metres to haul that junkpile to a stop from 200kph. Why, my conventional-single-disc Hawk can stop well-within 100 metres from 189kph (it probably won't DO 200kph without a push!)................

Click to expand...

Crappy brakes indeed. 200kph -> 0 in 305m is average decel of .5g, about half of typical motorcycle road test decel. 60mph -> 0 in 120ft, representative braking performance for current bikes, is 1.0g average decel. (Motorcycle Consumer News is the only US publication that regularly tests braking, and their numbers usually match CW's on the rare occasion that CW includes a complete road test data panel.)

However, I find your 100m braking distance from 189kph -> 0 for a Hawk GT (or any other road bike) a bit hard to believe. That's 1.4g average, the equivalent of 85ft 60mph -> 0, much better than any published motorcycle decel results. Even taking into account the added decel from drag at elevated speed, I don't think it would be attainable under the same conditions as a CW test.