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Old 07-03-2007, 06:55 AM   #1
kavenger
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Default Beringer Brakes: New system will allow harder, safer braking

"French company, Beringer have developed a new braking system that allows riders to brake later and harder, with reduced risk of loss of control. Beringer’s system uses a series of valves and hoses, which connect the front brake to an Ohlins rear shock and prevent the rear wheel from lifting on heavy front brake application." Read More
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Old 07-03-2007, 08:22 AM   #2
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If you click on "heavy front brake application" you get a pretty cool looking picture of Buell stopping quickly..
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Old 07-03-2007, 12:42 PM   #3
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From the description on the blog post, it apparently reduces front brake hydraulic pressure when the rear suspension is fully extended and restores it when the back tire comes back to earth. Is that how you understand it?
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Old 07-03-2007, 01:20 PM   #4
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Yep I agree pretty amazing..
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Old 07-03-2007, 04:18 PM   #5
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Quote:
Originally Posted by kavenger View Post
If you click on "heavy front brake application" you get a pretty cool looking picture of Buell stopping quickly..
"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!)................
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Old 07-04-2007, 10:28 AM   #6
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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
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Old 07-04-2007, 11:37 AM   #7
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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
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.
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Old 07-05-2007, 09:09 AM   #8
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Quote:
Originally Posted by The_AirHawk View Post
"
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!)................
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.
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Old 07-05-2007, 10:10 AM   #9
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Quote:
Originally Posted by The_AirHawk View Post
"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!)................
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.
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