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Old 04-07-06, 10:16 AM   #21
sdusk
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Kate, once tyre and brake technology moved to the point where bikes could do stoppies at almost any speed, the 70/30 rule became obsolete and is now the 100/0 rule under emergency or race braking. There are those that advocate that braking in the least distance is obtained by first a quick dab to rear brake to make the bike squat, followed by large controlled squeeze of the front brake whilst releasing the back brake, and when the bike has almost reached a complete stop to slightly release the front brake and add some rear brake again. All sounds good in theory, but not so easy to follow when it is needed most.
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Old 04-07-06, 10:22 AM   #22
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I tad of rear brake helps stabilise the bike under braking, especial on a twin where the rear wheel may still be tring to push the bike forwards and possably lead to it wanting to overtake the front. In an emergency it better to concentrace on the front though.
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Old 04-07-06, 10:49 AM   #23
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Quote:
Originally Posted by sdusk
Kate, once tyre and brake technology moved to the point where bikes could do stoppies at almost any speed, the 70/30 rule became obsolete and is now the 100/0 rule under emergency or race braking.
Perhaps you should explain this to all instructors, examiners and advanced riders? And also get the test changed? But I'm sure you know best.
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Old 04-07-06, 11:02 AM   #24
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Quote:
Originally Posted by sdusk
Kate, once tyre and brake technology moved to the point where bikes could do stoppies at almost any speed, the 70/30 rule became obsolete and is now the 100/0 rule under emergency or race braking. There are those that advocate that braking in the least distance is obtained by first a quick dab to rear brake to make the bike squat, followed by large controlled squeeze of the front brake whilst releasing the back brake, and when the bike has almost reached a complete stop to slightly release the front brake and add some rear brake again. All sounds good in theory, but not so easy to follow when it is needed most.
I suggest against patronising people when you lack the most basic observational skills required to ride safely.
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Old 04-07-06, 11:05 AM   #25
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Kate, this isn't my own personal theory, it was my riding instructor that explained this to me, and demonstrated it to perfection on a section of race track.
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Old 04-07-06, 11:08 AM   #26
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Quote:
Originally Posted by sdusk
demonstrated it to perfection on a section of race track.
I'm sure he did. However I might humbly suggest that what works well on a race track might not always be the best technique for road riding.
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Old 04-07-06, 11:11 AM   #27
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fizzwheel, just to clarify, it was to do with road riding, on standard road bikes - but for obvious reasons it is not the best idea to demonstrate/practice emergency braking on your nearest A road.
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Old 04-07-06, 11:16 AM   #28
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Quote:
Originally Posted by sdusk
fizzwheel, just to clarify, it was to do with road riding, on standard road bikes - but for obvious reasons it is not the best idea to demonstrate/practice emergency braking on your nearest A road.
Agreed.

I tend to use the back brake just as I'm about to stop for the last bit of braking I find it helps stabilise the bike. Otherwise I dont tend to use it at all.

I think the trouble with the standard SV brakes is that the power is there, but there isnt IMHO alot of feel from the lever.
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Old 04-07-06, 11:27 AM   #29
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Now I honestly don't wish this to appear patronizing but if you're constantly having these close calls and riding the bike on the very edge then maybe you need to slow down a little and re-appraise the whole situation — after all, it's getting safely to point B that counts most .


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Old 04-07-06, 12:06 PM   #30
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Jonboy, not patronising at all - good advice for me more than most!
What I didn't really convey very well previously is that neither of the two situations I experienced were in any way unusual or dangerous in their own right. I always expect cars to change lanes in front of me as it is not easy to spot a bike going fast. I expect it to happen twice, three times, four times in a row in fact. I leave more room than most any biker I know to cater for the unexpected. What I didn't expect is for the brakes to basically fail after two moderately hard applications.
In the second situation I was going faster than usual - 120 v 100, but I didn't really expect that the brakes would not be powerful enough to scrub off the higher speed when other bikes have no trouble doing so. I never expected the brakes on an SV to be ready for the racetrack and be able to do perfect stop after stop ad infinitum - just that they be as good as those on other vehicles that we share the road with.
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