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Thread: Practicing Emergency Braking

  1. #1
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    Lightbulb Practicing Emergency Braking

    I've started this in a new thread as this post was not really related to my smooth riding thread.

    Most people know that on road bikes, the front brake/s are used a lot more heavily than the rear brake. This is because the weight greatly moves on to the front tyre and off the rear wheel during the braking process.

    With modern bikes brakes being so good, one usually finds the single biggest limit is the amount of grip that is available, rather in any limitation in the brakes themselves. The trickiest thing if course is the grip is as variable as the road surface type/conditions you encounter riding NZ roads.

    Hardware.
    I adjust my brake lever lowish so I can easily flick my fingers out over the lever - being quick on the draw can literally save your life. If you have to rotate your wrists up to get your fingers on the brake lever, your wasting precious nano seconds and weakening your stance, don't forget when braking hard, your dealing with very real and all powerful G-forces.

    Make sure your brake fluid is at the correct level. If you subscribe to the smooth style, you could consider running the HH soft compound race grade compound brake pads. They will still last plenty long, and the difference between race and street can be vast, not only in stopping power, but the just as important factor - feel.

    When out riding, I drape one finger over the brake lever at all times, sometimes even two if I'm feeling particularly twitchy at events happening around me.

    Braking Technique
    When faced with emergency braking, reach for the brake lever and smoothly and progressively squeeze it (progressively squeezing the brake lever helps your forks/bike settle giving better grip), while simultaneously brace yourself against the bars with your elbows bent out (your bent arms effectively become part of the suspension process giving more grip). Get on the balls of your feet (even just the left foot if right your foot is on braking duty).
    If you have the style of bike where you can clamp the tank between your knees, do it!
    As your front tyre reaches it grip limit, the "texture" you feel through the bars will suddenly change from the usual organic slightly buzzy feel to deadly silky smooth as your front tyre locks and starts to skid. As soon as you feel that change, reduce pressure on the brake lever, regain traction and still brake hard, but not quite as hard as before. Try not to completely release your front brake either, as that will pop your forks up an you will have to go over the whole suspension settling part again. In this scenario the rear brake should only be used very sparingly to act a as stabilizer. (some bikes such as cruisers can usually handle a fair bit more rear brake than a sports/naked/sports tourer blah blah)

    If your a newbie and your thinking "Hell, thats a lot of stuff to remember and do!" Well, I'm not going to sugar coat it for you, yes, there is a lot to learn in this area. It comes down to practice, which just means more time on the bike, so it's hardly a hardship eh.

    Exercises I've used to speed up the learning process:
    Practice emergency stops in very quiet areas of road from speeds ranging 50, 70 and 100 kph.
    Select different surface types to practise on, i.e fine stone chip, coarse stone chip, hotmix, patchy/slick road (with MUCH caution) and practise wet road stops too.
    Practice braking on each new bike you buy.
    Start a run from a standing start, look over your shoulder for traffic before you start every single run.
    Get up to speed pick a marker, then putting all the above into action, going into the stance and applying the brakes etc. take note of where you stopped, and if the road is long enough, repeat the process. Turn around, and do the same back to where you started. When repeating the process again, use the same braking markers and keep taking note of where you stop in order to monitor your progress into becoming a demon braker!

    Once you have had a chance to practice and are feeling more comfortable with the process, I highly recomend you practice flicking a glance in your mirrors, it can be the guy behind you that cannot brake as hard as you that takes you out. I've had near escapes on both bikes and cars by modulating the braking velocity to ward off assaults from the front and rear! Within the realms of emergency braking, once maximum braking is reached, A well practiced rider "usually" has a window of opportunity to glance at the mirror.

    ATTITUDE as in never say die!
    Every bit as important as good hardware and well practiced braking technique, is attitude. It can be the difference between making it, and checking out off planet Earth permanently.
    I know of scenarios where basically, the rider has got into a situation and they thought ARGGGG I"M CRASHING!. Talk about a self fulfilling prophecy. Never, ever give up and always have a "crashing is not an option" attitude at all times.

    In a life threatening scenario, having a never say die attitude, combined with being open to all possibilities, can honestly inspire God like riding abilities, if only for the 2 seconds it takes to save ones own life!

    Wet Braking:
    Barring slick tar and the like, most surfaces offer a lot more braking friction than many would realize. in most cases you can easily brake at least 75% as hard as in the dry, and often more.

    Do watch out for surface water, it's deadly as it can hydroplane your front wheel (the wheel locks and "floats" across the wet road).
    When the road is turning from dry to wet, particularly on hot mix, beware of when the water droplets start joining up - it suddenly becomes VERY SLIPPERY. If your tyre slides (even a bit) it creates a domino effect of droplets joining together effectively taking your tyres away from under you, and it can happen a blink of an eye.

    The key to it all is simply practice. Once you are confident you have it nailed, your guarded confidence will up that grin factor even more

    Feel free to ask any clarifying questions you may have on the above, or add in your experiences with emergency braking.

  2. #2
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    I know I need to practice more .. however what I have already learnt sure stood me in good steed just prior to xmas when a car pulled out in front of me .. instinctive reaction to stand the bike upright (was on a sweeping corner 100 k zone) and hit both brakes really hard but evenly ..

    I had already assessed this guy was prob going to pull out in front of me and scrubbed a heap of speed off before I hit the brakes and ended up a foot or so from his rear bumper ..

    sooooooooooo mentoring one when do we get to practice some more ... everything but gravel as we do not like gravel ..

    Great thread btw
    Have to Karma ... Justice catches up eventually !!

  3. #3
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    Quote Originally Posted by sugilite View Post
    Most people know that on road bikes, the front brake/s are used a lot more heavily than the rear brake. This is because the weight greatly moves on to the front tyre and off the rear wheel during the braking process.

    Are you one of those "never touch the rear brake" guys..???

  4. #4
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    Quote Originally Posted by dipshit View Post
    Are you one of those "never touch the rear brake" guys..???
    Alot of racers are. What's your point?
    Vote David Bain for MNZ president

  5. #5
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    Quote Originally Posted by White trash View Post
    Alot of racers are. What's your point?
    You can stop quicker using both.

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    Quote Originally Posted by dipshit View Post
    You can stop quicker using both.
    not if the back end is up in the air you dont! and using the rear brake at such a time will cause the bike to pitch forwards actually reducing the braking capability!!

    Tis probably well past time I do some emergency braking on the bros, really don't wanna drop it though

  7. #7
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    I got me one o them thar noo fangled beasties with extra braking available if both brakes are used.
    ... and that's what I think.

    Or summat.


    Or maybe not...

    Dunno really....


  8. #8
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    I think worthing of noteing is that every bike and every situation is different. How I brake on a racetrack on a Gixxer 600 is totally different to how I brake on a GN250 just after a rain shower on the norwestern parkway.
    getting the experience to know the difference is really important.



    Yea yea trashy you'd say theres fuck all difference
    To see a life newly created.To watch it grow and prosper. Isn't that the greatest gift a human being can be given?

  9. #9
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    Quote Originally Posted by chanceyy View Post
    I had already assessed this guy was prob going to pull out in front of me and scrubbed a heap of speed off before I hit the brakes
    And there is the key, good skills, with great attitude.

    Quote Originally Posted by dipshit View Post
    Are you one of those "never touch the rear brake" guys..???
    I do use the rear brake, even/especially when racing. Initially to steady the bike, and depending on the corner, I start to apply it more as bike velocity slows. (hard to teach that stuff, it comes with lots of experience on racetracks).
    You prob noticed I mentioned in the context of Emergency braking I use the rear brake sparingly to steady the bike and made the comment that some bikes can use a fair amount of rear brake.

    I thought a fair bit about it before posting and decided not to encourage it wholesale as in an all out emergency situation, it is soooo easy to overcook and lock the rear, then you have another serious fire to fight to get the bike under control and stopped in time.

    Quote Originally Posted by dipshit View Post
    You can stop quicker using both.
    Again, on sports and even sports tourers, the % of extra stopping power is negligible and for riders who have not raced or been riding a fair while would definitly run a high chance of locking it up.

    Quote Originally Posted by FROSTY View Post
    I think worthing of noteing is that every bike and every situation is different. How I brake on a racetrack on a Gixxer 600 is totally different to how I brake on a GN250 just after a rain shower on the norwestern parkway.
    getting the experience to know the difference is really important.
    Exactly, thats why it is just about impossible to cover in written form like this as every bike is different.

    As Frosty says, it is really important to practice on each bike you ride and get to know the difference.

  10. #10
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    Quote Originally Posted by bogan View Post
    not if the back end is up in the air you dont! and using the rear brake at such a time will cause the bike to pitch forwards actually reducing the braking capability!!
    Pitching forward would increase weight on the front wheel with which to add even more braking to that no?

    I also use alot of engine braking to scrub speed too, surprisingly effective, do it in the car as well, all limbs might as well lend a hand to savin' your ass. It's all about turning kinetic energy into heat, be it through the brake, clutch, or radiator/fins, and if your brakes should ever fail for some bizarre reason, the engine and clutch are all you've got.

  11. #11
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    I don't think I get anywhere near the braking capacity of my front brake but am scared to test where the limit is. Because of this, I do find the rear brake helps a lot. I can imagine that if braking really hard / emergency braking, the weight coming off the back would allow the rear tyre to lock up relatively easily. My question is how do you practice braking to the limits of the bike? If the front locks, is there still a reasonable chance of staying upright if I let go quickly enough? I really don't want to drop my bike. Cheers for listening to my noob question

  12. #12
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    I think the progressive part of the brake lever squeeze is really worth emphasizing. It is important to NOt just grab it and lock the front.

    May be worth commenting that when braking you also pull the clutch in and down shift? (Thinking of noobs...)

  13. #13
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    Yeah, IF you let go fast enough, and possibly have luck go your way.

    My only near miss thus far (touch wood) was out doing the Kaiaua loop, came around a bend at 100kmh, and there's a car idling along the wrong side of the road, pair of asian folk checking out a house. Awesome. Hit the brakes instantly, squeezed a bit hard for the fact I'm still on a slight lean exiting the corner, front locks up and I feel the front begin to slide out, as fast as I got on them I got off them, have a bit of a wriggle as the wheel rolls again and pulls the front end back up, then with the car problem still ahead I take alternative action and manage to duck under him using the shoulder.

    Hairy ass nightmare.

    So I guess what I can offer here for ya steve is, yes you can save a front lock up, but, I've only had it happen the once so I can't guarantee that it's a repeatable feat. Usually I just try feel that gritty, half-skidding-but-not feeling.



    On a completely different note, this Day of the Triffids thing on TV is farkin' terrible.
    Last edited by thealmightytaco; 3rd February 2010 at 20:42. Reason: needed more hyphens

  14. #14
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    And I probably also grabbed too hard too fast, as okey dokey said, progressive braking, good point okey.

  15. #15
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    Quote Originally Posted by steve_t View Post
    I don't think I get anywhere near the braking capacity of my front brake but am scared to test where the limit is. Because of this, I do find the rear brake helps a lot. I can imagine that if braking really hard / emergency braking, the weight coming off the back would allow the rear tyre to lock up relatively easily. My question is how do you practice braking to the limits of the bike? If the front locks, is there still a reasonable chance of staying upright if I let go quickly enough? I really don't want to drop my bike. Cheers for listening to my noob question
    Yes, choosing a safe quiet straight piece of road with good stone chip for your first practice area would be a good idea. When you are straight up and down, you will be able to recover and carry on as before...just make sure you let off the brakes as soon as you feel the front tyre let go. You can also feel a slight tearing sensation through the bars just before it lets go completely. The circumstances that thealmightytaco went through were because he was leaning over when he locked, that is a lot more serious and hard to recover. So he stayed open to options and had the skills to get through it. Good on ya thealmightytaco!

    Quote Originally Posted by Okey Dokey View Post
    I think the progressive part of the brake lever squeeze is really worth emphasizing. It is important to NOt just grab it and lock the front.

    May be worth commenting that when braking you also pull the clutch in and down shift? (Thinking of noobs...)
    Yes both important points. I've been riding so long, that I tend to assume knowledge, so it's nice to be hauled up on important stuff llike that!

    Thinking about it, for 50 kph areas, I'd tend to whip in the clutch and just use the brakes as you generally have less time/space to react. For 70 and 100 kph areas, I definitly down change and use the clutch/gear box to aid deceleration.

    Cheers

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