Emergency stop practice - gear change problem

[Coldrider]

Found this interesting comment:
http://www.webbikeworld.com/Motorcyc...aking-tips.htm

The article assumes the rear wheel gets light but makes no mention of getting it airborne, which is another level again.
That article in NZised, Allan Kirk

[dipshit]

I've seen it a couple of times and experienced it once, a week after I bought my first bike.

Oh brother....

[dipshit]

my m8 in his old daytona 675 was down to about 30-35 metres
front only

It's interesting to note that in a British bike mag test, a 675 was absolutely cleaned up by big heavy bikes with linked front to rear ABS systems in a braking test.

[Jonathan]

Hahahaaaa!!! After reading this thread, next time I have to emergency break, this will be going through my brain - "hmm back break firs... no front brea... clutch in... or out? gear dow..."

THUD!!!

[centaurus]

Hahahaaaa!!! After reading this thread, next time I have to emergency break, this will be going through my brain - "hmm back break firs... no front brea... clutch in... or out? gear dow..."

THUD!!!

Why brake at all? If you go out might as well go out in style. Nobody cares about a biker who made a small dent in a car and scratched his fairings. However, if you manage to split the car in two... You might be dead but you will be a famous dead

[Jonathan]

However, if you manage to split the car in two... You might be dead but you will be a famous dead

Unfortunately it is much more likely I would end up squished on the front of a logging truck where I would remain unnoticed or passed off as some macabre hood ornament.

[jonbuoy]

If your going for the rear brake without the front in an emergency braking situation its going to end in a world of trouble. Assuming your not talking about heavy braking on an approach to a corner? Emergency braking is when stopping is the only way to avoid whats just jumped out at you, does it really matter that afterwards you have to fiddle around trying to find first gear? The point is you stopped before hitting something.

[p.dath]

It's interesting to note that in a British bike mag test, a 675 was absolutely cleaned up by big heavy bikes with linked front to rear ABS systems in a braking test.

You might find that the extra weight on the wheels also helped. ABS with linked brakes should be the ultimate. Just squeeze on the front brake with maximum force and let the electronics figure it out.

[Coldrider]

Well executed emergency brake performed, what does the car behind do? (scenario).

[centaurus]

Well executed emergency brake performed, what does the car behind do? (scenario).

It is true that you need to be able to get out quickly after an emergency braking, howerver, if your emergency braking wasn't good enough it's not gonna matter that you were ready to get outta dodge. Let's put things in the proper order. First you need to have a GOOD emergency braking, and only AFTER the braking has worked you worry about getting out of there.

Even if you're in 6th gear, if your emergency braking has worked it only takes a second to drop down to 2 or 3rd and get out (most bikes have enough grunt to move from a standstill on 2nd or 3rd, some could do this even in 6th). If you fucked up the emergency braking and lying on the ground or smashed in the car in front, it's not gonna make any difference that you are already in 1st gear and ready to roll.

[george formby]

If your going for the rear brake without the front in an emergency braking situation its going to end in a world of trouble. Assuming your not talking about heavy braking on an approach to a corner? Emergency braking is when stopping is the only way to avoid whats just jumped out at you, does it really matter that afterwards you have to fiddle around trying to find first gear? The point is you stopped before hitting something.

I have had to emergency brake on more than one occasion to safely swerve not stop. Sitting at 100k on the open road at night to suddenly see a black dog lying on the road in front of me, oncoming traffic dazzling me & vehicles behind. If I had not change down as I braked, the bike would have stalled on me as I swerved & no doubt I would have been squished.

[thehovel]

Being a noob I've been practising emergency stops on some back roads near my house. This type of stop obviously dispenses with engine breaking and down shifting, so when I come to a stop I'm in 4th gear with the clutch in. Now when I try to shift down into first to pull away again, the gear selector lights just go blank, and the leaver feels like it's not shifting properly, like it's stuck in limbo somewhere around gear 3-and-a-half.

Sometimes, after struggling with the shifter for a while, it suddenly seems to find the gears again. Other times I've stopped the engine and restarted, or pulled away in 2nd because it won't go all the way down to first. It's a 2006 Suzuki GN250. Any words of wisdom?

(PS I already tried pulling away in 4th guess I wasn't pushing it fast enough).

Back to square 1 the question is about a newbie on a GN250 (not a sport bike on a track with linked brakes and ABS) All braking should be the same :throttle off (you don't want any more go fast); front brake on gently to start then harder ( to hard to start will just lock up the wheel.Then weight transfer happens : cluch in (by this time engine braking is gone): back brake gently to start then harder (see front brake): tap dance on the gear lever. The back wheel will become light but it will still be ON THE GROUND so it has braking ability. I have never seen anyone do a stoppy on a GN . Emergency braking is all of the above JUST QUICKER. Regards Richard

[centaurus]

Back to square 1 the question is about a newbie on a GN250 (not a sport bike on a track with linked brakes and ABS) All braking should be the same :throttle off (you don't want any more go fast); front brake on gently to start then harder ( to hard to start will just lock up the wheel.Then weight transfer happens : cluch in (by this time engine braking is gone): back brake gently to start then harder (see front brake): tap dance on the gear lever. The back wheel will become light but it will still be ON THE GROUND so it has braking ability. I have never seen anyone do a stoppy on a GN . Emergency braking is all of the above JUST QUICKER. Regards Richard

Haven't you read the rest of the thread? We have already established that rear brake can be initially applied hard if you want, but as you progress with the front brake the rear needs to be reduced due to loss of grip on the rear wheel while braking hard - or at least kept at the same level; in now way pressed harder.

If the engine is in gear, even "slamming" the rear brake while the front is not applied yet would not lock the wheel. That is another reason I keep the clutch engaged until the last moment - even if I end up pressing the rear brake too much, the engine will prevent locking in 99% or the cases.

i have seen stoppies on a GN250, 100% stock. Before we started the practical part, the BHS instructor showed us what the bike can do, trying to prove that a good rider can do many things even with a rubbish bike - wheelies, stoppies, scraping pegs on very low speed corners, etc...

[george formby]

If the engine is in gear, even "slamming" the rear brake while the front is not applied yet would not lock the wheel. That is another reason I keep the clutch engaged until the last moment - even if I end up pressing the rear brake too much, the engine will prevent locking in 99% or the cases.

Drivel

i have seen stoppies on a GN250, 100% stock. Before we started the practical part, the BHS instructor showed us what the bike can do, trying to prove that a good rider can do many things even with a rubbish bike - wheelies, stoppies, scraping pegs on very low speed corners, etc...

I believe. If a GL1800 can wheelie, a GN can stoppie

[jonbuoy]

I have had to emergency brake on more than one occasion to safely swerve not stop. Sitting at 100k on the open road at night to suddenly see a black dog lying on the road in front of me, oncoming traffic dazzling me & vehicles behind. If I had not change down as I braked, the bike would have stalled on me as I swerved & no doubt I would have been squished.

Thats why I said IF its the only way to avoid an accident, if you can steer around it great sometimes you won´t even get that option and it´ll be a panic for your brain to do something if your reflex is to hit the rear brake first thats not a good thing in my opinion. If the choice is slamming into the side of a car thats just pulled out, hitting oncoming traffic or coming to an embarrassing stop in gear and having a little wobble and stalling its still better than the other two options.