Stopping in an emergency

[Wise1]

Just curious, with just recently returning to bikes I still find I lock up the back wheel when trying an emergency from about 25mph.

But what about those of you in a real situation, did you lock up or bin the bike or did it go as planned and come to a controlled stop?
____________________
Current - 2007 Suzuki Bandit GSF1250 - 1999 Suzuki TL1000R
Previous - GSXR750 SRAD, Fireblade, ZXR750, CBR600

[Speedy3]

Controlled stop

Lots of frontbreak, Tiny bit of rear, as the bike goes jugger jugger as if its gonna cut out, pull in the clutch

Shoulder obs either side, push to curb, get in right gear/neutral, start up + ride off
____________________
Current bike: 2005 Triumph Speed Triple 1050 :: Previous Bikes: 2001 Kawasaki ZZR-600 E9 (Sold) 1996 Yamaha Diversion 600s (Sold),1997 Honda CB250 Nighthawk (Sold), 1988 Honda VFR 400 NC24 (Written Off), 1987 Honda CB350 S-G (Sold), Yamaha DT125 (Sold), Honda X8R-S 50cc (Stolen)

[virus]

I lock my back wheel up deliberately every now and then, and keep it locked, that way i get better at controlling it when its locked, so hopeful in an unexpected lock-up situation, I can react better.


Cheers
John
____________________
own: 81 xs1100g...
owned: 85 rat CG (sold), 91 GS500e (stolen), 84 gsx400f (scrapped), 81 z250 (siezed, siezed, scrapped), 83 cb250rs (sold), 84 gpz750r ratfighter (killed) 84gpz400 (sold), '80 cb650 ratfighter (wrote off) 95gsx6/12f ratfighter (killed) 91 xj900 (sold)
stinkwheel Well I just had my hands up a pigs fanny. Which makes your concerns pale into insignificance.

[Finglonga]

No need to use the rear brake on emergency stops as when I do it the back wheel is off the ground so no point. Only time its used is if its damp.
____________________
Andy Sez....
F.Y.Y.F.F.

[pyx_e]

..... and then to the chemist for muscle relaxant so you can take a dump in the next year.
____________________
Shiney!
Kawasaki: ER5, Versys, VN900.

[fortknoq]

[Wise1]

I was told at CBT thats its generally 80% front and 20% rear but when its wet then its more 50/50?
____________________
Current - 2007 Suzuki Bandit GSF1250 - 1999 Suzuki TL1000R
Previous - GSXR750 SRAD, Fireblade, ZXR750, CBR600

[fortknoq]

I was told 75/25 and 60/40 wet

[stinkwheel]

If you are braking to the maximum potential of the front brake, the rear wheel is hardly touching the ground.

Different with older bikes like drum braked CG125s and anything made before, say 1985 though, the balance is different and you need to use more back brake on account of the front one being shit.

One serious tip though, could save your life. If you have to suddenly brake on account of a hazard up ahead, whatever is behind you will have to brake equally suddenly. A modern sports bike can come to a halt on a dry road in distances approaching those of a formula 1 car. A business rep driving far too fast and close to the car in front in a Vectra cannot.

Don't be at the back of a queue of stopping traffic, dive up a gap, get someone between you and that rep or you could land up being the filling in a car sandwich.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[deanoet]

I find just gentle pressure on the back brake helps keep it stable
May just be pshycological i guess, but it feels like the back of the bike is squirming around less when the back brake is used

Scary how fast a bike can stop if it is well maintained
First time i stopped sharp on the CG i nearly toppled to the side when i had stopped cos i ended up on top of the tank.
And that was a single front disc and compared to modern bikes very poor stopping power.


Go to a quiet road, or big car park to practise stopping quickly
You dont want to be learning how to brake when you really need to have stopped 2 meters ago.
____________________
---------------------------------------------------------------------------------------------------------------------------------------------
CBT Passed 18th July 2007 : Previous Bikes> CG125 : Current Bike> Hornet 600 : PASSED DAS 30th Oct 2007
---------------------------------------------------------------------------------------------------------------------------------------------

[ajb]

when i had my first crash on my cbr125, i locked the rear (didnt clutch soon enough and stalled).... I hit the car in front... a learning experience
____________________
CBR125R '05 > CB500 '00 > CBR600F '99

[Wise1]

When I was in CBT earlier in the week the instructor said to me

"when you do the emergency dont be afraid to pull the front brakes quite hard, you wont go over the front or loose control, its not a push bike."

So I did, and the the front wheel came away from me and I lost control and the bike went over. I controlled the fall well though

I guess its about applying the right pressure than not just pulling it on hard.
____________________
Current - 2007 Suzuki Bandit GSF1250 - 1999 Suzuki TL1000R
Previous - GSXR750 SRAD, Fireblade, ZXR750, CBR600

[Kickstart]

[K0rnIsAFAGGOT]

tbh, i dont think your going to do it that way if you do have to stop in an emergency. I know i wont

[steve32]

dont forget engine stop first
____________________
suzuki GSX 600F katana .: ~my bike up for sale~ :.
CBT = Completed
DAS= Working on it - theory test = Passed

[steppen22]

You should always drag your left foot on the ground, for extra stopping power.
____________________
no regrets, no retreat, no apology.
I've made mistakes in the past, and I apologise for FUCK ALL.

[Skudd]

Linked brakes and ABS.
____________________
Famous last words of Humpty Dumpty. " Stop pushing me "
Petty Anarchists look at "1984".............. The Visionary looks at "Animal Farm".

[Wafer_Thin_Ham]

[Wise1]

Thanks, was out trying it a bit more earlier, definatey works much better as you say starting off lightly then building to max, I never realised just how efficient the front brake was, might need some padding on the tank for next time
____________________
Current - 2007 Suzuki Bandit GSF1250 - 1999 Suzuki TL1000R
Previous - GSXR750 SRAD, Fireblade, ZXR750, CBR600

[deanoet]

Yeah, you need to let the weight gradually move forwards so you get more pressure on the front wheel so it grips better as it is being pushed into the road

If you slam the front brake on, it locks up as there isnt much weight to push it down, and then the weight goes onto it once locked, so it gets pushed out from under you and you end up tarmac surfing
____________________
---------------------------------------------------------------------------------------------------------------------------------------------
CBT Passed 18th July 2007 : Previous Bikes> CG125 : Current Bike> Hornet 600 : PASSED DAS 30th Oct 2007
---------------------------------------------------------------------------------------------------------------------------------------------

[Rockhopper]

[colin1]

Even if bikes cant usually outbrake normal cars, in a test, I suspect that in real world conditions, the bikers will be paying more attention, and will be more comfortable braking very hard if needed.

Obviously I cant prove this, its just what I believe.

I wouldnt want to brake as hard as possible on the road unless I was sure there was nothing behind me.

The emergence stop on the test is pretty tame.

Often on the road someone is tailgating me, so I leave an even bigger gap than usual between me and the car in front so that if I do need to slow, it wont be too sudden for the guy behind.

This has saved my ass a couple of times.

I dont agree with deanoet that you need to brake softly initially then harder.

I think its the other way round. The wheel is more likely to lock when you are nearly stationary.
____________________
colin1 is officially faster than god

[Kickstart]

[Wise1]

Thats an interesting point, while out testing I did find that its when you slowing right down that the wheel locks up if your pulling to hard.
____________________
Current - 2007 Suzuki Bandit GSF1250 - 1999 Suzuki TL1000R
Previous - GSXR750 SRAD, Fireblade, ZXR750, CBR600

[5v3d3b0]

I always seem to skid with the rear if I get in a brown situation. That's why I can't be bothered to bleed my rear: I don't want it to be good XD
You have to remember that when you brake hard with the front, you have very little pressure on the back wheel, so it locks up very easily. I would bet money that it takes at least 10 times more pressure to skid with no front brake applied than with hard front brake applied