Just binned my bike, anyone else experienced this.

[fatbaldbob]

That is just for the accident damage, I guess any investigative work into the cause will be at my expense, they have said they will look into it, but he didn't seem too enlightened into what it may be?

 

[jimbo]

The other day I switched off the ignition on my bike in 4th on a wet road - I simply refused to believe that it could cause a lock-up. There was little or no difference to closing the throttle.
Unless your roads really are pollished marble, IMHO you are mis-diagnosing the problem.

 

[(RIP) Kaister]

make sure they change the side stand switch , hall sensor and ignition barrel wiring loom then.

 

[Carl]

The other day I switched off the ignition on my bike in 4th on a wet road - I simply refused to believe that it could cause a lock-up. There was little or no difference to closing the throttle.
Unless your roads really are pollished marble, IMHO you are mis-diagnosing the problem.

Maybe in 4th... but try dropping a couple of cogs and dumping the clutch at slowish speeds, the back end will squirm and skid on a wet/slippery surface. Mine does it even with my 17 stone on the back its quite good fun (as long as you are upright and expecting it )

 

[Engineer]

I am an Engineer but NOT an automotive one - so if this is a numpty question then forgive me.

Is it possible for a faulty injection system to pour in fuel rapidly enough to cause partial hydraulic lock if the fuel is not burnt?

 

[davegs]

Lockups

I have had some serious lock ups whilst going for it around the Alps, espeically changimng down too quick and the back goes into a slide very scary!! the back appears to bit light and if it's shut off quick the engine is only a twin and high compression and provides a lot of braking slightly sliipy riad and it will lock up and I am sure this is whats happend notyhing wrong with the bike but this is how they are and quick blip of throttle will prevent the back wheel locking up. If the pots filled up with petrol you would probably damage the engine through hydrolic lock. So a quick blip on cahnging down and all will be well, I know cos I've done it many times and also frightend my self to death!! .
Dave ( I hate christmas ) GS.

 

[Paul Wakefield]

provides a lot of braking slightly sliipy riad and it will lock up

I don't believe it will lock up. You may lose grip but that is not the same thing.

 

[davegs]

I don't believe it will lock up. You may lose grip but that is not the same thing.

This is what was ment the back whell locks up not the engine if it had damage would result.
It will feel like an engine
lock up and still have you off if you've never experienced it before.

 

[ianboydsnr]

Mine has locked up, but only when I first got it, to high a gear to low revs, I cant see how it would lock up, if in the right gear, or you dont change down and dump the clutch, other than a siezure.

 

[bladerunner]

Slightly off topic, sorry, but re-reading this, the most amazing thing is that our Bob types into UKGSER before the recovery truck comes and before he finds out whether he's broken his thumb or any ribs.

Gotta admire your priorities, sir!!

 

[Basri]

Did not read all posts but if engine dies rear end will not lock, l think we all agree about it.
l think it is the opposite way, rear end locks than engine dies...

Same thing happened to me with the front wheel.

'94 R1100GS, 105k km. Factory hoses on it.

2 months ago no problem while running but going down hills on neutral, slow speeds bike slowed down, something holding the bike.
Someday bike on centerstand, found the front wheel is not rotating, calipers holding the discs, after 5 minutes they released the discs.

Checked pads, pistons, all fine, did not care much.

Next day front wheel stucked at all, luckyly did not have an accidend. Released after 1 hour itself.

Reason was;

Hose above front fender worned inside. When pump the brake oil moves forward but worned hose does not let it back for a while, at last did not let the oil back at all.

Changed the hose and running well since than.

Yes, brake hoses are an impotant issue, we all should replace them on older bikes...

This seems like an inside worned rear break hose to me.

Pumped the rear brake, worned hose does not let the hydrolic back, locks the rear wheel, kills the engine.

After some time releases the oil back, all so fine till you hit the brake again.

Might sound nonsence but give it a think, check the brakehoses.

Basri...

 

[Noddy]

Interesting post Basri.

 

[fatbaldbob]

Slightly off topic, sorry, but re-reading this, the most amazing thing is that our Bob types into UKGSER before the recovery truck comes and before he finds out whether he's broken his thumb or any ribs.

Gotta admire your priorities, sir!!

Thumb was bust, 3 weeks in a cast and now splinted for another 3 plus a cracked rib. I was just seriously pissed off and wanted to sound off about it, and what else would I do whilst waiting for the bike to be recovered. But I am still keen to get shot of the bike if no definitive answer can be found as to the cause, despite the ongoing debate I know it happened to me and I'm as keen to know why as everyone else, but I don't want to spend a fortune replacing bits that may / may not be causing problems. So without a plausible easily fixed diagnosis, it's going.

 

[digga]

I am an Engineer but NOT an automotive one - so if this is a numpty question then forgive me.

Is it possible for a faulty injection system to pour in fuel rapidly enough to cause partial hydraulic lock if the fuel is not burnt?

Now i'm a numpty.... a self confessed one but i would very much doubt that the injection system can inject that much fuel in the milliseconds that the inlet valve is open
1200cc bike = near on 600cc of fuel into the pot to hydraulic plus it would surely bend the con rods and god knows what else

 

[vilguy]

Why not just take the 3K and repair it yourself? Look around and im sure you will manage to get most of the bits you need for around £500 or so. And you can sort out the "problem" as you go as well as netting yourself a nice holiday to boot!

 

[elevensies]

I would sh1t my shorts if that had happened to me, glad your ok ish, will be an interesting find on the cause, if one can be?

 

[Sparky]

Interesting post. I've had similar experiences with my 1100GS when slowing down whilst approaching a roundabout at slow speed (1st, 2nd, & 3rd) with a reasonably cold engine, where I have put the fast idle control (Old Choke), in too soon and the engine has died.
Recovery has been to pull in the clutch and re-start the engine and engage the fast idle control to give a little more revs to the engine. Although once the engine is warm I've had no further problems.

 

[Packer]

1200cc bike = near on 600cc of fuel into the pot to hydraulic plus it would surely bend the con rods and god knows what else

Ahh but 1200 = swept volume = the volume between the piston at the top of its travel and that at the bottom. With a 10:1 compression ratio you'd only need slightly over 60cc to hydraulic it. Still can't happen though, the holes in the injectors are way too small for that kind of flow rate.

The brake hose scenario is definitely a possibility and if in a low enough gear, I would guess 1st or 2nd, I can believe that a stalled engine may cause the rear wheel to slide so Hall sensor, ignition switch, kill switch, associated loom sections and sidestand switch are all possible suspects.

 

[karlp]

I cannot believe some of the replies on this thread.

To diagnose properly certain info is required - people are assuming so many different scenarios.

1. What speed were you travelling when the bike locked

2. What gear

3. Any unusual noises beforehand

4. Any unusual noises after the event.



How come it is possible to jump start a bike - with higher compression ratio- than a GS just by pushing it in top gear.

 

[karlp]

I'm with Paul....unlikely to be lube, it doesn't happen like that.



.........- loss of power as the fuel gets stopped then cutting the engine (which DOES cause a lock up- same as changing down two cogs and dumping the clutch does!) then starting up again fine when the bike is righted and the clog swills away .

QUOTE]

The rear wheel does not lockup when you change down two cogs and dump the clutch it actually spins at a lower speed than it should be and hence gives the sensation of locking. This situation can be corrected by increasing the rpm of the engine.