Less than amusing off...

[Bigmanbike]

Ok, so I've owned my ex-demo 1150 Adv since 2005. Only time it missed a beat was when he stupid alloy washers they put on the rear brake system gave out fun afternoon on the drive. Since then, all fine. But, rode it a month ago, and got a loss of power and rough running going up a hill 15 mins into a ride, Changed down to get a bit more go to get to a pull in, back wheel locked up and high-sided me down the road. Bunch of broken ribs, damaged wrist etc, but lucky to be alive given I landed on the wrong side of an A road. Superficial damage to bike. Have since run it on the drive - perfect. Was 1/2 through tank of fuel, so contanimation unlikely. Nothing else new/changed on bike. Assume if was coils or Hall Sensor, would not be running fine now. Any ideas?

 

[Barnoe]

That's unlucky pal,
but glad you hear to moan about it

Someone with more tech knowledge of your 1150 will be along soon, I'm sure.
Hopefully with an answer to what likely caused it to lock up.

 

[Bigmanbike]

That's unlucky pal,
but glad you hear to moan about it

Someone with more tech knowledge of your 1150 will be along soon, I'm sure.
Hopefully with an answer to what likely caused it to lock up.

It's taken me this long to post as it's only this week I can laugh without screaming....

 

[ChasF]

Sounds very odd to me. Are you sure that it was the engine? Could the loss of power be a result of something beginning to bind up or seize in the gearbox or final drive?

Glad you’re OK.

 

[Bigmanbike]

Sounds very odd to me. Are you sure that it was the engine? Could the loss of power be a result of something beginning to bind up or seize in the gearbox or final drive?

Glad you’re OK.

Thanks. I think not, though not knowing another cause.... 1. There was def a loss of power/some rough running just before. 2. It wheeled onto the trailer (a grass cutting outfit driven by a fellow m/c rider 2 cars back that scraped me and the bike up) fine at the time, and a friend rode up the road to the house from where they dropped it off fine a couple of days later.

 

[Loiq]

the only thing I had was a fuel pump issue, when on a longish right hand bend the bike would want to plough in.... loss of power and when I righted the bike power came back but made the cornering a more complex than I had first thought...

I did manage to lock the rear wheel when changing down too fast effectively I had more road speed than speed at the drive wheel and that made the bike skip about...

if someone has ridden it, all I can think of is getting a dealer to check the fault codes..? if there's any evidence..? so to speak...

cleaning the tank out isn't a bad idea, they do get all manner of crap in there from condensation etc....

wasn't the an issues ages ago with the ABS going mental on a few bikes and locking the rear wheel...? try to reset the ABS I think it's a sequence of holding the buttons on the top and being in position 2 on the ignition..? can't recall... the exact process...

 

[leadfarmer]

If it was losing power when you changed down it probably just stalled/cut out when you pulled the clutch in, that would be a simple explanation for the locked wheel

 

[JohnnyBoxer]

Whereabouts in UK are you located?

 

[Riceburner]

If it was losing power when you changed down it probably just stalled/cut out when you pulled the clutch in, that would be a simple explanation for the locked wheel

Sorry - but that doesn't make sense.

If the clutch was pulled in, then the engine and gearbox/final drive are no longer connected. Would indicate the lock up would be caused by something in the gearbox/final drive, not the engine stalling, well, unless the clutch was then dropped on a stopped engine...



Apologies for pedantry in the thread: I Hope you're recovering well Bigmanbike.

 

[leadfarmer]

If the clutch was pulled in, then the engine and gearbox/final drive are no longer connected

I know

But if he's pulled the clutch in and dropped it down a gear, when he's dumped the clutch and given it a handful, instead of the expected brum brum he's got a stalled engine with a low gear engaged.

Like dropping anchor

 

[Ogmios]

You mention hall sensor;
when mine went if i 'jiggled' the wiring it would run perfectly / then cut out / then run perfectly.
No idea if that helps - but worth a 'jiggle'.

 

[stever1]

Sorry - but that doesn't make sense.

If the clutch was pulled in, then the engine and gearbox/final drive are no longer connected. Would indicate the lock up would be caused by something in the gearbox/final drive, not the engine stalling, well, unless the clutch was then dropped on a stopped engine...



Apologies for pedantry in the thread: I Hope you're recovering well Bigmanbike.

Yes it does make sense.
clutch in on a stalled engine disengages the drive.
clutch out. Everything locks up.
possibly causing the backend to skid.

 

[dean0n0]

If the gearbox tightened up it could feel like loss of power, and even with the clutch in it still locks the wheel. When it's cooled it all seems good again?

 

[Bigmanbike]

Whereabouts in UK are you located?

Not a million miles from Guildford...

 

[Bigmanbike]

If the gearbox tightened up it could feel like loss of power, and even with the clutch in it still locks the wheel. When it's cooled it all seems good again?

It was a surging, on/off type of power loss - akin to fuel starvation or a misfire. Eveything was loose enough in the immeditate aftermath to wheel it onto/off the trailer...

 

[Riceburner]

Yes it does make sense.
clutch in on a stalled engine disengages the drive.
clutch out. Everything locks up.
possibly causing the backend to skid.

Did you actually read the entirety of my post?



Anyway.....




To me the initial symptoms smack of coil-stick failure or possibly headstock loom wiring breakages. The lock up is less explainable to me because someone who's owned an 1150 that long isn't going to be the type to dump the clutch in a low gear when travelling at over 30-ish... but in the heat of the moment, anything is possible. Does that sound like something you'd do, Bigmanbike?

 

[Bigmanbike]

Did you actually read the entirety of my post?



Anyway.....




To me the initial symptoms smack of coil-stick failure or possibly headstock loom wiring breakages. The lock up is less explainable to me because someone who's owned an 1150 that long isn't going to be the type to dump the clutch in a low gear when travelling at over 30-ish... but in the heat of the moment, anything is possible. Does that sound like something you'd do, Bigmanbike?

Nope, only clicked down one gear and was losing speed at the time anyway. Can't get anything to happen with wiggling looms. It "felt" like fuel starvation, but then I've never had a coil failure, so wouldn't know how that behaves. Thing is, it was a cold wet morn, early into a ride, so not really hot, and when run up to temp on the drive, seems to be running perfecty, holding revs etc. Pain in the...ribs...

 

[Loiq]

fuel starvation was the exact feeling I had my arse twitching moment, but it stopped when the bike came upright... but then I ran out of road...! which make the twitching moments worse again....!

 

[ChasF]

Nope, only clicked down one gear and was losing speed at the time anyway. Can't get anything to happen with wiggling looms. It "felt" like fuel starvation, but then I've never had a coil failure, so wouldn't know how that behaves. Thing is, it was a cold wet morn, early into a ride, so not really hot, and when run up to temp on the drive, seems to be running perfecty, holding revs etc. Pain in the...ribs...

I would have thought that, even if the engine had cut at the instant you pulled the clutch in to click down one gear, if you then released the clutch it wouldn’t result in a back wheel lock up. Explaining why the engine runs fine now is something else.

 

[Bigmanbike]

I would have thought that, even if the engine had cut at the instant you pulled the clutch in to click down one gear, if you then released the clutch it wouldn’t result in a back wheel lock up. Explaining why the engine runs fine now is something else.

Big amount of compressinon in that engine and resistance through the drive chain, plus wet road. If you put it in first and try to push it down the road, it just skids... Bit of Googling reveals I'm not the only one it happened to.