Back wheel fell off

Dickieboy

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Can someone shed some light for me, yesterday morning rode up the Black Rock stretch of the A465 Heads of the Valleys road on my 02 GS, bike road beautifully as always.

2.30pm in the afternoon got caught in a torrential downpour coming back down the same stretch of road, rain knocks 20mph off my speed, I get really uncomfortable riding in wet conditions so luckily that means I'm only travelling at 30 t0 35mph (those who know this road know it's a killer and you treat it with respect).

Anyway to the point.. my back wheel fell off, I mean completely off, damaging the rear brake caliper, pads, and scratching the disc. The symptoms immediately before were as follows, While braking very lightly to keep my speed constant I felt the GS start to 'move' beneath me in the same way as a flat tyre would cause it to do, I stop check tyres they are both fine, I move off again this time very slowly, twist the throttle and the front of the bike starts to wobble from side to side, because the movement is being transferred to me via the front I stop again and carefully inspect the front and only give the back a cursory look I can't see anything wrong (I'm looking in the wrong place!) I put the hazards on and try to move off again very very slowly, the front of the bike feels like the suspension assembly//steering is about to just fall apart, at this point I'm just walking the bike hoping I can get to a layby and safety when the back wheel just comes completely adrift, all 4 wheel studs have completely undone and I pick them off the road.
February I fitted a new tyre and put wheel back on using a socket and bar to tighten the studs (didn't torque them but they were on securely), since that time the GS had had a 12k BMW service and was also MOT'd last month. I'm assumming on both occassions the wheels would have been checked but I wasn't present.

Luckily a good mate happened to pass in his HEAT TEAM van about ten minutes later and with help I removed the caliper, managed to get the wheel back on held by 2 studs and crept 2 miles home with my mate covering the rear for me and didn't get killed by anyof the F'ing A holes that overtook my mate and I over the solid double whites.
 
Sorry to hear about you problem, the wheels studs should be tightened upto 105 Nm thats alot and probably more than what you could apply with the supplied tool kit.
 
Firstly....Glad you're ok...

Same thing happened to my housemate on his 1150... wheel nuts wheren't torqued correctly... thankfully he realised what it was just before the wheel came off... :eek

bit of a brown trouser moment... :mmmm
 
I think you can thank your lucky stars the down pour happened when it did to slow you down....... I know that stretch of road' the last time I was down that way was looking at a car well down off the road that some poor soul had lost on the bend..... get yourself a torque wrench quick. as the saying goe's you lucky lucky bas**d.
 
You need a mother of a torque wrench. RIDE magazine's 'best buy' from Halfords won't look at it so check that you can reach 105Nm before you buy. Once you have torqued these studs up you will realise just how tight they need to be and why the toolkit wrench won't look at it. Lucky escape!
 
The correct method is first tighten to 72 Nm to seat the studs, then torque to 106Nm. PLUS!!! Do not use anti sieze or copper slip etc on the studs they should be put in dry, or with a touch of WD40 on the threads at most, this can be a cause for them coming loose! You were lucky, I have heard several instances where the caliper disc etc were scrap.


Welshie :rob
 
Dickieboy said:
... the back wheel just comes completely adrift, all 4 wheel studs have completely undone and I pick them off the road.
Is there a chance some mischievious scrote could have undone them ?? Even if they weren't torqued properly, whats the chances of all 4 bolts falling off at the same time?

Perhaps I'm being too cynical but it just seems a bit strange to me. :nenau
 
I've had a similar experience on my first 1150GS, wheel nuts loosened up after a tyre replacement. Fortunately due to the wobble and weaving I stopped and discovered the problem and tightened up the nuts using the bike's tool kit and I stood on the wrench to make sure they were really tight. Not very scientific but I was scared sh*tless that it was going to happen again and I was like a nervous kitten until I got home and got the torque wrench on it. As has already been stated you must always tighten them up to the specified torque settings . sounds as if you were lucky as things could have been a lot worse. :eek:
 
Thanks everyone for replies , I'll be getting the mother and father of all Torque wrenches at some point today and then learn how to use it!
 
had my tyres replaced yesterday, got home and retightened the studs again (always do that). They were at 120 Nm plus :eek:
 
Dickieboy said:
... I'll be getting the mother and father of all Torque wrenches at some point today ...
Bring it with you to the Hogroast, hire it out for a nominal £1 for people to check their own nuts :mmmm ... and I reckon there should be at least another £100 in it for Bakermans charity.

Everyones a winner. :D
 
I had this happen to my truck after getting new tires.. shop missed the front passenger side tire, the nuts were only on hand tight.. I was on the highway when i got a bit of a shimmy, then heard a small bang. I figured I threw a balancing weight so pulled off to check it just incase.. Everthing looked okay. Started up and it was tracking find so got up to speed when the other bolts snapped.. Tire went rolling off down the road. Got the truck to the side some how and it only touched down on the rotor with it under 10 mph.. Needless to say the shop paid for all repairs and a new set of rims and now after each time I get a tire changed on bike or truck I check the bolts myself at the shop..

Glad to hear you are alright.. Always use the proper tools, don't just wing it when it is your butt on the line...
 
I'm with Taffy on this one - i've never had a torque wrench, and i always use the same technique when putting wheels back on bikes or cars - 2 grunts (aka F*****G Tight!) - it has worked fine for 30 years .... either someone loosened your nuts (unlikely) or the last guy to put them on didn't apply two grunts ... (highly likely!)

Gaz
 
Same thing happened to me except thank God i realised it befor the wheel came off i now use locktight and it works a treat also not too high a grade it basically turns the studs into lock nuts ie wont vibrate open but will open easily when required.Thank your luckey stars.
j
 


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