There was I cycling along, not a care in the world when the rim (ie breaking surface) of my rear wheel disintegrated strip wise around part of the wheel. The strip fouled the brake, the inner tube popped out and exploded and the bike stopped dead.
Fortunately I was doing 2 mph on Kingston Bridge at the time not 30mph on the Downs in Wimbledon, so no harm was done.
Too much cycling on towpath grinding paste me thinks!
The upside is that worn out rims, worn smooth knobblies & drive chain with too may miles means that the cost of repair would be prohibitive & I'll have to buy a new bike instead!
There was I cycling along, not a care in the world when the rim (ie breaking surface) of my rear wheel disintegrated strip wise around part of the wheel. The strip fouled the brake, the inner tube popped out and exploded and the bike stopped dead.
Fortunately I was doing 2 mph on Kingston Bridge at the time not 30mph on the Downs in Wimbledon, so no harm was done.
Don't they go with a bang. I had one go like in the dark. I though someone was shooting at me.
-- Xathras have sad life, probably have sad death, but at least there is symmetry
There was I cycling along, not a care in the world when the rim (ie breaking surface) of my rear wheel disintegrated strip wise around part of the wheel. The strip fouled the brake, the inner tube popped out and exploded and the bike stopped dead.
Fortunately I was doing 2 mph on Kingston Bridge at the time not 30mph on the Downs in Wimbledon, so no harm was done.
Too much cycling on towpath grinding paste me thinks!
The upside is that worn out rims, worn smooth knobblies & drive chain with too may miles means that the cost of repair would be prohibitive & I'll have to buy a new bike instead!
Ouch! What are the tell-tale signs of an imminent collapse that can be spotted when inspecting a rim? Most books just say look for wear...
Thanks,
Duncan.
p.k. said:
There was I cycling along, not a care in the world when the rim (ie breaking surface) of my rear wheel disintegrated strip wise around part of the wheel. The strip fouled the brake, the inner tube popped out and exploded and the bike stopped dead.
Fortunately I was doing 2 mph on Kingston Bridge at the time not 30mph on the Downs in Wimbledon, so no harm was done.
Too much cycling on towpath grinding paste me thinks!
The upside is that worn out rims, worn smooth knobblies & drive chain with too may miles means that the cost of repair would be prohibitive & I'll have to buy a new bike instead!
There was I cycling along, not a care in the world when the rim (ie breaking surface) of my rear wheel disintegrated strip wise around part of the wheel. The strip fouled the brake, the inner tube popped out and exploded and the bike stopped dead.
Ouch! Almost anyway!
Quoted message said:
Quoted message said:
Fortunately I was doing 2 mph on Kingston Bridge at the time not 30mph on the Downs in Wimbledon, so no harm was done.
Don't they go with a bang. I had one go like in the dark. I though someone was shooting at me.
I had a cheap tube on the road bike go bang in the kitchen one night. Took me ages to work out what had happened. Nearly shat meself too!
In article <[email hidden]>, Duncan Smith [email hidden] says...
Quoted message said:
Ouch! What are the tell-tale signs of an imminent collapse that can be spotted when inspecting a rim? Most books just say look for wear...
If it feels significantly concave then check it more frequently. If the outside edge starts to spread then replace it. If there are any hairline cracks then replace it immediately (cracks can be very difficult to spot). (Rims can spread a little when the tyre is first inflated, but this should not be progressive.)
In article <[email hidden]>, Duncan Smith [email hidden] says...
Quoted message said:
Ouch! What are the tell-tale signs of an imminent collapse that can be spotted when inspecting a rim? Most books just say look for wear...
If it feels significantly concave then check it more frequently. If the outside edge starts to spread then replace it. If there are any hairline cracks then replace it immediately (cracks can be very difficult to spot). (Rims can spread a little when the tyre is first inflated, but this should not be progressive.)
And occasionally pump the tyre to 50% temporary overpressure which will make the rim go bang if it is on the edge already.
-- Tony
"...has many omissions and contains much that is apocryphal, or at least wildly inaccurate..." Douglas Adams; The Hitchhiker's Guide to the Galaxy
In article <[email hidden]>, Tony Raven [email hidden] says...
Quoted message said:
Rob Morley wrote on 05/01/2007 19:43 +0100:
Quoted message said:
In article <[email hidden]>, Duncan Smith [email hidden] says...
Quoted message said:
Ouch! What are the tell-tale signs of an imminent collapse that can be spotted when inspecting a rim? Most books just say look for wear...
If it feels significantly concave then check it more frequently. If the outside edge starts to spread then replace it. If there are any hairline cracks then replace it immediately (cracks can be very difficult to spot). (Rims can spread a little when the tyre is first inflated, but this should not be progressive.)
And occasionally pump the tyre to 50% temporary overpressure which will make the rim go bang if it is on the edge already.
I'd recommend wearing ear defenders and safety glasses, especially if you're doing this in a confined space. :-)
Ouch! What are the tell-tale signs of an imminent collapse that can be spotted when inspecting a rim? Most books just say look for wear...
Certain types of rim have a wear indicator, in the form of a notch that appears as the rim wears and/or a label on the eyelet surface with indicator markings showing how far the rim can wear before it should be replaced. My Mavics have the label. You can also feel for hollowness I believe, but having never worn out a rim I haven't tried this.
In article <[email hidden]>, David Nutter [email hidden] says...
Quoted message said:
Duncan Smith said:
Ouch! What are the tell-tale signs of an imminent collapse that can be spotted when inspecting a rim? Most books just say look for wear...
Certain types of rim have a wear indicator, in the form of a notch that appears as the rim wears and/or a label on the eyelet surface with indicator markings showing how far the rim can wear before it should be replaced.
ISTM that's when the manufacturer would like you to replace the rim, rather than when you actually need a new one. :-)
There was I cycling along, not a care in the world when the rim (ie breaking surface) of my rear wheel disintegrated strip wise around part of the wheel. The strip fouled the brake, the inner tube popped out and exploded and the bike stopped dead.
Ouch! Almost anyway!
Quoted message said:
Quoted message said:
Fortunately I was doing 2 mph on Kingston Bridge at the time not 30mph on the Downs in Wimbledon, so no harm was done.
Don't they go with a bang. I had one go like in the dark. I though someone was shooting at me.
I had a cheap tube on the road bike go bang in the kitchen one night. Took me ages to work out what had happened. Nearly shat meself too!
Chris
I had a tyre sidewall failure on Wednesday morning. I'd just stopped at a traffic light (even in London we do sometimes ;o))and bang! At first I though it was a firework.
That was at the bottom of a hill so I guess I was lucky too.
I had a tyre sidewall failure on Wednesday morning. I'd just stopped at a traffic light (even in London we do sometimes ;o))and bang! At first I though it was a firework.
That was at the bottom of a hill so I guess I was lucky too.
I had a front wheel sidewall and tube fail explosively going down a steep stony firetrack at speed on a tandem in Finland. Stopping was interesting which my daughter on the back described as scary.
-- Tony
"...has many omissions and contains much that is apocryphal, or at least wildly inaccurate..." Douglas Adams; The Hitchhiker's Guide to the Galaxy
That was at the bottom of a hill so I guess I was lucky too.
Scary thought isn't it. 30mph with a non rotating rear wheel!
Been there done that. Flying down the south downs when the forward lower rear mudguard clip[1] lets go and the mudguard pops out and wraps around the rear wheel locking it solid in a nano second. 2 seconds of apocolyptic fish-tailing follwed by a *big* bang, another 5 seconds of worse fish tailing and an eventual stop amid blue smoke and burnt rubber. Still, my B17 was brown before I started...
And occasionally pump the tyre to 50% temporary overpressure which will make the rim go bang if it is on the edge already.
I pumped just a plain inner-tube up 'till it went bang once. That was in my garage with the door open - my head rang for some time after, and my hearing was out for a little while too. My wife in the house (detached from the garage, so sound having penetrated garage wall, crossed intervening space and entered through house wall) reported the bang was worryingly loud.
A confined inner-tube will probably go to higher pressure and make a bigger bang. Be cautious.
I had a tyre sidewall failure on Wednesday morning. I'd just stopped at a traffic light (even in London we do sometimes ;o))and bang! At first I though it was a firework.
That was at the bottom of a hill so I guess I was lucky too.
I had a front wheel sidewall and tube fail explosively going down a steep stony firetrack at speed on a tandem in Finland. Stopping was interesting which my daughter on the back described as scary.
I've had that on a fast downhill bend on a road bike. Stopping was, as you say, interesting, although somehoe I stayed upright. Manufacturing fault in a new tyre (well, it had been sold as a second).
-- [email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/ ; gif ye hes forget our auld plane Scottis quhilk your mother lerit you, ; in tymes cuming I sall wryte to you my mind in Latin, for I am nocht ; acquyntit with your Southeron ;; Letter frae Ninian Winyet tae John Knox datit 27t October 1563
