Ummm that was close!

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!

Shame!

pk

On 05/01/2007 18:09, 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

Now you know why it's called a "breaking" (sic) surface :-)

--
Paul Boyd
http://www.paul-boyd.co.uk/

"p.k." wrote:

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

p.k. wrote:
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!

Shame!

pk

Been there...!

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.

On Jan 5, 6:09 pm, "p.k." wrote:
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!

Shame!

pk

Xathras writes:

"p.k." wrote:

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!

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
--
Chris Eilbeck

In article . com,
Duncan Smith
says...
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.)

Rob Morley wrote on 05/01/2007 19:43 +0100:
In article . com,
Duncan Smith
says...
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 , Tony Raven
says...
Rob Morley wrote on 05/01/2007 19:43 +0100:
In article . com,
Duncan Smith
says...
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. :-)

On 2007-01-05, Duncan Smith wrote:
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.

Also:

http://yarchive.net/bike/rim_wear.html

Regards,

-david