Weird accident

Harold A. Davison said:

Went for my New Years ride today. Climbing a hill and

shifted down

Quoted message said:

to my "granny", heard a weird shifting noise and then a

"bang" and

Quoted message said:

parts of the rederailor and jockey wheel went through my

back wheel,

Quoted message said:

bent the rear dropout and probably knocked the rear wheel

out of

Quoted message said:

true. Anyone have any ideas about what would cause this?

Can the

Quoted message said:

rear dropout be straightened, frame is steel. Thanks for

any help.

It sounds like you shifted your derailleur into your spokes.
This is an indication that your derailleur was out of
adjustment -- the lower adjustment screw should not allow
movement this far.
I've had this happen to me once, in the winter when there
was substantial ice in the derailleur. I don't know whether
the presence of ice somehow overrode the adjustment screw.

I would think the steel frame could be straightened, but you
need a more local opinion.

--
Mike Kruger
Too many people spend money they haven't earned
to buy things they don't want
to impress people they don't like. -Will Rogers

Mike Kruger said:

Harold A. Davison said:

Went for my New Years ride today. Climbing a hill and

shifted down

Quoted message said:

to my "granny", heard a weird shifting noise and then a

"bang" and

Quoted message said:

parts of the rederailor and jockey wheel went through my

back wheel,

Quoted message said:

bent the rear dropout and probably knocked the rear wheel

out of

Quoted message said:

true. Anyone have any ideas about what would cause this?

Can the

Quoted message said:

rear dropout be straightened, frame is steel. Thanks for

any help.

It sounds like you shifted your derailleur into your spokes.
This is an indication that your derailleur was out of
adjustment -- the lower adjustment screw should not allow
movement this far.
I've had this happen to me once, in the winter when there
was substantial ice in the derailleur. I don't know whether
the presence of ice somehow overrode the adjustment screw.

I would think the steel frame could be straightened, but you
need a more local opinion.

It's also possible that the quick release slipped because it wasn't
tightened down enough. Since you shifted to the granny, you may have
been putting more than usual pressure on the chain.

--
Bob Wheeler --- http://www.bobwheeler.com/
ECHIP, Inc. ---
Randomness comes in bunches.

In article <1104708253.988e861168b9580a68e3a63b0ee1ae77@teranews>,

Mike Kruger said:

Harold A. Davison said:

Went for my New Years ride today. Climbing a hill and

shifted down

Quoted message said:

to my "granny", heard a weird shifting noise and then a

"bang" and

Quoted message said:

parts of the rederailor and jockey wheel went through my

back wheel,

Quoted message said:

bent the rear dropout and probably knocked the rear wheel

out of

Quoted message said:

true. Anyone have any ideas about what would cause this?

Can the

Quoted message said:

rear dropout be straightened, frame is steel. Thanks for

any help.

It sounds like you shifted your derailleur into your spokes.

Or maybe forcibly pedalling through chain suck, with the
doubled-over portion of chain going through the rear der?
In wich case a bent granny ring could very well be causal.
Steel grannies can be manhandled more-or-less straight
again, with make-do prying implements such as very
large screwdrivers.

cheers,
Tom

--
-- Nothing is safe from me.
Above address is just a spam midden.
I'm really at: tkeats [curlicue] vcn [point] bc [point] ca

"Harold A. Davison" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Went for my New Years ride today. Climbing a hill and shifted down to my
"granny", heard a weird shifting noise and then a "bang" and parts of the
rederailor and jockey wheel went through my back wheel, bent the rear
dropout and probably knocked the rear wheel out of true. Anyone have any
ideas about what would cause this? Can the rear dropout be straightened,
frame is steel. Thanks for any help.

I saw it happen to a road bike once (105 components), we never could
determine what caused it, it broke and bent spokes, derailleur hanger,
messed a lot of stuff up. The rider was just mounting the bike and
starting to pedal when all the noise started and the wheel locked up.