Fixing a bent mech. hanger ;-(

[Zardoz]

Just repaired my bike (faulty shifters) lovely ride etc etc
but two miles from home I managed to throw the rear mech
into the spokes.

I've taken the chain and the mech off and most of the damage
seems to be with the hanger (it's a Peugeot frame, alloy
tubing), twisted and bent inwards. I've bent it back a
little way with mole grips. Anyone got any good tips to true
it up? I've got access to a workshop if I need to make a
jig... but it might be easier to try my trusty LBS.

Nice evening ride though :-) And I've got my MTB for
tomorrow :-))

Z

[Mseries]

Zardoz wrote:
> Just repaired my bike (faulty shifters) lovely ride etc
> etc but two miles from home I managed to throw the rear
> mech into the spokes.
>
> I've taken the chain and the mech off and most of the
> damage seems to be with the hanger (it's a Peugeot frame,
> alloy tubing), twisted and bent inwards. I've bent it back
> a little way with mole grips. Anyone got any good tips to
> true it up? I've got access to a workshop if I need to
> make a jig... but it might be easier to try my trusty LBS.
>
> Nice evening ride though :-) And I've got my MTB for
> tomorrow :-))
>
> Z

Park Tools do a device for checking the alignement, would be
easy to copy IMHO, check out their website.

[Sandy Morton]

In article <2gsmshF6d4niU1@uni-berlin.de>, MSeries
<skankmartin@hotmail.com> wrote:
> Park Tools do a device for checking the alignement, would
> be easy to copy IMHO, check out their website.

Copyright? They may have spent a lot of devlopment time
on the jig?

--
A T (Sandy) Morton on the Bicycle Island In the Global
Village http://www.millport.net (http://www.millport.net/)

[Simon D]

"Simon Brooke" <simon@jasmine.org.uk> wrote in message
news:75rnn1-i08.ln1@gododdin.internal.jasmine.org.uk...
> in message <bn8ia0hmt94e9gdkvq1hl3tefa0pt3uldl@4ax.com>,
> Zardoz ('thing@thing.thinger') wrote:
>
> > Just repaired my bike (faulty shifters) lovely ride etc
> > etc but two miles from home I managed to throw the rear
> > mech into the spokes.
> >
> > I've taken the chain and the mech off and most of the
> > damage seems to be with the hanger (it's a Peugeot
> > frame, alloy tubing), twisted and bent inwards.
>
> Is it a sacrificial replaceable hanger, or just part of
> the frame? If the former, get a new one and breathe a sigh
> of relief. If the latter, you're probably in for grief.
> Alu frames don't like being bent.

I agree with Simon - you'll need to be careful if it's an
integral aluminium hanger.

If you feel that you can straighten it, it's possible that I
may be able to help you, because I have one of the Park
tools to which someone else has

both ways, unfortunately, because it's heavy - I suspect
that the LBS repair would be cheaper. Let me know if I can
help; I obviously don't want anything for its use.

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[Zardoz]

>If you feel that you can straighten it, it's possible that
>I may be able to help you, because I have one of the Park
>tools to which someone else has

>both ways, unfortunately, because it's heavy - I suspect
>that the LBS repair would be cheaper. Let me know if I can
>help; I obviously don't want anything for its use.

Thanks for the offer. It's a Reynolds alloy which is some
sort of steel (and there's not a replacable dropout).

I'll drop it in the LBS and have them sort it out.

[Pete Biggs]

zardoz wrote:
> It's a Reynolds alloy which is some sort of steel (and
> there's not a replacable dropout). I'll drop it in the LBS
and have > them sort it out.

More work with the mole grips could possibly sort it but it
would indeed be more sensible to leave it to the LBS if you
can't easily get the angle correct.

~PB