Re: [CR] (Minor?) Frame Damage: What Are My Options?


Example: Events:Eroica

Date: Fri, 31 Jul 2009 08:20:25 -0500
From: Eric Burns <theej@mchsi.com>
To: Anthony Taylor <ajft1942@yahoo.com>
References: <COL113-W49B711541ADD977304BBADF5100@phx.gbl> <4A727592.2020507@mchsi.com> <338678.53779.qm@web84103.mail.mud.yahoo.com>
In-Reply-To: <338678.53779.qm@web84103.mail.mud.yahoo.com>
Cc: CR discussion list <classicrendezvous@bikelist.org>
Subject: Re: [CR] (Minor?) Frame Damage: What Are My Options?


Anthony Taylor wrote:
> Eric,
>
> "Stop drilling" as it is known is a widely accepted method for stopping
> crack propogation. It is even commonly used in the aviation industry.
> The only thing you need to be careful of is that you really catch the
> end of the crack (they often extend beyond the point where they are
> visble to the naked eye). The best way to determine this is to have a
> "liquid penetrant test" performed. Chech your local phone book under
> "test labs". Weld repair is the best permanent repair. A good local body
> shop can do this for you.
>
> Hope this helps.
>
> Tony Taylor
> Manchester NH
>
> Matthew,
>
> The easiest way is to drill the bottom of the crack, an 1/8" hole should
> be fine.
>
> Take the seatpost, insert it to the depth of the slot and gently pry the
> top of the seat tube 'till the slot sides are parallel and the ears are
> straight.
>
> If you have access to reamers, use them to clean up the inside of the
> seat tube, if not at least use a round file to clean up the slot and
> around the top so it won't mark up your new seatpost.
>
> Find a long, MB type seatpost in the proper size, probably 27.2mm. The
> long seatpost will extend way past the crack and will eliminate any
> further stress on that area.
>
> You should be able to ride it for years that way, but do glance at it
> from time to time <g>
>
> The proper repair would be to have the seat tube replaced, but that is a
> bit more involved and and pretty expensive too.
>
> Have fun,
>
> Rick Burns
> Streator, IL usa