My experience with Gorilla Glue is exactly as Scott describes. It is certainly strong enough to hold, but it does need to be carefully clamped, and even then, there will be some oozing as the glue expands and sets.
My repair job has held up for over a year now, and has been through all sorts of weather.
Good luck,
John Barry
Mechanicsburg, PA, USA
> Depending on the plastic, you may have pretty good
> luck with Barge cement.
> The key to getting a good bond is proper
> application. Thin coats to both
> surfaces, and let each surface dry overnight (don't
> press them together
> (keep them pried apart, in fact)). After each
> surface has thoroughly dried,
> re-activate the glue with a heat gun or a very
> concentrated hit from a hair
> dryer...try to get both materials (not just the
> surfaces) quite warm before
> you push them back together. I've fixed quite a few
> shoes of various sorts
> with this technique...if the plastic is a very low
> surface energy material
> (Teflon or Delrin), you're going to have troubles,
> but it'll hold with
> simple nylon materials for quite a while.
>
> The polyurethane glues (e.g., Gorilla Glue) work
> pretty well in this
> application, too. Do some reading about correct
> application, though....you
> might have issues with the tendency for it to expand
> while curing (which can
> be controlled by clamping between the upper and
> sole). The other thing is
> to keep an eye on the areas where it may ooze out,
> because it will often
> foam up there a little and is difficult to remove
> after it's hardened.
>
> Report back with your results, please.
>
> Scott Minneman
> San Francisco, CA - USA
>
> -----Original Message-----
> From: classicrendezvous-bounces@bikelist.org
> [mailto:classicrendezvous-bounces@bikelist.org] On
> Behalf Of Mitch Harris
> Sent: Tuesday, November 27, 2007 9:10 AM
> To: CR
> Subject: [CR]How to re-glue shoe uppers to soles?
>
> What procedures and what glue would you use to
> reglue uppers to plastic
> soles?
>
> Noticed before that there is some cobbler expertise
> among list-members, and
> I have several pair of cleated cycling shoes whose
> leather uppers have
> pulled away from the plastic soles. On some it's the
> toe, some the heels,
> but about half the upper pulls away. In all cases
> these were pretty lightly
> used NOS shoes. No abuse, no rainy rides.
>
> I could take them to the shoe repair guy who is
> expensive but does a good
> job with stitching repairs and re-soling, but this
> seems like it should be a
> simple matter of knowing the correct glue (?).
>
> BTW, it was early 80s Sidis and Maresis that did
> this. Dettos and Vittorias
> never have, despites decades of hard use. Leather
> soles shoes never have
> either.
>
> Thanks,
> Mitch Harris
> Little Rock Canyon, Utah
>
> p.s. Thanks for all the helpful responses to my
> Simplex QR question
> yesterday. Now if I could just find rubber hoods for
> the Simplex QR levers.
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