3M makes a two sided high strength tape called VHB. It is available in varying widths and thicknesses from industrial rubber and adhesive suppliers. It's fairly pricey at ~130 per roll, though.
How about gorilla glue as an alternative? I believe RBW uses it for head badges.
> I've used the super high strength two-sided tape that's sold at auto parts
> stores for Simplex logos. Super glue might also work. I just glued a bit of
> plastic trim that came off my cell phone with it and it's very strong. Just
> clean off the old glue first.
> Doug Van Cleve <email@example.com> wrote: Chris,
> I thought you might have some idea on this, hope you don't mind me
> forwarding it to you...
> Thanks, Doug
> ---------- Forwarded message ----------
> From: Doug Van Cleve
> Date: Mar 3, 2008 10:37 AM
> Subject: Help: how do I restick my Simplex Super LJ logo?
> To: Classic Rendezvous
> Howdy folks.
> I have an NOS Simplex Super LJ triple front derailleur that has never
> been mounted. I discovered that the Simplex "badge" (just a thick
> sticker as it turns out) has come unstuck from the outer link. What
> is a safe (ie. won't ruin it) and hopefully permanent way to restick
> the logo? I will not use the derailleur at all if there's no good way
> to keep that badge where it belongs.
> Thanks in advance,
> Doug Van Cleve
> Chandler, AZ USA
> Chris Kulczycki
> Velo Orange, LLC
> 214 West Street
> Annapolis, MD 21401 USA
> P, 443-949-8115 F, 443-926-0095