In a message dated 1/31/11 10:06:11 AM, firstname.lastname@example.org writes:
> The single best way to restore the colour and sheen of black Delrin on
> Simplex derailleurs, Stronglight Hinault headsets and everything else made in
> this wonderful material is: OIL. This is why Delrin was used (and still
> is) used for engine mountings etc., it's actually nourished not degraded by
List members who has WD-40!
I have sprayed WD-40 on to dried up Simplex, the black plastic became much darker, it did gain back 30 years.
KEN TODA, High Point, NC