Chas:
That is also my experience with current production glues. On the bright side, you can apply initial coats of Vittoria or Conti to new tires and be ready to recoat and mount tires within an hour or less in warm conditions. While I'd give at least a 12 hour cure before riding, it wouldn't surprise me if that could be shortened a lot. Hard to know whether the changes in formulation were a consequent of VOC reduction requirements or the desire for reduced time in mounting tubulars. Seems to obviate the need for Fastack which I have always avoided due to concerns of ripping base tape off when attempting removal. Anecdotal, perhaps but I wasn't willing to find out.
One solution may be to just recoat your spares with a light dressing at intervals and rely more on residual tackiness of the glue on the rim bed after removing the flatted tire. Alternately, a spare with a sufficient base coat of glue could probably be wiped lightly with a naptha (ligher fluid) soaked rag to restore tackiness in the surface layer of the glue without damaging base tape adhesion to the casing. This could be done to the glue on the rim bed with less risk. Of course, that approach poses the additional challenge of how to carry a solvent along or walking to the closest gas station for a thimblefull of gasoline.
Charlie Young
Honey Brook, Pennsylvania USA
> I'm looking for some tubular rim cement that remains tacky enough to
> change tires on the road and not have to worry about the tire coming off.
>
> I used to use Pastali back in the 70s and 80s. I could change a recently
> mounted tire and Pastali was usually tacky enough that I didn't have to
> re-glue it.
>
> Earlier this year I pulled about 4 old tires off that I'd glued with
> Pastali in the late 70s. It was still soft and almost tacky plus held very
> well after 30 years!
>
> I've tried Vitoria, Continental and the new Pastali which is not the same
> as the old stuff.
>
> It seems that current rim cements are not designed to remain sticky once a
> tire is removed and require re-gluing which isn't convenient on the road.
>
> Any recommendations?
>
> Chas. Colerich
> Oakland, CA USA