Wait untill its totally nontacky

In this heat, its practically dry on contact !!

Maybe thats half the problem............. doh

I remember from Grant's tyre changing seminar in Ripley that you don't inflate a patched tube for about 15 minutes until the glue has set properly.

This might be a factor on new patches but doesn't explain old ones separating.

set fire to the glue. let it burn on the tube for a few seconds, then blow it out and apply the patch.

I would as others suggest, wait until the glue is practically dry to the touch and use lots of talc. before on this forum people decried it when I advised the use of talc but it works. and I have been using it since 1961.

also in that heat would it be possible to add another few pounds of tyre pressure (say 5) that would lessen the activity between tyre and tube.

Are they rubber or butyl tubes? Different patches as rubber patches do not bond to butyl I was told by a tyre fitter in UK. He sold me some butyl patches and all has beed good.

Can you actually buy rubber tubes anymore ???