So somehow I managed to go 7 months without a flat tire while riding 5-6 times a week, only to suffer two flat tires on the same day yesterday. One was due to a blackberry thorn. The other was likely the same thing, but since it was on my 36er with a Foss tube I did not bother looking to find out as I currently have no way to repair it.
So I’m thinking now that the blackberries around here are growing like mad, (we have particularly nasty blackberries in the pacific NW), I should be taking some measure to try and prevent this in the future. My inclination is to add a thin layer of tire slime between my tube and tire, a thin layer around the bead of the tire and a small amount inside the tube.
Years ago I set up a bike to be thorn proof using tire liners, heavy duty tubes and a generous amount of slime inside the tubes and it genuinely was thorn proof after that. It was also sluggish and felt like pedaling a paddle boat with a dragging anchor.
This time around I want a little better thorn resistance, but at the lowest cost in performance possible. Anybody have any better ideas on how to achieve this?