"Slime" tire sealant is acceptable for mt bikes but has anybody tried it in high pressure clincher tires? I decided to try it for an experiment.

I couldn't find any Slime brand 700 c tubes so I made my own by cutting a narrow slit in my tube and squirting the slime in the tube. After patching the slit I mounted the tire and punctured the tire a few times to see if it would hold. So far so good. I wondered if the low air volume and high air pressure would prevent it from working but it's holding fine. It lost maybe a little air pressure before the Slime kicked in but it beats the hell out of replacing a tube out on the road.

Next I'll look into the "Stans" method of tubeless tires on a road bike. Basically you replace the tube with latex sealant.

I hate flat tires, I'll gladly take the trade off of added rolling weight for fewer flats.