[Moto700]

Originally Posted by froze

The air pressure thing has been answered so no need to go there again.

Slime tubes don't work at all once the pressure exceeds about 65psi, the force of the air pressure just blows the slime out of even the smallest of holes and your flat again. The stuff works great in MTB tires. In addition the presta valves Slime tubes use on their road tubes are the cheapest crappy designed valves I've ever encountered. However I don't recommend Slime tubes at all! Your first line of defense against flats is the tire, find a great tire like the Schwalbes, or Specialized Armadillo and flats will be greatly reduced. Next line of defense would be a liner like the Slime liner or Mr Tuffy; the last line and least effective is the tube. But I would try a better tire BEFORE adding a liner to see it that alone will work for you. Your always going to have flats, you just want to try to reduce the frequency of such without adding weight of liners and heavy tubes such as thorn resistant tubes or Slime tubes.

I had 7 flats in 7 weeks until I went to a slime tube. Flats since then=0. And I run my tires, Panaracer Cyclocross, at 70 psi. No flats.

[froze]

Originally Posted by Moto700

I had 7 flats in 7 weeks until I went to a slime tube. Flats since then=0. And I run my tires, Panaracer Cyclocross, at 70 psi. No flats.

Cyclocross tires do not take as much pressure as road tires, Slime may work for very small holes up to around 65 so your pushing the limit of Slime at 70, or your pressure gauge is wrong and your actually running less then you think.

Slime will ruin your rim tape too, and some tire manufactures strongly recommend against using Slime in their tires, not sure what Panaracer recommendations are you may have to e-mail them to get that info.

[Moto700]

Originally Posted by froze

Cyclocross tires do not take as much pressure as road tires, Slime may work for very small holes up to around 65 so your pushing the limit of Slime at 70, or your pressure gauge is wrong and your actually running less then you think.

Slime will ruin your rim tape too, and some tire manufactures strongly recommend against using Slime in their tires, not sure what Panaracer recommendations are you may have to e-mail them to get that info.

Recommended PSI on the tire is 35-70. I use both a digital gauge and the gauge on my floor pump so I doubt if they are both wrong. I could care less if the rim tape is ruined. I replace that when I have flats anyway. I have free service for live on my bike where I bought it and only pay for parts ( I know others may not have that available) and cleaning the inside of the tire and replacing the rim tape is a problem for my LBS. Unless, of course, I do have a flat on the road, and if I can't put it on the bus rack or push it back and must change it then that's what I need to do. But, to this point after replacing the tube and using a Slime tube I have not needed to replace a tube.

[froze]

Originally Posted by Moto700

Recommended PSI on the tire is 35-70. I use both a digital gauge and the gauge on my floor pump so I doubt if they are both wrong. I could care less if the rim tape is ruined. I replace that when I have flats anyway. I have free service for live on my bike where I bought it and only pay for parts ( I know others may not have that available) and cleaning the inside of the tire and replacing the rim tape is a problem for my LBS. Unless, of course, I do have a flat on the road, and if I can't put it on the bus rack or push it back and must change it then that's what I need to do. But, to this point after replacing the tube and using a Slime tube I have not needed to replace a tube.

Now the question is why do you put the max psi in those tires? You shouldn't have to unless your a Clydesdale. If you want try this psi calculator, but use only the second one, the first and third aren't as important, see: Bicycle tire pressure calculator

[Moto700]

Yup, tried it. Got weighed Monday at my MD's office. Scale said 212, which think is over, I'm more like 200. So, using 200 lbs. and a 32mm wheel I went over or the rear, calculator says 74, under on the front and the calculator says 48. I'll stay at 70 to decrease the rolling resistance on those cyclocross tires.

[froze]

Most doctor scales are not wrong, but assuming your right, did you add your clothed weight PLUS the bicycle's fully equipped weight in the calculator? I asked because the way you worded your post was as if you just entered your weight.