Google announced the mouthful known as “Android 4.0 Ice Cream Sandwich” today. The first bullet point of their presentation was a new system-wide font, Roboto. John Gruber quickly pointed out what had caught my eye as well: Roboto sure looks a lot like Helvetica, the typeface so famous they
This instruction will guide you through the steps of repairing a punctured bicycle tube. Before you start make sure that you have all the tools and materials listed below available.
• 3 tire levers
• A bucket
• A sheet of sandpaper
• A bicycle pump
• A repair patch
• Vulcanizing solution
• Water (for locating the puncture)
Removing the tube
2. Place the flat end of one of the tire levers between the rim and the tire.
3. Pry the tire over the rim edge by pulling the lever downward. Hook the free end of the lever to a spoke.
4. Repeat steps 1 and 2 with the 2 remaining tire levers. Place the levers 2 spoke holes apart.
5. Slide your finger between tire and rim to free the tire all around on one side.
6. Unscrew the air valve and the nut at the base of the valve holder.
7. Push in the valve holder through the hole in the rim.
8. Pull out the tube.
Locating the puncture
9. Fill the bucket with water.
10. Screw the valve back on to the valve holder.
11. Inflate the tube with the pump.
12. Run the tube through the water in the bucket. Where you see bubbles there is a puncture. Mark off the puncture and then continue to check the rest of the tube – there can be more than one puncture.
Patching the puncture
13. Deflate the tube.
14. Roughen up an area with the same size as the repair patch with the sandpaper. The puncture should be in the center of the roughed up area.
15. Wipe off all the dust.
16. Apply a thin layer of vulcanizing solution and let it dry for a couple of minutes.
17. Remove the protective plastic from the repair patch.
18. Apply the repair patch to the puncture and press firmly.
19. Inflate the tube with the pump.
20. Check if the repair is air tight by submerging the repaired area in the water.
Replacing the tube
21. Unscrew the valve from the valve holder.
22. Insert the valve holder in its hole in the rim.
23. Insert the tube into the tire.
24. Slip the the loose side of the tire over the edge of the rim by hand. If you cannot get the whole tire on by hand you can use the tire levers to pry it on.
25. Position the valve holder upright. Screw back the nut and valve to the valve holder.
26. Inflate the tube.
Tipstack till @peterfernold.