... it gathers water as the moving stream turns the wheel. As the wheel turns with the spiral attached to it, the spiral gathers waterduring the first half of the rotation, then air during the second ... leaks.21. Then, to begin putting your inner tube back onto the rim, line up the valve with the hole in the rim andpush it through (Figure 2-19).50 Green Projects for the Evil Genius 22. Place the ... free of the rim.9. Reach into the tire and feel the inner tube, find the valve (see Figure 2-10) and gently pull it out of the hole in the rim. Then you can remove the tube frominside the tire...