You may have to undo your first few tries to get a tighter knot before it becomes air tight. The ”repaired” tube will now have a much smaller diameter, making it a bit trickier to install than when you first put it in. Pump some air into the tube once you’ve finished tying your knot, and check if any air is leaking at the new joint. Keep enough slack to easily tie the two ends together in a tight knot, but don’t use too much of the tube length as it will make reinstalling the now too-small tube back on the wheel more difficult. Step 3: Tie the two ends together in a very tight knot. Go carefully – the straighter the cut, the more likely it will hold air. If your bike uses a single ring and guide, lift the chain up and off of the ring. Alternatively, you’ll need to use the teeth on your chain ring to do the job. If you carry a folding knife or Leatherman you can use it to cut the tube across its diameter exactly where the puncture is located. Step 2: Cut The Tube it in half at the puncture. It’s time to perform a bit of surgery once you’ve found it. Using your pump to inflate the tube sightly will make finding the puncture much easier. Remove tire and flat tube. Figure out exactly what caused the flat in the first place as this fix can only be used once per tube. Remove all the leaves or grass before putting in a new tube. Ride directly and slowly home to avoid damaging your rim. Put the tire back onto the rim and replace the wheel. Tip – Make sure to fill the tire completely and evenly with the leaves or grass. If there are no leaves available, fill the tire with grass, molding the grass to the outer part of the tire and working inward. Step 4: Fill with leavesįill the tire with as many leaves as possible if you don’t have a strap. Wrap the strap from your sunglasses around the hole in the tube like a tourniquet, tying several knots around and next to the hole to create an airtight seal. Take out the deflated tube and determine the location of the hole. Tip – It’s possible to fix a flat without removing the wheel, but much more difficult. Then use your hands or a bike handle to separate one side of the tire from the rim. Turn your bike upside down and remove the wheel.
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