The more you ride a bicycle the more likely it is to get a flat tire. It is a good idea to carry the tools needed to fix a flat tire (tire levers, spare tube, multi-tool, etc). I do not carry a pump, instead carry a small CO2 nozzle and two CO2 cartridges in a seat bag. I carry two cartridges because of the situation where one was not enough and it took a long time for help to arrive.

This Instructable was made possible by the nice people at Instructables.com sending our makerspace some Sugru.  Thanks!

Step 1: CO2 Cartridges Are Sharp!

The threads on a CO2 cartridge are sharp!  They rub and cut on other stuff in the bag including the nozzle.  Look how chewed up my nozzle is from bouncing around in the bag! 

You do not want to compromise the spare tube or other tools in the seat bag.  That is where the Sugru comes in.

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