A long winter has a way of making a lot of us northerners a little bit squirrly. In [Build N Pulsejets]’s case, squirly enough to mount a home-made propane-powered pulse-jet to a kids’ kick scooter ...

In this final part of the pulse jet series, an old woman's shopping bike is transformed into a bomb-inspired safety hazard. The pulse jet adds a bit of speed, but balancing the bike is challenging.