From Oregonlive comes this article on oregonian Robert Maddox, the worlds top pulse jet engine builder/designer. The engine is currently selling on ebay for a cool $1200 (+ $95 for shipping/handling), however if you really want to splurge you can throw down $8500 for a fully assembled jet bike from Bob. The engine pumps out 100lbs of thrust and there is a ‘warning’ on the ebay post that states ‘jet engines are dangerous, buy at your own risk, and that the engine runs at 140 decibles’…so you may want to think twice before firing it up in the suburbs. Bob has been working on pulse jet engines for about 10yrs, and now his handiwork brings the possibility of becoming the Rocketeer to your fingertips (if you can afford it). Here’s a video which shows the bike in action, but averaging 1.5 gallons of fuel per mile this is probably not the best way to commute to the office. If you commute by bicycle regularly, riding on this thing will probably put you there in record time.
When wide open, it will top out at around 75mph so before you hop on you may want to up the payout on your life insurance policy.