********, you faced John Lovett, and he is nothing like that speed. He is about 110-115kph when on song. And I don't think any 14 year olds can bowl 130km/h either.
Here is an example I printed off a few years ago, but you need another person, a stopwatch and a calculator:
Finally, we've got everything sorted out - how fast do you actually bowl? Naturally, the best thing possible would be to use a radar gun - however they're not genrally available to clubs an schools - but there is a simple way that needs just a stopwatch and a calculator (or a maths geek) to provide approximate results. Start the stopwatch when the ball is delivered, and then stop it when either the batsmen hits or misses it, then divide 45 (or 72) to get your answer in miles per hour (or kilometres). For example, a delivery timed at 1 second has travelled at 45 mph (72 kph). To break the magical 100 mph (160 kph) barrier, the clock must register at 0.45 seconds. Once you get used to working the timer, you will get surprisingly consistent results. I've found that standing behind the net, either directly behind or just to the side, provides the best results.