How about a load cell under the motor or even under the whole rig? I guess you will be interested in not only whether the motor fires, but also whether maximum thrust is achieved quickly or if the fuel pellets have to warm up first. Graphing downforce against time might well give interesting data.
- Geek's Guide to Britain BT Tower is just a relic? Wrong: It relays 18,000hrs of telly daily
- Product Round-up Smartwatch face off: Pebble, MetaWatch and new hi-tech timepieces
- Geek's Guide to Britain The bunker at the end of the world - in Essex
- Review: Sony Xperia SP
- Dell's PC-on-a-stick landing in July: report