This WR24-7 belongs to a friend of mine Paul Davidson of terrafirmajets.co.uk . Unfortunately the built in ECU seems to have a faulty proportional valve and thus doesn’t operate. To overcome this an automotive fuel pump was installed bypassing the ECU and the flow is controlled with a PWM speed controller. Should a replacement ECU become available at a decent price, then it will be converted back to it’s original configuration.

Paul made a rare trip back to the UK and whilst he was here he took the opportunity to run his WR24-7.

Paul starting the Williams, starting air pressure was getting low hence the few seconds of flame during start up.