As the chassis was getting close to needing a proving run before proceeding further, a seat of some sort was needed. A sheet of 3/16" alloy was marked and cut using a length of channel as a guide for the saw. Holes were drilled and a piece cut out to clear the gearbox.
The test runs were made with bits of wood for footrests. Various positions were tried but it was difficult to sit in comfort. Sitting as far back as possible, the best option, resulted in the front wheels lifting. A roll of lead tied under the chassis cured this. I also tried kneeling on the platform, one hand on the engine to steady myself, and the other operating the steering tiller and throttle. All very awkward especially while bouncing over the rough ground.
The runs were successful with just enough engine speed for the centrifugal clutch to engage and in first and then second gear. As camera man Mr Sutton wasn't available at the time, no video made. This was rectified on later test runs. I then set the steering and throttle and watched it run around in circles. Easier than trying to stop myself being thrown off.