Several of these spoked wheelsets were manufactured from solid wheels and were delivered to the RTC where they were strain-gauged by the author and colleagues. A special rig was set up within the R&DD main Test Hall workshop where this work was undertaken and where the wheelsets were calibrated. This was separated from the shop by sackcloth covered wooden screens and was hence known as the 'Hessian Hut'.

One test series which I was involved with were the curving tests undertaken with HSFV1 using two of the wheelsets on the four wheel wagon.

Later in the project a special vehicle was built for the purpose of detailed investigation into lateral track forces, curving and rail corrugations. This vehicle was a converted Freightliner flat which was fitted with a retractable LMW between the existing bogies. Later known as Lab 25, it now had ten wheels and consequently was christened 'Decapod'.

Onto the centre of the vehicle was built the accommodation for the crew and instrumentation and the outer ends were left open and used for loading purposes - note on the photos the rail packs which were also used on HSFV1.

Although the author was involved with a number of tests with the vehicle, I left the Project before it was completed.