Competing at the 1922 Scottish 6 Days Trial, these odd little three wheelers were produced and entered by a Mr. R.O. Harper of Manchester. Powered by a 269 cc Villiers engine, neither of them finished. However, the next year R.O. Harper completed the course and won a silver medal. A run of 250 had been contracted to be built by A V Roe Aircraft. They were not commercially viable and the order was not repeated.