This bike was built by a mate of mine who kindly gifted it to me when he emigrated to Australia. It's a real "bitsa", an A10 engine in a B31 frame with the forks, hub and disc brake of a Japanese 500. The engine is a runner but seems to have some oil circulation problems. There is a "suicide tap" in the oil feed and I decided not to run it again until I'd had time for a full rebuild. (Still waiting for that to happen)