Notice the thread also talking about Alron (Al & Ron Lyons). I believe my father Brian Mitcheson ,was the first guy to ride for Alrons (in fact you could probably call him their STIG, lol!!). He formed the Trail and Enduro Club over here in the west, he was great friends with them when they were first trying to develope the bike. I remember he rode an Ossa powered version, but I also believed they tried several different motors. he loved it. I believed they did jig up their own frames, . But I'll be able to clarify that when he gets back from the UK, next week