Hi guys,anyone built or know of anyone who has built/building a "mighty mouse" pre 60/65 rigid trials bike using the little villiers 125,150,197 cc motors,in james,francis- barnett, excelsior etc configuration, Mick andrews did a test on rigid james and bantam specials in classic dirtbike(issue seven 2008)that really got me in,very small, light,simplistic machines that would be a ton of fun in the right conditions ,mainly after information on the villiers motors/excelsior rigid frame as thats my base any info much appreciated cheers