the cross engine is 300cc water cooled two stroke and is modular ( bolt two together cross 8 ) this was powerd NOT run also up to 14,000 rpm ( have all the data why 14,000 as i see this figure for the 250 ? ) there was no ignition system at that time which could give the req spark ( Lucas where still working on what was to become there rita ) now there may well be a system but i have no idea who owns the paintant to this engine and i am unwilling to let it go , dav had told me Yamaha did look at one of the engines ( there are two ) as he needed finace but they wanted the rights etc so it ground to a halt . up untill his death he was casting parts for scott , vincent , emc , adller , excelciour , zundap , jap and many more that i dont know of , the last version of excaliber has hub center steering Mr millers is very early and only the wheel design was the same , finance again will ensure that this project never comes to anything unless over seas buys all rights .