What most of you do not know (if any), is that Yamaha Motor Amsterdam was so convinced about the basic qualities of the TX750 that we commissioned Porsche A.G. Research in Weissach, Germany, to prepare and tune the TX750 for Endurance racing for the 1974 season.

We ran the 2 prepared machines only twice, in de French Bol d’Or 24 in Le Mans and during the Thruxton 500 miler in the U.K. One machine was piloted by G. Maison and J. Bertsch (I think they were both French Motorcycle Policemen) and the other machine by Peter Davies and Pete Lovell, both well-known long distance riders in the U.K. at that time. In the Bol d'Or both bikes failed during the night because of snapped cam-chains. Compression and valve lift from the race camshafts was too much..!

No, No, do not ask me! I really have not hidden this Porsche-Yamaha in my workshop. I believe both bikes were shredded.....!