Andrew McSwain from Mildura rode one of these back in the day, copped a fair bit of lighthearted flak for riding an "old" aircooled bike when all the other 250's were w/cooled, but he made everyone look stupid when he took to the track. Super smooth, relaxed riding style that made him look like he was never in a hurry, but his lap times always fast and consistent, and a nice bloke to boot. On a side note his little brother David was just as good and ended up being no.1 in vic for a fairwhile in the late 80's-early90's.