cgallant wrote:

beek wrote:
5. who was the first rider to use upside down forks.

Cant recall rider, but the bike was the NR500. Had external springs leading the fork legs, as well leading calipers.

beek wrote:
6. what bike was the only gp bike to use carbon forks even to this day.

See above... Seems the carbon fiber forks had a good amount of flex to them making the bike hard to ride

If it was the NR500 it was debuted at the 1979 British gp by Mick Grant and Takazumi Katayama. But thats two riders!

Is no 2 three? Straight four, square four & v4?