Brian,
as a start you might find some stuff on Graham Walker
at
http://www.nationalmotormuseum.org.uk/do...act%20Sheet.pdf

This also worth a look:

http://www.inter-bike.co.uk/reviews-moto...-marketing.html

My own personal modern day favourite is Guy Martin- not least because although a great rider, he's a bit of a throwback to a different era ( as I suppose were the Dunlop brothers in some ways)
Have alook at:

http://www.powerslide.net/forum/index.php?showtopic=9424


Cheers,
G

GLLHG