After searching on the Tinter for a fair few hours I finally found the picture that drove me to build my Dirtbike to look like it does.
I know it's not anyway near 100% the same but it does look similar and at least it's not covered in Tin-Foil. Haha
Think the pic is of John-Paul Rodgers and I first saw it in GO Magazine back around '91.
My Dirtbike
