Re: Knicker elastic subframes
It isn't fibreboard but, IIRC, Tufnol. Tufnol is formaldehyde urea impregnated cloth. Tufnol correctly specified and designed actually makes pretty good low power gears for things such as contact breakers. It's the correctly specified and designed bit that tends to fall down. Doesn't it, Velocette? Fortunately I was only doing 85 when the thing decided to turn to shreds, and Velocettes actually had an oil filter.
The Japanese thought they would do better and sometimes used nylon for the oil pump gear on two strokes. After seeing what the failure of one of these could do to a 750 Kawa I got a bit obsessive about checking mine regularly.
Biting the hand that feeds IT
