Quote Originally Posted by RogerH View Post
Dave, I think with this discussion there is a difference between the historic single seater/sports car regulations under Schedule K (which are essentially "as it was, so it shall be") and the T&C regulations under Schedule K which are more relaxed (essentially, if your car represents say, 1972, then if you can prove that your modification could be 1972 period then they are OK - I think they are referred to on the T&C regulations as "Period Variations". I'm talking about the former more restrictive category and I think you are talking about the more relaxed T&C regulations.
Roger, that's exactly the point I was making, and having just put the rule book down there is no mention of period variations, neither does it come [T&C that is] under Schedule K. It is a stand alone set of regulations. If you were to rely on Schedule K saloon cars I doubt that anyone could make up a grid of vehicles of any age. What I am against is using any technology or materials that were not available at the time.Eg carbon fiber or electronic injection. Some on here object to 6 pot calipers well the first Dunlop disc brakes had 6 pistons and 6 little brake pads on each one, so on needs to be careful when assuming something is new technology.