Cool, thanks for the lesson in tyre theory.
What I did mean is that as far as I can see these things would be TOO stiff. Am I correct in saying this?
What are your thoughts on these????
OK...my concerns of this type of construction in a racing style wheel/tyre combination is not based on wether or not they can get the thing to flex or grip, but in the bonding of the rubberised components to the metal components. I'll give you an example:
My specialty is giant off the road tyres for mining trucks. Like the passenger car market, this sector has gone from bias ply tyres to radial construction. One of the factors that confronts tyres of 4 mtrs diameter and with a load carrying capability of 50 - 80 tonnes per tyre is delamination or heat separation. This can happen in both bias and radial tyres but it happens differently. The ideal is that the tyre heats up to 100 deg C and stays there but if it goes to 115 deg C and above, the rubber reverts and moves away from the steel or cord belts that it has ben bonded to. The steel belts in a radial tyre will also hold some of this heat and this keeps the rubber away from it until it cools in a different location and now you have the beginnings of heat separation. With an old style bias tyre, the bonding or vulcanisation is more efficient and the rubber does not move away from the bias belts as they tend to not hold more heat than the rubber surrounding them. If the bias tyre can be cooled quickly enough and stood down for a period, the heat separation may not occur to a failure situation.
So my point is that the closer chemically a material is to rubber, the less it likes to share it's space with metals. Metals are effected by ambient temps and extreme temps generated by, for arguments sake, drive components way too much for the rubber to be wanting to stay bonded to it. So the answer is to make the wheel component and the tyre component out of the same or very similar materials so you dont get rejection. This, if I remember correctly, was the benefit of the Michelin Tweel. The Tweels were made from a plasticised material of some sort??
Pheeeew! I love it when I talk like that!