popsracer

Nightbreed;

I've used the Graphite spray at work before. It is normally used as an Anti-Seize coating and is very slippery. There are a couple different companies that sell it.

Titanium is lighter, but not as strong as Hardened Steel, probably closer to a high grade of Aluminum. Axles are subjected to very high loads and subject to damage from hits. TI and AL axles would bend very easily in a T/C (IMHO). In a Pan car the weight is much less, so the whole chassis moves very easily when hit.

schumacher;

I understand EXACTLY what you are saying. You can see it happen on machinery with full size belts. It is most noticeable during acceleration under a load.