Let's begin with the parts showed in the second picture of my first message that opens this thread.
Keeping the same dimensions, what material would you suggest?
It's the E-Revo Bushless #5608 that is already the most expensive RTR (not modified) electric RC car available on the market (650 euro), but I can spend other 1000 euro for parts.
The problem is that I'm not finding much better parts than stock on the market.
I only found some titanium parts...
I like to play and abuse RC car models like this:
However, when making big jumps or high-speed crashes (they can even reach 90mph), even steel parts gets damaged and needs to be substituted. See these damaged/broken parts for example:
http://img169.imageshack.us/img169/4286/cimg1700.jpg...