I was thinking about it, and I think belt drive might be better in that it may be easier to do and more inline with rc; so thanks for that
Good choice. There are some advantages for belt drive but I forgot them.
Maybe someone else can tell, otherwise I must check some of my files at the weekend.
I think a double wishbone suspension is good for you.
Another thing, how can I know if the monocoque is stiff enough?
hahahah there you go....
Thats a very good point for using a metal frame. It's easier to calculate.
You can either do a FEM simulation or If you don't have the software or know how to use it you can even make some calculations by hand.
Yea even in the world of FEM own calculations are still good and gives you a much better idea about what you are actually doing.
A composite chassis is not so easy to calculate.
Anisotropic material properties, different layers, core and so on....
Honestly I don't know myself how to get a good calculation for it.
By the way a carbon chassis is not always lighter than a tube frame.
You can see formula student teams that get a heavier car when switching form steel to carbon.
Regarding demanded stiffness:
Your front axle should only twist a defined percentage to your rear one.
Also your chassis should not flex very much under bending and should not start to oscilate
How much flexibility you want to allow is hard to say.
Maybe you should simply test it out.
Build something like a dummy chassis and try to twist and bend it.
Possible the most straight forward way for it.
