I see everyone is talking about using aluminum for their chassis. I'm thinking about using Carbon Fiber filament to print mine. Would that be weaker than aluminum?
Also, since no one talked about this yet, would a 3 wheel vehicle design have an advantage since there will be less friction?
I was planning on doing the exact same thing, though I'll be ordering carbon fiber rods online instead of 3d printing them (can't say I wouldn't be jealous if you actually have access to a 3d printer that can use CF
). Obviously the size of the rod/stick used will make a difference in the strength, but aluminum still has the edge when it comes down to durability and strength.
In my opinion, yes, 3 wheels are optimal for this year. If you have done pinewood derby before, it's the same thing as slightly lifting one wheel up so the car rolls down on 3 wheels instead of 4. However, the reason to use 3 wheels is not reduced friction, since the weight on each wheel just increases (therefore about the same amount of friction). The real reason is rotational inertia, meaning that 3 wheels are better than 4 wheels in the sense that you need to get one less wheel spinning. Please forgive me if I messed up my physics.
Boomilever, Machines, Wright Stuff, and hopefully Gravity Vehicle
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