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Here’s a fun dumb one, which flips faster :
A. Wider board/ light trucks
B. Narrow board/ heavy trucks
We need a physicist for that one, I’d like to know the actual answer.
Physics teacher here:
The quantity we use to show how much resistance an object (like a truck) has to rotating is called the moment of inertia. The calculation for it involves the mass of the object and takes into account where that mass is distributed. Basically, it's the mass multiplied by some factor of length/distance. BUT... the length piece tends to be squared while the mass part doesn't, which makes length/weight distribution more important than weight.
The real answer is either. If you have a heavy, narrow truck, the heaviness makes it harder to flip, but the narrowness makes it easier. With a light, wide truck, the width makes it harder, but the light weight makes it easier. And with a wide board, you will also have better leverage in making it flip, since your foot is pushing further away from the axis of rotation.
Best flipper? Super magic carpet setup: wide board, narrow trucks with light hangers and heavy baseplates, small wheels. You want 360 flips? Shorten the wheelbase to move the mass of the trucks and wheels closer to the center. That's why people can tre flip on those little cruiser boards.