12-07-2019, 10:29 PM
I'll add to the comments about over-engineered design. GE and Colin Chapman were both great believers in adding lightness wherever possible and it is a common error to conflate thickness with strength.
If you're planning punishment for the finished car flexibility can be an advantage over rigidity and a flexible construction is less likely to be damaged.
I'd also stick to birch ply which is surprisingly strong in thin sheets. Thick birch ply is usually heavier than the ghastly far eastern rubbish and is much better quality manufacture. You are unlikely to find overlapped laminations and "through voids" with birch ply. This will allow for thinner material to be used.
If you're planning punishment for the finished car flexibility can be an advantage over rigidity and a flexible construction is less likely to be damaged.
I'd also stick to birch ply which is surprisingly strong in thin sheets. Thick birch ply is usually heavier than the ghastly far eastern rubbish and is much better quality manufacture. You are unlikely to find overlapped laminations and "through voids" with birch ply. This will allow for thinner material to be used.