The way i look at it is the lighter the car the better, then i can add weight were i want it not were the manufacture puts it so he can make the kit cheaper.
If you look at F1 cars they are all built under weight, and they move lead ballast around on the car to improve the handling, the same as what we are doing.
Weight low in the chassis is always better than weight high up.
The Slim4 prototype is carbon and titanium (and turning into a labour of love lol ) but i will make it as light as possible then hopefully bring it upto weight with lead, this is why there is no top deck but a extra thick chassis, again all this weight is down low.
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Jonathan | Atomic-Carbon
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