Carbon Fiber weight reductions, is it worth it? Options

[dutchboy]

How much do each of the OEM style CF hood and hatch from Seibon / Vis shave from the weight of the car?

Are hood pins required for the hoods(has OEM style hood latch).

Be sure not to count the glass in weight measurements.


Just wondering if it is worth the cost of the parts.

Thanks!

[Special_Edy]

First Id like to say that for every vehicle I have owned I could feel the difference between having a passenger and not. You can feel the loss of acceleration, the suspension over bumps and the way the vehicle rolled around turns. On my motorcycle and 6gc I can even feel a full fuel tank vs an empty tank. The slower the car the greater the performance gain from reduced weight.


Another idea Id like to add to this thread is that the most effective places to reduce weight are on
(a) rotating parts such as the crankshaft, flywheel and tire/wheels. These parts store a lot of inertia so lightening them will reduce significantly reduce the speed at which the engine/drivetrain accelerate and decelerate. Pound for pound the most effective area to reduce weight.
(b) the unsprung weight on the suspension such as control arms, brakes and tire/wheel. The less the moving components of the suspension weigh the less inertia they have. Reduced inertia means that the suspension will react faster to the road surface which reduces wheel hop and the amount of vibrations/bumps that are felt within the cabin of the vehicle.
© the parts which are on the extreme height of the vehicle such as bumpers, batterys, sunroofs, hoods, trunks and so on. The higher in elevation a part is from the roll center of the vehicle(meaning the higher off the ground it is) the more it will cause the body of the vehicle to roll around turns which reduces traction. You are effectively lowering the center of gravity(just like when you drop it) towards the surface of the road.
(d) the parts at the outer extremes from the vehicles center of inertia such as the battery, bumpers, fenders, hood, hatch, engine and so on. Just like the weight of the rotating mass in the engine effects its ability to rev up quickly, so do the heavy components at the extreme front, rear, and sides effect the vehicles moment of inertia. The vehicle will turn easier and more quickly with a reduced moment of inertia which is why mid-engined cars handle so much better than their front engined counterparts. The best example I can give is whether it is easier to swing a heavy bat or hammer vs your empty hand.


Anyways, the point is that certain areas of the car magnify the effects of heavy components. Parts that spin effect acceleration and deceleration performance. Parts farther away from the center of the vehicle effect the handling of the car by effecting the angular acceleration of the vehicle around its center of gravity, which includes roll, yaw and pitch.