As title says. Whats the weight difference between GRP and carbon?
Not a fair example, as FRP/GRP bonnets are usually chopped strand, or chopped strand mat, whereas CF is always weave. (Although perhaps what the OP wanted to know)For example:
Top Secret FRP Bonnet: 9kg
Top Secret Carbon Bonnet: 6kg
True but the cloth is still only a small percentage of the RRP of a Carbon Bonnet for example. Probably £50 worth of CF used in a £600 bonnet. Even if GF cloth was free, you wouldn't be able to sell GRP bonnets for £550, when you can get a carbon one for £50 more.cost of carbon weave is way above glass weave.
dry carbon is lighter than wet lay carbon due to the processes used (less resin)