Ferrari F2005 - gearbox 20 April 2005
Innovative casing features two layers. Inner one is titanium casting, thinner but less stiff than last year's. New, outer carbon fibre layer adds lost stiffness, but has led to overheating issues, as carbon fibre is poor heat conductor. If gearbox temperatures go too high, lubricant and hydraulic fluid viscosity change, increasing stress on components. In Bahrain, Michael Schumacher retired after car refused to change gear properly due to hydraulic problems.