Titanium has a great strength to weight ratio. It,s got
good elasticity so when it bends it tends to return to its
original shape. It's corrosÍon.resistant so you don,t
need to paint it. But it's expensive
- frfteen times the price of steel!
The professÍonals use carbon
fibre. It's very light and it's very
strong. You can shape it any way
vou like. But carbon-fibre
frames are hand-made
so they're very
expensive.