Honda Fireblade titanium axles
This is a pair of titanium spindles I’ve made for a Honda Fireblade, they are a bit tasty! As with most of the superbike axles the rear is bored fatter through the shaft than it is through the threads, obviously. So this rear is bored 305mm all from one end, kept me happy for a couple of hours!
The shaft on the rear is 19.95mm over 313mm, but even at that diameter there was 10 thou (0.25mm) of deflection in the middle when coming to the finishing cuts.