Steering column shaft length

[alga]

Sylvain, here's mine. http://imgur.com/a/w1QR3

I can put it on and off without unbolting the upper part of the column by sliding up the triangular shaft before connecting the splines at the rack.

My extension is ~54cm long, and the shaft inserts into it by ~6 cm at each side. So the total length of extension needed is ~42 cm.