Broke the third crank mechanism! The dome is just too heavy! I wore out two round holes for a crank handle into oblong holes in just a few complete rotations. Two 1/2 inch holes through mild steel rhs turned into 1/2 inch by 1 inch oblongs.
So now i have built a SUPER CRANK MECHANISM out of two 25mm roller bearings side by side. I'll be getting Ron to put it on the site for me, on the support ring page.
http://www.aussiepeople.com.au/asign...pportring.aspx
Until then, heres a couple of pics.
Baz.
