again excellent work Phil,
i appreciate you frame was weakened and you have rebuilt it, as you do i've bbenn throwing ideas about inside my skul (plenty of room lol!) would it be better and if possible to mount the disk nearer to the off side wheel? that way stress would be less on any bracket taken from the frame 'fork'.
i'm not sure what the OD is for the axle, last week i had to cut out some masonry to fit a door entry front panel, i was using a 4" diamond metal disk in an angle grinder.
the hought i had was the metal disk could be used to mount the brake disk rotor to, or perhaps even use it as the disk itself, the Colette of the angle grinder would make an ideal 'boss' as it already fits the cutting disk perfectly just may need boring out, some spot welds and job done.
just some ideas, too cold to go out and play and i seem to have developed flue. have now been banned from my shed
but excused to down 'meditional' brandy
)
regs
alan