Posted by David Clark 1 on 20/02/2012 15:23:40:
Hi Kerbtrawler.
That is what I thought, small hole.
Bore a square block out to fit on the bar, drill and tap and use a grub screw to nip the block to the shaft.
Put the bar in the vice, squaring up with a square.
Drill undersize halfway through, turn the bar and block over, drill through from the other side.
Drill through the collar, from both sides if neccesary.
Assemble both parts and open up to finished size.
regards David
Taking Davids idea a little further I have now made several square bars to hold the various pins for the front end assembly – it makes drilling the 1/16" holes for the split pins so easy and all 5 have come out straight and parrallel