Registered Forum User
Big Twin
Bikes: Ducati 749, Phil Read Replica, DD 620
Posts: 1,830
Join Date: Mar 2008
Location: Coventry
Mood: 2011 DD Class 'B' Champion
I bored a Ø20 hole through both box sections, on the ally and the steel one.
Then welded in a length of bar which was pre drilled and tapped M8x1.25, 50% through.
This then accepts the general ebay bobbins.