M900 exhaust Flange

utopia · 19-01-2021, 10:39 PM

Looks like we're just about there then ?
I would just emphasise a few points :-
1) The effective thickness at the studs is 14.75mm. If you make them 16mm you lose 1.25mm of stud thread. Probably of little consequence but worth noting anyway.
2) The bore of the recess where the split rings fit is 54mm. Nasher's drg states 53mm which is a tad undersize (although it seems to have worked ok).
3) The easiest way to put the chamfers on (for 600 and 750 owners) would probably be by eye on a trial and error basis, using an angle grinder. Note that too big a chamfer could weaken the flanges.

19-01-2021, 10:39 PM	#10
utopia No turn left unstoned Join Date: Jun 2010 Location: leicester Bike: M750 Posts: 4,546	Looks like we're just about there then ? I would just emphasise a few points :- 1) The effective thickness at the studs is 14.75mm. If you make them 16mm you lose 1.25mm of stud thread. Probably of little consequence but worth noting anyway. 2) The bore of the recess where the split rings fit is 54mm. Nasher's drg states 53mm which is a tad undersize (although it seems to have worked ok). 3) The easiest way to put the chamfers on (for 600 and 750 owners) would probably be by eye on a trial and error basis, using an angle grinder. Note that too big a chamfer could weaken the flanges.