Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board A65 Timing Side Reamer

I think rigidity is everything

The pilot I am using covers a good part of the shank

Honed to approx .0005" working clearance

The shell reamer arbor has a tapered end and key, with only removing approx .002-.003" off the ID I don't see any reason of how my set-up would follow an existing hole

If you look at the original Triumph 350 / 500 arbor, you will see they locate off the ball bearing from the opposite side of the case (timing side through the drive side)

Now talk about lateral movement...

My cutting reamer is a specific size, then I have the crank from standard ground down -.001" from the I.D. of the bushing once done

Talking about 350 / 500 motors BTW