Cut close to the shaft but parallel. Into the face of the flange. Then cut the remains of the flange face off on the outward facing part of the flange, away from the shaft. Gives you room to cut into the body of the flange and still leave a bit of it to avoid the shaft. Once you've piecemealed the fitting, a 2lb hammer and cold chisel will split the remains from the shaft.I'm not convinced we (Lucas or people on this forum) understand the joint.
What takes the fwd thrust?
Lucas says its not a taper.
So it must be parallel.
Interference fit? I've never seen one, how would the boat buikder have assembled it?
Grub screws? Do they penetrate into the shaft?
The key to getting the [Inappropriate quoted content removed] off is understanding the joint and how it was put together.
Or Lucas needs big boy pants and go banjax with the grinder. Shame to wreck the shaft.
Even if the shaft does get damaged, worst case, take it out, have cuts welded and machined back to original spec.
It's brutal, but there comes a time to get the job moving.
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