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Interesting... this must be what the nitrile rubber sheet post is about as well!
What if you used a nose bearing O-ring, which will stretch over the nose bearing just fine, and cut a 45 deg chamfer in the aluminum collar so the O-ring is pressed both against the case and against the nose bearing? Use the pulley bolt to apply pressure, and then tighten the set screws.
Even more secure would be a one piece clamping collar with an M-4 or M-5 bolt to clamp it in place on the bearing. You'd need a mill & lathe to make one of those...
All of this assumes the #8 is tightly clamped by the case. The only mechanical stop keeping it from sliding out is the little pin in the RH case half.
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'88 Coupe Lagoon Green
"D'ouh!" "Marge - it takes two to lie. One to lie, and one to listen"
"We must not allow a Mineshaft Gap!"
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