27-09-2023, 02:59 PM
I’d go for the roller bearing. The earlier ball bearing set up has produced some of the most worn bearings I’ve ever seen. You can, of course drill and tap the centre casing to take a locating peg like the D type axle. Or, if you were a philistine like me (which you aren’t) you might consider locating the outer race with a quick burst of tig welder. I will deny having said that.
Alan Fairless