I like going up a couple sizes (usually 1/4” or so) then sleeveing down the end by brazing in successively smaller tubing sizes. Then I fill it with lithium grease.
Normally the top of the rudder post is well above sea level and does not require packing like the shaft tubes. and there is very little friction between to successive sises of brass rod. So I just go with the next size of tubing.
To be honest IDK. The Doria still needs a few things and I still need to assemble the Duca kit currently at teds for my secondary ship not nessary of course. I really lost some drive building and not actually battling. Houston still does not have a organized group. Ted constantly trying to change that. I look forward bomber Feild In January to do some practice runs hopefully iron out some bugs in the Doria. Then I will see about the brouhaha
Very true. I also like the rigidity of a larger diameter tube as it relates to accidental drops, adhering to the hull (fiberglass hulls that is), and gear mesh for geared rudder setups.