The triangular blanchards under base nuts serve a good purpose, as they distribute fastener stress that contributes to distortion. I have found when torque-plating large over-bored cylinders that they can reduce the installed flex at the spigot by more than a thou", compared to regular lockwashers.
When the Factory introduced them (on 80" Chubbles I believe), they were accompanied with a shorter nut with a larger flanged washing surface.
PS: My "Handy Hannah" has a sliding shutter to control the amount of air coming in the side relative to what goes out the snoot. She's not quite as streamlined as Mudbone's.....nor as fresh of plating...., but definitely a sidevalve model as well!
Last edited by Cotten
on Wed Jan 03, 2007 7:33 pm, edited 1 time in total.