[tommays]

I have never seen a plastic bore adapter land or sea that went above toy size that worked

Your original prop is the very best short term solution and as lon as the tack is watched will not cause harm



This is a 1" flex-o-fold hub with 12 x 7 blades (16 HP) so 63 would be be a freaking big jump

The blades are able to be swapped in minutes it just a question of what they think

 

[tommays]

I designed a set of tools that allows me to address it in various ways





The mixers i repair are to big to go in machine tools so you have to bring the tool to them