1. What is the purpose of the square ridge in the bottom of the air-tube section, just upstream from the main jet/needle? Scott B's latest video discusses this and he correctly decides not to round this off as he does to the air piston. Why would that be a bad idea?
2. What is the purpose of the shallow groove in the bottom of the air piston, parallel to the airstream? This is the groove that you need to straddle with a straight edge for setting the needle shoulder position.
Bonus question. Who is the great engineer/scientist who's name should be associated with the answer to the above questions?
Later all!
Al
:-D
2. What is the purpose of the shallow groove in the bottom of the air piston, parallel to the airstream? This is the groove that you need to straddle with a straight edge for setting the needle shoulder position.
Bonus question. Who is the great engineer/scientist who's name should be associated with the answer to the above questions?
Later all!
Al
:-D