How do I decipher the identification codes on a Sensenich propeller?
Here is the breakdown from the Sensenich website. You can also visit their site via the BAC Links page.
Special letter prefix to identify accessories or composition of propeller. Current letters include ‘S’ for STC package and ‘W’ for wooden propeller.
Basic diameter in inches
Designates Blade Design
Designates hub configuration…”M6″ for installation on SAE No.2 (Ref. AS 127) flanged shaft with 6/16 (3/8) dia. bolts. “M7″…for installation on SAE No. 2 (Ref. AS 127) flanged shaft with 7/16 dia. bolts.
Designates a 16/4 or 4 inch spacer (prop extension) thickness.
Designated cut-off in inches from basic diameter.
Pitch in inches at .75 radius station.
Designates design change