Why don other feathering propeller manufacturers use stainless steel?
The tooling cost to set up for investment casting is much more expensive than for casting in bronze. Other manufacturers have a large range, which would be prohibitively expensive to tool up for in stainless steel. We only make one hub size for 15″ up to 20″ diameter, so we have a low tooling cost per propeller. And we have now reached economies of scale that offsets the high tooling cost. We also like to think we are more innovative, after all, would you buy a bronze shackle or a bronze propeller shaft in preference to stainless steel? BASIC OPERATION The basic principles behind all of these more common self-feathering propellers props are similar… The propeller shaft is permitted to rotate between stops within the propeller hub, this rotation is transferred via a drive gear to a gear on each propeller blade. If the propeller shaft is driven forward the propeller blades are orientated to present the leading edge to the forward drive position. Conversely when the propeller shaft is dri
