This is the 55mm Folding Propeller Hub for a 45mm Spinner from
Advanced Precision Composites.
For use on Electric powered aircraft only (not for gas engines).
FEATURES: Two-piece, gray composite propeller hub that goes on each side of
the folding propeller blades to hold them in place (blades are not
included, see REQUIRES)
Hub has molded nut insets for easy tightening
Comes in a bag attached to a header card
INCLUDES: One composite propeller hub
Two 3x10mm cap head screws
Two 3mm nuts
Two 3mm washers
REQUIRES: Propeller blade sets (use APCQ4305 through APCQ4360)
2.5mm hex wrench (GPMR8012) to tighten cap head screws
Hand and eye protection when operating propeller
SPECS: Overall Length: 63mm
Length between blade mounting centers: 50mm
Inner mounting diameter: 8mm
COMMENTS: See propeller blades for assembly instructions.
Sailplanes have no landing gear, and therefore would break a rigid
propeller when the plane came in for a landing. The folding
propeller folds back upon landing.
The use of this hub will shorten the overall diameter of the prop
by 10mm from the manufacturer's length listing.