The GM F5J Carbon 30mm/4mm Spinner
for 8 mm root folding propeller blades is suitable for all electric gliders requiring a 30 mm diameter spinner to fit 4 mm motor shafts. The spinner assembly consists of a very nicely molded carbon fibre spinner cone, a 7075 alloy CNC yoke (centre piece), a hardened steel front clamping screw, a conical split shaft mounting collet and two polished steel hinge pins for mounting the prop blades. The end of the hinge pins are threaded for securing them into the yoke. The spinner and prop assembly attach to the motor shaft using a conical split collet which is clamped to the shaft by tightening the front clamping screw.
Benefits of the GM F5J Carbon 30mm/4mm Spinner
- The accurately CNC machined 7075 aluminium yoke is generously proportioned, for maximum safety and power handling.
- The straight yoke design reduces the force on the root of the prop blades, and is safer for high power/high RPM setups.
- Supplied with a beautiful moulded carbon spinner cone.
- Split collet mounting reduced vibration and avoids the need for flats on the motor shaft.
See the last two photos to see how well the spinner works, especially when fitted with GM pro blades, and how closely the blades fold to the fuselage on this Infinity F5J model. Also please read this great customer review
to see how well people like these spinners in real life.To fit the folding propeller blades
unscrew the retaining/clamping bolt completely with a 3mm Allen key (not included). Remove the nosecone, easing it over the yoke, then unscrew the threaded hinge pins, and fit prop blades. If they don't hinge freely it is okay to remove a small amount of material from the blade root. Finally reassemble the spinner and secure the head of the bolt with Loctite Threadlocker Blue 242.To fit the prop/spinner assembly
to the gearbox output shaft (or to the motor shaft in direct drive installations) unscrew the retaining/clamping bolt a few turms with a 3mm Allen key (not included). This will loosen the collet and allow it to slide over the shaft. Then tighten the retaining/clamping bolt until the prop assembly is firmly attached. Up to 4.5 Nm of torque can be safely used when tightening the Allen key.
|GM F5J 30mm/4mm Spinner Specification|
|Distance across hinge pins
|Prop hinge pin diameter
|Prop blade root width