GM 12x8 Folding prop blades

Product Code: GM12X8

(10 reviews)

Price: $33.79

Description

A pair of very high quality GM 12 x 8 folding prop blades, suitable for HyperFlight's and other makes of folding prop yokes and spinners. The photos show the similar GM 13 x 8 blades but this product has 12" (30.5 cm) diameter by 8" (20 cm) pitch blades.

These blades are thinner (they have a higher aspect ratio) than normal folding propeller blades, allowing larger diameter blades to be fitted without pulling too much current. This increases the propulsive efficiency of the powertrain. They are also engineered to fold closer to the fuselage, and cause less drag when folded than other props. See photos 3 and 4 for a visual comparison of GM, RF and Aeronaut props, kindly produced by Andre Jeber Demetrio.

Note this product consists of two carbon propeller blades only. The central spinner/yoke assembly is not included. Also it is common for prop blades to not fit all spinner/yokes perfectly as supplied. It is often necessary to reduce the width the blade root slightly to ensure free folding movement. Also the cut out in the spinner cone often needs to be increased to allow the blades to fully extend. The root of the blade should not touch the spinner cone when the prop is fully opened.

GM 12x8 Folding Propeller Blade Specifications
Prop diameter	30 cm	12 in
Prop pitch	20 cm	8 in
Weight of 2 blades	10.9 g	0.38 oz
Width of blade root	7.95 mm	0.313 in
Hinge pin hole dia	3.0 mm	0.118 in
Max power	2000 W

Reviews 10

11/05/2023 18:34

Review by: John Freeman

GM Prop and spinner

Ordered prop and spinner and parts arrived 2 days after ordering. Can’t fault the goods, excellent condition and delivery.

13/07/2022 11:16

Review by: Steve Moss

GM 12"x8" blades

Top class.

07/04/2022 18:48

Review by: Andy

Folding prop

these are good quality props. not had chance to use in anger. great service from Neil at Hyperflight.

06/04/2022 13:56

Review by: Reid R

GM Folding Props

Great product and Great Service. Neil really understands the nuances and needs of r/c soaring. I live in the U.S. at the foot of The Rocky Mountains . It’s FUN to always get exactly what I want in a timely manner, at a good price all the way from the home of my ancestors in England!

18/11/2021 02:01

Review by: Randy G

Great fit for my Vertigo.

12/01/2021 17:39

Review by: Roland

GM 12x8

The blades are light, stiff and the thin air foil matches very well for motors in the low to middle range of speed.
The blades align nicely along the fuse, after removing a bit of material. The removal is possible because the speed is only 8000rpm.

26/06/2020 12:54

Review by: Mick stiff

I have used these blades before. They are excellent 12 x8 on a hacker A10 7l with a 500mah 3cell only pulling 9 amps very impressive

06/04/2020 07:56

Review by: ferruccio

I have already tried these propellers in all sizes and for lightness and efficiency they are extraordinary

13/12/2019 16:19

Review by: GO

Great Propeller and GREAT Service

As Always Great Service and another great product.
Arrived in USA in 7 days. That's faster than in country postal service.

08/10/2019 18:12

Review by: Mark budd

GM 12 x 8

Very nice looks great on my Sprite

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Powertrains > Prop Blades

GM 12x8 Folding prop blades

Price: $33.79

Description

Reviews 10

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