Gemfan Vortex 21x12E Electric Propeller (Glass Fiber Nylon) 6.35mm/0.25in Bore, 2PCS/Bag

Gemfan

$28.99 USD

Sale Sold out

Taxes included. Shipping calculated at checkout.

Options 1Bag 4Bags

Quantity

View full details

Overview

Gemfan Vortex 21x12E electric propeller made from glass fiber nylon, supplied as 2 pieces per bag. Size is 21-inch diameter with 12-inch pitch for electric power setups that require a 21x12E prop format.

Key Features

Glass fiber nylon construction
21x12E sizing (21 in diameter, 12 in pitch)
6.35 mm / 0.25 in center hole diameter
2PCS propellers per bag

Specifications

Model	21x12E
Propeller Diameter	21 inches
Pitch	12 inches
Hub Diameter	31.5 mm
Center Thickness	14.5 mm
Center Hole Diameter	6.35 mm / 0.25 inches
Weight (Single Propeller)	121.73 g
Product Weight (Including Packaging)	135 g

Static Test Data

Chart label: GemFan&Xoar 21x12, test motor 6360-190kv. Voltage: 37V.

Throttle (%)	10	20	30	40	50	60	70	80	90	100
Current (A)	1.37	2.65	4.65	8.31	14.32	23.52	36.13	49.89	66.71	72.16
Speed (rpm)	897	1713	2280	2834	3477	4116	4752	5264	5780	5936
Thrust (g)	202	769	1481	2326	3580	4998	6555	7988	9489	9995
Efficiency (g/W)	4.0	7.9	8.6	7.6	6.8	5.8	5.0	4.4	3.9	3.8

What's Included

2PCS Propellers/Bag

For compatibility questions (shaft/bore fitment, adapters, and electric power setup matching), contact support@rcdrone.top or visit https://rcdrone.top/.