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Viper Brushless VA20 Series Outrunner Motors utilize the latest design and manufacturing technology to create a powerful and lightweight motor.  Efficiency and torque is optimized by utilizing a 12 pole design with high quality curved neodymium magnets and high speed bearings.  The 12 stator, 14 magnet pole design also offers more power at lower current consumption than 9 pole outrunner motors and creates massive torque.  Viper Brushless Motors are manufactured using the latest CNC design and manufacturing technology to ensure the highest quality and best value.     

The Viper VA20 Series was developed for Indoor 3D, Outdoor 3D, Slowflyer and Parkflyer type aircraft from 5 to 22 oz. and 2 to 3 cell LiPo batteries.

·         12 stator, 14 magnet pole outrunner design for massive torque

·         Higher pole count means more power and less current draw

·         5 to 7 times more torque than a conventional inrunner motor

·         Rotating can means more cooling for longer flights

·         Quiet efficient running with no gearbox noise

·         More torque means you can swing a larger prop

·         Ideally suited for a wide range of airplanes

·         Front and back mounting options with included hardware

VA20 Series Outrunner Brushless Motors Datasheets

Type Kv[Rpm/V] Weight Operating range Peak Current Prop
A20-34S 1500 U/V 29g 2-3 LiPo 9 Amps 8x4 SF
A20-28M 1050 U/V 41g 3 LiPo 17 Amps 9x4.7 SF
A20-20L 1050 U/V 55g 3 LiPo 20 Amps 10x4.7 SF

 

Motor Prop # Cells Amps Thrust RPM
VA20-34S 8x3.8 SF 2 7.9 11.3 8470
VA20-34S 8x4.3 SF 2 9.8 14.0 7526
VA20-34S 8x3.8 SF 3 12.0 17.7 10608
VA20-34S 9x4.3 SF 3 12.7 18.5 8640
VA20-28M 9x4.7 SF 3 11.6 21.4 863
VA20-28M 10x4.7 SF 3 13.9 25.6 979
VA20-20L 9x4.7 SF 3 12.6 23.1 9136
VA20-20L 10x4.7 SF 3 15.6 28.7 8319
VA20-20L 11x4.7 SF 3 18.1 32.7 7433
VA20-20L 11x7 SF 3 20.6 32.6 5912

Above Figures Derived From Motocalc Data

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VA20-34S Outrunner Brushless

 

Weight: 29g, 1.02oz.

Diameter: 28mm

Length: 22mm

KV:1500

Shaft Size: 3.17mm

2 to 3 cell Lipo

Prop: 8x3.8 - 8x4 SF

 

Perfect motor for the Foamy Factory Mini Series airplanes and other small indoor 3D flyers such as Ikarus Shock Flyers, and 3D airplanes from 5-8oz. 

 

$39.95 + $4.00 shipping within USA.  Email first for International shipping rates

OUT OF STOCK

Solution Graphics

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VA20-28M Outrunner Brushless

 

Weight: 41g, 1.4oz.

Diameter: 28mm

Length: 28mm

KV:1050

Shaft Size: 3.17mm

3 cell LiPo

Prop: 9x4.7 SF

 

Perfect motor for 3D airplanes from 9-12oz. such as the Foamy Factory 32" 6mm Depron airplanes (from plans), the Great Planes "Flat Out" Series, Ultrafly Outrage and Furious, and other similar models.

$43.95 + $4.00 shipping within USA.  Email first for International shipping rates

OUT OF STOCK

Solution Graphics

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VA20-20L Outrunner Brushless

 

Weight: 55g, 1.9oz.

Diameter: 28mm

Length: 32mm

KV: 1050

Shaft Size:  3.17mm

3 cell LiPo

Prop: 10x4.7 SF

Perfect motor for 3D airplanes from 15-20oz. such as the Foamy Factory 40"-44" 6mm depron airplanes (from plans), Airfoilz Edge 540, Yak 54, Copperhead Aviation Stiffy Extra 300 and Yak 55, and other similar models.  The GWS Warbirds rock with this motor on 3 cells too.

$48.95 + $4.00 shipping within USA.  Email first for International shipping rates

OUT OF STOCK

Solution Graphics

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Accessories included with all VA20 Series motors

·         Extra 3.17mm Shaft

·         Firewall Mount Plate w/Screws

·         Firewall Mount Prop Adapter w/Screws

·         3.17mm Prop Adapter

·         3 Female Gold Plated Bullet ESC Connectors

·         2 Extra Grub Screws

·         Prop Saver

·         Extra "C" Clip

 

 

VA20 Series Outrunner Brushless Motors Datasheets

Type Kv[Rpm/V] Weight Operating range Peak Current Prop
A20-34S 1500 U/V 29g 2-3 LiPo 9 Amps 8x4 SF
A20-28M 1050 U/V 41g 3 LiPo 17 Amps 9x4.7 SF
A20-20L 1050 U/V 55g 3 LiPo 20 Amps 10x4.7 SF

 

Motor Prop # Cells Amps Thrust RPM
VA20-34S 8x3.8 SF 2 7.9 11.3 8470
VA20-34S 8x4.3 SF 2 9.8 14.0 7526
VA20-34S 8x3.8 SF 3 12.0 17.7 10608
VA20-34S 9x4.3 SF 3 12.7 18.5 8640
VA20-28M 9x4.7 SF 3 11.6 21.4 863
VA20-28M 10x4.7 SF 3 13.9 25.6 979
VA20-20L 9x4.7 SF 3 12.6 23.1 9136
VA20-20L 10x4.7 SF 3 15.6 28.7 8319
VA20-20L 11x4.7 SF 3 18.1 32.7 7433
VA20-20L 11x7 SF 3 20.6 32.6 5912

Above Figures Derived From Motocalc Data
 

 

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