Tenshock VIPER 1020-12T 4pole 5200KV with Micro Edition 5:1NL

The Tenshock Viper/Reisenauer combo is the ideal choice for F5J models that are less than 1400 grams ready to fly. Perfect for early morning and calm rounds.  Also of great use in lighter wind convective conditions where low starts and a maximum climb rate in thermals is important. At only 77g this motor and gearbox combination provides a lighter, more powerful, and considerably better value for money solution than the Powerline Micro 1015/F5j drive system.

Suitable in the smallest of fuselages.

Data:
Weight 77g
Diameter 22mm- Shaft Diameter 6mm
Length without shaft 59mm
1085 rpm/V 
4 poles
Hole circle 14mm, 3xM2,5
For 2-3 lipos
Current max 50 amp.
max. power on 2s 300 watts
max. power on 3s 500 watts 
Timing 6-10°
8khz

Flight Comp Testing-

From Testing:

Best ETA on 7,4 V, 17 amp., 83,1%
Best ETA on 11,1 V, 23 amp., 84,4%
Ideal operating range 15-40 amp.

Switch-on times:
tipical for gliders,
under consideration of outside temperature
and effective cooling.

Drive data in stand:

2s - 7,4V - 9x21,5 GM F5D CFK M35, 6459 rpm, 35 Amp. 256 Watt, VPitch 212 km/h, Eta 77%
2s - 7,4V - 10x8 RF CFK M24, 7183 rpm, 19 Amp. 144 Watt, Schub 883g, VPitch 88 km/h, Eta 82,7%
2s - 7,4V - 10x8 RF CFK M39, rpm, 23 Amp. 170 Watt, Schub 892g, VPitch 85 km/h, Eta 81,7%
2s - 7,4V - 12,5x6 Ae, 6881 rpm, 26 Amp. 190 Watt, Schub 1278, VPitch 63 km/h, Eta 80,8%
2s - 7,4V - 13x6,5 Ae, 6841 rpm, 26 Amp. 196 Watt, Schub 1729g, VPitch 68 km/h, Eta 80,5%
2s - 7,4V - 13x8 GM CFK M25, 6633 rpm, 31 Amp. 229 Watt, VPitch 81 km/h, Eta 78,7%
2s - 7,4V - 13x9 RF CFK M28, 6711 rpm, 29 Amp. 217 Watt, Schub 1391g, VPitch 92 km/h, Eta 79,4%
2s - 7,4V - 14x7 GM, 6620 rpm, 31 Amp. 231 Watt, Schub 1531g, VPitch 71 km/h, Eta 78,5%
2s - 7,4V - 15x8 GM F5J CFK M25, 6195 rpm, 40 Amp. 298 Watt, VPitch 76 km/h, Eta 74,3%-30 Sek.
2s - 7,4V - 16x8 GM F5J CFK M25, 6064 rpm, 43 Amp. 320 Watt, VPitch 74 km/h, Eta 72,9%-30 Sek.

3s - 10V - 12x6 RF CFK M32, 9147 rpm, 38 Amp. 379 Watt, Schub 2220g, VPitch 84 km/h, Eta 80,3%
3s - 10V - 12x8 RFschmal CFK M25, 9082 rpm, 39 Amp. 393 Watt, VPitch 111 km/h, Eta 80%
3s - 10V - 13x5 Ae M37, 9277 rpm, 35 Amp. 351 Watt, Schub 2283g, VPitch 71 km/h, Eta 81,2%

3s - 11,1V - 10x6 Ae, 10848 rpm, 27 Amp. 303 Watt, Schub 1517g, VPitch 99 km/h, Eta 83,9%
3s - 11,1V - 10x8 Ae M38, 10201 rpm, 41 Amp. 456 Watt, Schub 1553g, VPitch 124 km/h, Eta 80,8%
3s - 11,1V - 10x8 RF CFK M24, 10294 rpm, 39 Amp. 434 Watt, Schub 1845g, VPitch 126 km/h, Eta 81,3%-
3s - 11,1V - 12x6 RF CFK M32, 10008 rpm, 45 Amp. 501 Watt, Schub 2657g, VPitch 92 km/h, Eta 79,6%-30Sek.
3s - 11,1V - 12x8 RFschmal CFK M25, 9931 rpm, 47 Amp. 520 Watt, VPitch 121 km/h, Eta 79,1%-30Sek.
3s - 11,1V - 13x5 Ae M37, 10162 rpm, 42 Amp. 465 Watt, Schub 2739g, VPitch 77 km/h, Eta 80,5%