B50-13XL Competition + 6.7:1 Kv 1250
B50-13XL Competition Kv 1250 with 6.7:1 gearbox
Product description and features
The B50-13XL Competition Kv 1250 with 6.7:1 gearbox was specially designed for 16kg gliders with a 10S Lipo.
The integrated high-performance fan cools the B50 competition motors in the most effective way. The running noise is also reduced to a minimum with asymmetrically positioned air outlet holes. The external housing design with milled cooling grooves offers perfect heat dissipation with minimum weight. The B50-Competition is equipped with larger ball bearings than its predecessor, the Hacker B50. This significantly reduces friction and optimises service life. In addition, a stronger, internal shaft with a diameter of 6 mm prevents vibrations at extreme speeds. The front and rear end shields are bolted together. The shaft is equipped with an integrated pinion. The increased power output of the B50 Competition motors is ensured by a high-performance gearbox with a 6 mm shaft. As a further special feature, all B50-Competition motors are equipped with segmented high-performance rotors made of optimised magnetic material.
Ready-to-install complete system
The electric motor and gearbox are supplied ready for installation. The complete drive system is assembled, tuned and tested before delivery.
Delivery contents
B50-13XL Competition + 6.7:1 Kv 1250 gearbox drive (consisting of B50-13XL Competition Kv1250 and Hacker gearbox 6.7:1) and manual.
Drive recommendation
| Specifications | |
| max. power range [W] (max.15 sec.) | 2800 |
| Poles | 2 |
| Turns | 13 |
| Idle current (I0) at 8.4V [A] | 1.8 |
| Internal resistance (Ri) [Ohm] | 0.021 |
| Gear reduction | 6.7:1 |
| Recommended timing [°] | 0 – 5 |
| Switching Frequency [kHz] | 8 |
| Controller recommendation [A] (depending on setup) | 80 – 130 |
| Idle speed per volt (kv) without gear | 1250 |
| Dimensions and weight | |
| Weight [g] | 405 |
| Length [mm] | 105 |
| Outer diameter [mm] | 37 |
| Shaft diameter [mm] | 6 |
| Delivery contents | |
| Prop Adapter | No |
| Mounting cross | No |
| Gold plug mm (recommended) | 4 – 5.5 |
| Backmount mountable | No |
| Front mountable | Yes |




