B40-7L Comp + 6.7:1 Kv 3960
B40-7L Comp + 6.7:1 Kv 3960
Item No. 10090903
EAN: 4250320247012
$434.60
B40-7L Comp + 6.7:1 Kv 3960
Product Description and Features
B40-7L Comp + 6.7:1 Kv 3960 gear drive is specially designed for F3J and F3B up to 3.0kg take-off weight.
The integrated high-performance fan optimally cools the motors of the B40-Competition. The running noise is also minimized by asymmetrically arranged air outlet holes. The external housing design with milled cooling grooves offers perfect heat dissipation with minimum weight.
The B40-Competition motors are equipped with segmented high-performance rotors made of optimized magnetic material.
The B40-Competition has larger ball bearings than its predecessor, the Hacker B40. This significantly reduces friction and optimizes longevity. In addition, a stronger inner shaft with a diameter of 5 mm prevents vibrations at extreme speeds. The front and rear end shields are bolted together. The shaft is fitted with an integrated pinion. The increased power output of the B40 Competition motors is ensured by a high-performance gearbox with a 6 mm shaft.
Accessories
You will find suitable controllers, batteries and a suitable propeller in the Accessories tab.
Delivery contents
B40-7L Comp + 6.7:1 Kv 3960 gearbox drive (consisting of B40-7L Competition and Hacker 6.7:1 gearbox) and instructions.
| Specifications | |
| max. power range [W] (max.15 sec.) | 1200W (max. 10sec.) |
| Poles | 2 |
| Turns | 7 |
| Idle current (I0) at 8.4V [A] | 4 |
| Internal resistance (Ri) [Ohm] | 0,009 |
| Gear reducing | 6,7:1 |
| Output shaft | 6mm |
| Recommended timing [°] | 0° – 5° |
| Switching Frequency [kHz] | 8 |
| Controller recommendation [A] (depending on setup) | 75 – 100 |
No-load speed per Volt (KV) without gearbox | 3960 |
| Dimensions and weight | |
| Weight [g] | 237 |
| Length [mm] | 89.7 |
| Diameter [mm] | 29 |
| Outer diameter [mm] | 29 |
| 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 |
