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Xcelorin 10

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 Sensorless Brushless Motor Instructions 

Xcelorin 10

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 Sensorless Motors v1.0 

LOSB9430 4800Kv 

 LOSB9431 

6400Kv 

 LOSB9432 

7500Kv 

 

Thank you for purchasing the Losi™ Xcelorin™ sensorless motor.  This motor will provide you the 

benefit of the latest in brushless technology. 
We believe it will be to your benefit to take the time and effort to read these instructions. 
We are confident you will be satisfied with the performance of the Xcelorin Sensorless Motor. 

Losi/Horizon Support 

If you have any questions concerning operation of your Xcelorin Motor, please call Horizon customer 

support at 1 877 504 0233. 
You are welcome to call us with any support issue or question you may have. 
 

Safety Precautions and Warnings: 

 

 

Please 

r

ead instructions before operating.

 

 

Do Not use a Schottky Diode with this motor. 

 

 

Avoid over-gearing by monitoring temperature.

 

 

Operating temperature should not exceed 165F – 175F (74C – 80C) degrees. 

 

 

Do Not over tighten the motor mounting screws. Damaged threads are not covered under 

warranty.

 

 

Ensure the motor screws do not go into the motor more than 0.180 in (4.5mm).

 

 

Specifications: 

 
 LOSB9430  LOSB9431  LOSB9432 
Sensorless 

Construction 

Yes Yes Yes 

Rotor 

Magnet 

Sintered Sintered Sintered 

RPM @ 7.2V 

34,560 

46,080 

54,000 

RPM per Volt 

4800 

6400 

7500 

Power 

(W) 

500 580 630 

Efficiency 

90% 88% 85% 

 

Common Specifications: 

Precision Ball Bearings 
Compatible with both 2S and 3S LiPo batteries, and from 4 to 12 cells 

Weight: 6.35 oz (180 g) 

 
 

Installation and Maintenance: 

  

 

 

Make certain the 3mm motor screws being used do not extend into the motor more than 

0.18 in (4.5mm).  Otherwise, you can internally damage the stator windings. 

 

With a Sensorless motor you will need to connect the 3 ESC motor leads from the Electronic 

Speed Control (ESC), one to each tab. 

 

If the motor runs in the opposite direction desired, unplug any two motor wires, reverse the 

location and plug back together. 

 

Do not over-tighten the motor screws. 

 

Brush off dirt and dust frequently from the bearings.  Place a drop of oil on each bearing at 

the same time. 

 

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