Losi Micro-B Brushless Conversions Tips and Tricks - WST Racing Products

Losi Micro-B Brushless Conversions Tips and Tricks

When the Micro-B was announced, we instantly preordered them. Nearly 5 months later, we are still trying to extract as much performance out of them as possible. They are just too much fun to race on home built tracks with friends. One of the first things we did was start to figure out the optimal brushless motor setup. 

At first, it seemed like it wasn't going to happen due to the packaging being really tight. But after a handful of measurements and nearly the entire car modeled in CAD. It looked promising. We ordered a handful of servos, mini-Z motors, a ton of pinions, a trusty Hobbywing mini28 then began to design our initial motor plate and top decks. 

This conversion is based on common 1/28 scale electronics such as Mini-Z based electronics. These electronics are common and easy to find since that is an extremely popular micro platform. It's also a nice set of electronics to invest into for other future builds you may get into. 


Five Mandatory Items

  • Motor Plate
  • 1/28 Motor
  • Electronic Speed Control
  • Pinion
  • Receiver

Motor Plate

There are a couple motor plates available. WST were the first with a couple following. Then a handful from various Chinese manufactures, I can't comment to the quality or the fit of those parts. 

WST Racing Products

1/28 Motor

You will find motor sizes like, 1410, 1525, 1626. This usually calls out the size of the motor, but varies by manufacture. Typically the first two digits refer to the diameter of the motor, the second digits refer to the length, the units are usually specified by the manufacture. Hobbywing is straight forward, the 1626 is 16mm in diameter and 26mm in length. 

There are many various kv motors. TBD.

Sensored Motor Examples:
  • Hobbywing 1626 (Shown, Personal Favorite)
  • Furitek Hellfire 1410
  • GL Racing
  • PN Racing V4 Anima
  • Rocket-RC 1525
Sensorless Motors Examples:
  • Furitek Greyhound 1410
  • Rocket-RC (Amazon, Least Expensive Choice)

 

Electronic Speed Control

TBD

Connectors TBD

Sensored/Sensorless

Pinions

Just a couple months ago, pinions were extremely hard to find. The Mod 0.5 pitch and 2mm bore for the motor shaft seemed like an unpopular configuration. The stock Micro-B spur is Mod 0.5 and the 1/28 Motors generally have 2mm shafts. Robinson Racing and Losi were the only manufactures with these pinions. We tested both brands, and found the Losi Pinions to be a bit larger than the 2mm bore they claimed. This led to a wobbly pinion. We only recommended Robinson Racing at the time. 

Since then, a few more manufactures have came out with pinions. 

Robinson Racing

14T - Robinson Racing Products - RRP1814
15T - Robinson Racing Products - RRP1815
16T - Robinson Racing Products - RRP1816
17T - Robinson Racing Products - RRP1817

Surpass Hobbies

TBD

Others

GPM

TBD

Receiver

Micro RX
Other
Specifically, I would recommend the hobbywing hands down. It is a larger diameter than the others, producing really good torque. If you are driving in a garage track, go with a 3500kv. If you are driving a full 1/10 scale track, go with the 6500kv.

With the hobbywing ESC, you can dial up or down the power level to your liking. If you add timing, you can turn the 3500kv motor essentially into a 5000kv.

You will need a motor plate. I can’t recommend ours enough. I’ve been pinged a handful of times about some imported ones being troublesome.

Everyone that has bought this setup LOVES it. I can't find one issue or complaint on this page!

Other small details:
Stock gear covers will not work without modification. We make some if you don’t want to pull out the dremel.

Pinions are easy to find, part numbers are in my motor plate descriptions.
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