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Brushless Nano Battery Lead Upgrade

Lately, there’s been a number of threads created where Nano CP X owners who have installed a brushless motor on their heli, have learn that upgrading to a thicker gauge wire improved performance noticeably. There is a noticeable increase in pop acceleration and less to no bogging.

I wonder how much of it is due to the thicker gauge wire or if the improvement comes from the thicker wire being more tolerant of a sloppy solder joint?

I went ahead and took a photo of the recommended wire gauge side-by-side in case you are curious.

20ga silicone wire, 24ga silicone wire, 24ga(?) servo wire, 26ga(?) stock Nano CPX wire

I always like using servo wires. Copper is a good conductor and the servo wires are usually made of copper. The only thing is, it’s insulating sleeve isn’t as heat tolerant as the silicone wires. Another property that I like with the silicone wires is that it’s really flexible.

Here’s some weight difference between 24ga silicone wires versus what I think are 24ga servo wires. The stock Nano CP X leads of the same length was added to compare the weight. Every gram counts when modding the Nano CP X for performance.

I think the most important thing is having a good solder joint. To ensure there’s no impurities in your solder joint, you have to use flux. A hot iron and flux will make a solder joint solid and keep the resistance low.

Make sure to properly insulate the solder connection. And I like to stretch a piece of shrink tubing so it fits over the connector. This ensure you don’t fatigue the soldered joint.

Recent discussion on this topic:

BL Nano- Bog to HOT DOG by 737 Driver
Guys, no joke… mild bl conversions “must” have battery leads soldered to esc!!! by mixfisto
Proof that direct soldering battery connector to ESC makes a difference by P@reez (Has some sample videos of before and after)
Having trouble soldering heavier gauge wires to the ESC? by Dylwad


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