Thread Tools
Sep 29, 2011, 12:05 AM
Burning & Turning
justy g's Avatar
Thread OP

Solder or use bullet connectors when making my ESC wires longer


I need to make my Esc wires longer and I understand that I need to lengthen the motor/esc wires. My motor wires are a smaller gauge than my esc wires, so I'm going to use the same gauge wire as my esc 14awg is this correct?

Is it best to solder the wires from motor to Esc or use bullet connectors both sides from the motor to Esc?


Sign up now
to remove ads between posts
Sep 29, 2011, 03:37 AM
An itch?. Scratch build.
eflightray's Avatar
As long as the wire gauge is equal to the ESC there should be no problems, (other than the extra weight).
If the motor was drawing a very low current compared to the ESC's rating, then you could drop a gauge to save weight, but smaller gauge can also mean slightly higher resistance.

With extension leads, I personally still like to have connectors at one end, either the motor or ESC end depending on which is more accessible, (solder at the other end). It allows me to reverse the motor if required, as invariably it will run the wrong way.
Sep 29, 2011, 04:15 AM
Burning & Turning
justy g's Avatar
Thread OP
Thanks for your reply.

I will solder the esc connections and put bullet connectors at the motor end
Sep 29, 2011, 08:36 AM
Retired in NC
Rich in ILM's Avatar
Originally Posted by justy g
Thanks for your reply.

I will solder the esc connections and put bullet connectors at the motor end
Alway solder when you have a choice. Better mechanical and no chance for corrosion.
Sep 29, 2011, 08:02 PM
Aka: Tom Jenkins
ApexAero's Avatar
An electrical designer friend suggested to use a 1/4in length of brass tubing rather than butt solder or parallel and heat shrink over it turns out smooth! I suggest extending the motor wires and ad bullets and leave the esc stock xcept for adding bullets(motor side)

Quick Reply

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Mini-HowTo How to Solder Bullet Connectors on Motor and ESC Lt.Smash Beginner Training Area (Aircraft-Electric) 42 Sep 24, 2017 12:28 AM
Discussion Soldering "bullet" connectors to ESC/motor wires Tony_Fletcher Power Systems 12 Feb 26, 2009 10:50 AM
Alert Can't Solder Bullet Connectors too Motor Wire! Pipercub18 Power Systems 11 Jun 09, 2008 12:57 AM
Discussion How to solder gold bullet connectors? cloud-9 Batteries and Chargers 40 Jan 26, 2008 08:28 AM
Solder esc to motor or use connectors? MarkNZ Parkflyers 5 Apr 05, 2005 09:58 AM