One very important thing you need for miniature electronics (including small scale RC vehicles) is good wires to connect everything.

At the moment I’ve settled on one specific type of wire, which is sold as UL10064.

UL10064 wire product description

It has these good properties:

  • The wires itself are thin. I use 34 AWG, but it is available up to 40 AWG.

  • Core is multistranded, so offers more flexibility and "springiness" compared to single strand. 34 AWG is stated to have 7 strands of 0.06mm wire.

  • Insulation is thin as well. Total thickness of 34 AWG wire is stated to be 0.32mm.

  • Insulation is heat-resistant, so does not expose extra wire when soldering

  • it is available on aliexpress, and is very cheap.

In case even thinner options are needed, single copper wire in enamel cover (called jumper wire) can be used. Insulation can be stripped by burning it off in melted solder (maybe at higher temperatures than usual soldering, e.g. 380), and you get an extremely thin wire that can go in anywhere. It is single core though, so it will not bend that much before breaking.

Jumper wire product description

Here are other options that are available, look good on pictures, but which I don’t recommend:

UL1571, goes up to 32 AWG, multicore, insulation is PVC, so shrinks when soldering.

UL1007 - single strand wire in PVC insulation, so not as flexible and shrinks when soldering. It is also not available in thinner gauges.

30 AWG variant of this marked as "wire wrapping" can be bought as a roll of 8 colors 250m (probably total, not each color). The roll itself is marked as UL1422/UL1423, which is misleading. Neither of UL-label is present in the description of the item and in general it’s lacks information present in other lots. The only attractive point for this item is price, which is around $5 for the whole roll.

UL1423, goes up to 38 AWG, single-core, turned out to be very inflexible. Insulation is high-temperature PVDF (Polyvinylidene Fluoride), which is very difficult to remove as it’s too thin for wire strippers.

Worthy of notice:

UL3135 - multicore wires in silicone insulation. Are available up to 32 AWG, but silicone insulation is much thicker than PVC and PTFE, around 1mm. So not recommending for internal wiring of vehicles, but it’s very nice for everything else, as it’s flexible, heat-resistant, and strips easily.

I have not tried:

UL1332 - seems to be the same as UL10064, multicore, PTFE insulation, but only goes up to 30 AWG.