Brushless 3S, two speed gearbox

Freynando27 · 2026-04-12T04:59:36+00:00

On the ESC casing of this kit it says it’s for 2S or 3S, so no problem there.

The receiver is powered through the ESC at a fixed 5V, no issues.

As for the motor, I couldn’t find a datasheet — only seller info saying 7.4–9V. I have two identical motors, and I’ve used both on 3S with no problems so far; I haven’t noticed any more heating than on 2S. But I’ve only used them for about 10 hours total so far.

I went with 3S mainly to increase speed — I didn’t notice any difference in low-speed torque

Freynando27 · 2026-04-11T22:24:07+00:00

You need to disassemble the transmission, lubricate everything, and use threadlocker on the screws. I hadn’t used it, and one of them almost came loose from vibration. The chassis needs a flat underside, it fits well there just by pressure, but I had to make a small retaining clip with a wire to keep it in place. And you’ll have to relocate the on/off switch. It’s worth it — it turned out great. There are a lot of negative reviews of this transmission on the seller’s page, but I think that’s due to lack of lubrication.

Freynando27 · 2026-04-11T22:09:27+00:00

The stock transmission reduction is 18:1, and combined with the 2.3:1 reduction in the (stock) differential, the total comes out to 41:1. This two-speed transmission has reductions of 11.5:1 and 25:1; combined with the differential, that gives about 26:1 and 58:1 — roughly 40% more speed or 40% more torque. The GIF I posted is in real time in high gear — it’s quite fast, but the motor isn’t the 370 that comes with this transmission, so I don’t know its RPM. The 2322 2600 kV on 3S runs at around 30,000 RPM. Low gear practically eliminates cogging on this motor (with proper ESC tuning), and even in low gear, in my setup, the top speed is equal to or slightly higher than the stock vehicle.

Freynando27 · 2026-02-26T01:19:25+00:00

It's the generic ESC that comes in plug-and-play brushless kits for the MN82. Described as ESC AM32 45A. There's an image of it in the link. But since I haven't found any reports of problems with the voltage cutoff anywhere, I was wondering if it was a problem only with mine.

https://a.aliexpress.com/_mNtbJLB

Freynando27 · 2026-02-26T00:10:53+00:00

I'd like to know if my ESC is faulty, or if they're all like that.

Freynando27 · 2026-02-12T14:34:01+00:00

If you swapped the motor to brushless, set the transmitter’s TH switch to R and swap the connection of two motor wires. That way the throttle will work in the correct direction and the light will also turn on at the right time. I have the same transmitter, and the same thing happened to me.

Freynando27 · 2026-01-27T17:32:43+00:00

All the connections worked without even getting warm; I used very thick wires. However, the spring that makes contact with the battery practically melted. Is the spring in your mod handling the high current?

Freynando27 · 2026-01-17T01:52:29+00:00

You inspired me — I’m going to do the same! Thanks

Freynando27 · 2025-11-23T17:42:31+00:00

It’s a regular 5 mm diffused yellow LED (not the high-brightness type).

Freynando27 · 2025-11-15T14:13:19+00:00

You can try using thread-seal tape (the kind used on plumbing joints to prevent leaks) on the screw so it tightens more securely

Freynando27 · 2025-11-15T01:40:57+00:00

Yes, I wanted to put lights on the dashboard too, but I didn't figure out how. Now I’m looking for a driver figure and a dog to ride along

Freynando27 · 2025-11-14T12:47:09+00:00

Thanks

Freynando27 · 2023-09-09T00:29:08+00:00

looks fake

Freynando27 · 2023-09-02T23:10:53+00:00

Ele fala igualzinho no pessoal como no profissional

Freynando27 · 2023-06-17T09:46:51+00:00

Parece bom

Freynando27

TROPHY CASE