---
product_id: 527759310
title: "Hobby Fans Waterproof S3650 3900KV Brushless Motor 3.175mm Shaft for 1/10 RC Car Truck"
brand: "fans"
price: "€ 33.67"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.ie/products/527759310-hobby-fans-waterproof-s3650-3900kv-brushless-motor-3-175mm-shaft
store_origin: IE
region: Ireland
---

# Waterproof Build 4-Pole Design 3900KV Power Hobby Fans Waterproof S3650 3900KV Brushless Motor 3.175mm Shaft for 1/10 RC Car Truck

**Brand:** fans
**Price:** € 33.67
**Availability:** ✅ In Stock

## Summary

> 🚗 Rev Up Your Ride with Unmatched Power!

## Quick Answers

- **What is this?** Hobby Fans Waterproof S3650 3900KV Brushless Motor 3.175mm Shaft for 1/10 RC Car Truck by fans
- **How much does it cost?** € 33.67 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/527759310-hobby-fans-waterproof-s3650-3900kv-brushless-motor-3-175mm-shaft)

## Best For

- fans enthusiasts

## Why This Product

- Trusted fans brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smooth Operator:** Precision balanced rotor for maximum RPM and reliability.
- • **Unleash the Power:** Experience the thrill of 3900KV performance for your 1/10 RC car!
- • **Durable & Reliable:** Crafted from CNC machined 6061 T6 aluminum for superior heat dissipation.
- • **Ready for Adventure:** Waterproof construction means you can take on any terrain!
- • **Precision Engineering:** 4-pole, 12-slot design ensures high torque and efficiency.

## Overview

The Hobby Fans Waterproof S3650 3900KV Brushless Motor is designed for 1/10 RC cars and trucks, featuring a high-torque 4-pole design, high purity copper windings for efficiency, and a robust waterproof build. Its CNC machined aluminum heatsink ensures durability and optimal performance, making it the perfect upgrade for any RC enthusiast.

## Description

Full description not available

## Features

- 1/10: S3650 3900KV motor, suitable for 1/10 RTR RC car
- 4 Pole: 4 pole 12 slot high-torque motor design
- High performance: High purity copper windings maximizes efficiency
- High Torque: Precision engineered for maximum energy conversion. Precision balanced rotor, smoothness for best reliability and maximum RPM
- Superior Material: CNC machined 6061 T6 billet aluminum heatsink can

## Product Details

- **Brand:** Hobby Fans
- **Speed:** 50000 RPM
- **Voltage:** 12 Volts
- **Horsepower:** 900 Watts
- **Material:** Aluminum

## Images

![Hobby Fans Waterproof S3650 3900KV Brushless Motor 3.175mm Shaft for 1/10 RC Car Truck - Image 1](https://m.media-amazon.com/images/I/61i80lBKlkL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by A***T on October 16, 2023*

Really fast in my Traxxas bandit

### ⭐⭐ It's not what it should be
*by B***N on December 26, 2023*

This motor does run good but it does not perform like 3900kv. I have a 3900kv of a different brand and it has more torque acceleration and speed by a long shot. This motor matches my 4300kv motors in performance.

### ⭐⭐ Don't use 3s
*by J***N on May 21, 2024*

It will run 3s but will get over hot really quick especially with the fan they include even and after 4 minutes of driving pavement on a 2200mah 3s 25c battery not even holding it wide open just half throttle intervals and died and locked up when power is applied

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**Shop now:** [https://www.desertcart.ie/products/527759310-hobby-fans-waterproof-s3650-3900kv-brushless-motor-3-175mm-shaft](https://www.desertcart.ie/products/527759310-hobby-fans-waterproof-s3650-3900kv-brushless-motor-3-175mm-shaft)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-02*