---
product_id: 139996095
title: "HobbyStar 3660 4-Pole Waterproof Brushless Sensorless Motor for RC Car, Truck 3800KV, 3.5T"
brand: "hobbystar"
price: "R$659"
currency: BRL
in_stock: true
reviews_count: 1
url: https://www.desertcart.com.br/products/139996095-hobbystar-3660-4-pole-waterproof-brushless-sensorless-motor-for-rc
store_origin: BR
region: Brazil
---

# 3800KV Power Waterproof Design Easy Connection HobbyStar 3660 4-Pole Waterproof Brushless Sensorless Motor for RC Car, Truck 3800KV, 3.5T

**Brand:** hobbystar
**Price:** R$659
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your RC Game with HobbyStar Power!

## Quick Answers

- **What is this?** HobbyStar 3660 4-Pole Waterproof Brushless Sensorless Motor for RC Car, Truck 3800KV, 3.5T by hobbystar
- **How much does it cost?** R$659 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/139996095-hobbystar-3660-4-pole-waterproof-brushless-sensorless-motor-for-rc)

## Best For

- hobbystar enthusiasts

## Why This Product

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

## Key Features

- • **Conquer Any Terrain:** Drive confidently in extreme conditions with a fully waterproof motor.
- • **Efficient Powerhouse:** High-purity copper windings ensure maximum efficiency and longevity.
- • **Unleash Unmatched Torque:** Experience superior performance with a 4-pole, 12-slot design.
- • **Plug-and-Play Convenience:** Pre-installed 4.0mm gold-plated bullet plugs for hassle-free setup.
- • **Smooth Operation Guaranteed:** Precision balanced rotor and oversized bearings for seamless performance.

## Overview

The HobbyStar 3660 4-Pole Waterproof Brushless Sensorless Motor is engineered for high-performance RC enthusiasts, delivering 3800KV power and exceptional torque. Its waterproof design and easy installation make it perfect for any adventure, while high-purity copper windings and precision components ensure efficiency and reliability.

## Description

HobbyStar 3660 4-Pole Waterproof Brushless Sensorless Motor for RC Car, Truck 3800KV, 3.5T

## Features

- HobbyStar 3660 4-pole brushless motor provides increased torque when compared to a standard 3650 while still providing top-end power.
- Versatile waterproof design allows you to drive in extreme conditions and motor leads come with pre-installed 4.0mm gold-plated bullet plugs for easy, no-soldering connection.
- Features: 4-pole motor with 12-slot high-torque design High-purity copper windings maximize efficiency High-RPM ABEC5 oversized bearings Precision balanced rotor for smooth operation and maximum RPM Super-thin (0.35mm) stator laminations
- Specs: KV: 3800 Max Voltage: 3S Rotor Poles: 4 Max Amps: 92A IO: 2.8A Resistance: 0.0083 Watts 1200W Max RPM: 50,000 Length: 60mm Diameter: 36mm Weight: 215g Shaft: 3.175mm x 17mm Connectors: 4mm bullet
- NOTE: PICTURE IS GENERIC, YOU WILL RECEIVE KV IN LISTING TITLE. Voltage recommendations are guidelines for the voltage you can safely run. It is still critical that the user monitor motor temps and adjust gearing if necessary, any motor can overheat to the point of destruction if over-geared even when running at or below the rated voltage.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material Type | Copper |

## Images

![HobbyStar 3660 4-Pole Waterproof Brushless Sensorless Motor for RC Car, Truck 3800KV, 3.5T - Image 1](https://m.media-amazon.com/images/I/41I22QZ+4UL.jpg)
![HobbyStar 3660 4-Pole Waterproof Brushless Sensorless Motor for RC Car, Truck 3800KV, 3.5T - Image 2](https://m.media-amazon.com/images/I/31+wSgEUN-L.jpg)
![HobbyStar 3660 4-Pole Waterproof Brushless Sensorless Motor for RC Car, Truck 3800KV, 3.5T - Image 3](https://m.media-amazon.com/images/I/31RmGpoaWzL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Amazing motor
  

*by D***S on Reviewed in the United States on July 30, 2020*

So much power... I put this in a red at blackout to replace a 550 brushed system and it launches so hard on stock gears that to does back flips... Even on a higher gearing (55t spur has a 18t motor gear stock, I went to 21t) and 3s lipo, you can't put the throttle all the way down until you are already going pretty fast or it will just corkscrew from all the Torque. For reference, the brushless pro version of this car uses the 55t/18t gears with a f540 motor of the same 3800kv and is pretty fast but way easier to control. The 3660 size and high quality of this motor just makes a huge performance jump, especially when on 3s.

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**Shop now:** [https://www.desertcart.com.br/products/139996095-hobbystar-3660-4-pole-waterproof-brushless-sensorless-motor-for-rc](https://www.desertcart.com.br/products/139996095-hobbystar-3660-4-pole-waterproof-brushless-sensorless-motor-for-rc)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-08*