SKU: 54996420538

HobbyStar 3665 4-Pole Waterproof Brushless Sensorless Motor

$20.70 $23.00
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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

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Description

HobbyStar 3665 4-Pole Waterproof Brushless Sensorless MotorHobbyStar 3665 4 pole brushless motor provides increased torque when compared to a shorter can 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

HobbyStar 3665 4-pole brushless motor provides increased torque when compared to a shorter can 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 (0.2mm) stator laminations 

Voltage recommendations in the table below 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. 

 

      Shipping Notes
      • Free Standard Shipping on $100+ Orders to the USA.
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      • Delivery to the USA:
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      • If time is of the essence, please consider selecting expedited delivery for faster service.
      Exchange/Return Notes
      • We offer a 30-day return/exchange service after receiving.
      • Final sale items are not eligible for returns or exchanges.
      • To process your return/exchange, please contact us at [email protected]
      • Please click here for more details>>> Return & Exchange Policy
      SKU: 54996420538

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      4.0 ★★★★★
      Based on 25 reviews
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      Product Reviews
      M
      Verified Purchase
      MH
      Fort Morgan, US
      ★★★★★ 3
      Runs large with gaping arm holes.
      Size: Large, Color: White
      This runs extra large and the arm holes are gaping. You can see your undergarments through the arm holes. I am hoping that the shirt shrinks in the wash.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on January 17, 2026
      M
      Verified Purchase
      Marie Grey
      Omaha, US
      ★★★★★ 5
      Fantastically Awesome!
      Special Size: Wide Leg Crop, Size: 12, Color: Black
      They are spectacular! Very nice quality and I love how they fit. Got the black and ice blue. Having read the reviews, I did go ahead and sized up 2 sizes and it worked perfectly. That is the only con in these jeans, they run at least 2 sizes too small. But, being 100% cotton, I expect that they will shrink down to pretty close my normal size. (I like jeans loose, so it's all good.) Got the cropped ones and I just love them. They are normal length now (because I am short), but after drying, I think they will end up at top of my ankle, and that is cool. The fabric is on the heavy side, but I expected them to be much heavier than what I got. I have a pair of Lee wide leg jeans, and they are much heavier than these. I hope that helps someone in terms of comparison. But overall, these jeans are fantastically awesome - and on sale too boot!! Buy them. They are very wonderful. ❤️
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on June 11, 2026
      E
      Verified Purchase
      Eliza
      Boise, US
      ★★★★★ 5
      Insanely great jeans for the price!
      Special Size: Wide Leg Crop, Size: 12, Color: Medium Blue Vintage
      I’m obsessed with these jeans. They’re comfortable and I think they legitimately look great. I had a baby 6 months ago and my body is “in transition” so I didn’t want to buy anything too expensive. These are cute, fit well, good quality. Excellent for short girls - I’m 5’ tall and they’re exactly the right length for a full-length jean. I feel like they’re fashionable without being too trendy (they work for 30somethings as well as 20somethings). They’re nice thick cotton with very little stretch. Because of that I’d be conservative with sizing because they do stretch significantly when you wear them. I got these in the lighter blue, too. The darker wash is slightly smaller and I wound up liking the color better, too. But the light wash is nice.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on November 16, 2025
      L
      Verified Purchase
      Lynn
      Carnegie, US
      ★★★★★ 4
      Excellant value
      Special Size: Wide Leg Crop, Size: 14, Color: Rinse, Special Size: Wide Leg Crop, Size: 14, Color: Rinse
      Purchased the “cropped” length. I am 5ft 3.5 inch. Weight 170lbs (42 inch hip/38 inch waist) normally wear a size 10/12 or 31 in jeans, depending on the brand. I ordered up at 14 for these based on other reviewers. (When held up to other jeans they were the same as a Talbots 10 at the waist) Prewash they felt good, a little big& length hit at the top of my foot. After wash and dry, the fit was almost perfect and the length was at lower ankle. Ordering up is probably the right choice, although I think I could have been comfortable in a 12 (with no drying). They are a tad bit too long for a “cropped” look IMO. The wide leg is a true wide leg and falls straight from the waist. The material is heavy and there is almost no give/stretch - so a traditional denim. This is the dark blue and it is a true dark blue. You can’t beat the price, excellent value.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on March 31, 2026
      M
      Verified Purchase
      MCC
      New York, US
      ★★★★★ 3
      Be careful when washing!!!
      Special Size: Wide Leg Crop, Size: 12, Color: Iced Blue Light Wash
      Loved the jeans but after I washed them only after wearing one time, the color got completely stained. I washed on gentle with like colors and somehow the entire jeans turned splotchy. So upsetting because the fit and feel were great.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on January 3, 2026

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