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Description
Boom Racing 3S Muscle Winch™ High Voltage Direct Power 40KG Waterproof Servo Winch w/ Free Spool UnitPRODUCT RESOURCES Instruction Manual Muscle Winch 3S BR 40SW 3S_1653753680. Jpg 430. 51 KB TAGGED CATEGORIES: WINCHES PRODUCT INFORMATION: Boom Racing's Muscle Winch is a dedicated and fully waterproofed internal servo winch designed and engineered from the ground up, delivering strong pulling power and reliable performance for any R C builds. Free Spool Unit A dual trigger free spool unit is integrated into the Muscle Winch for quick winch release.
PRODUCT RESOURCES
TAGGED CATEGORIES:
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Boom Racing's Muscle Winch™ is a dedicated and fully waterproofed internal servo winch designed and engineered from the ground up, delivering strong pulling power and reliable performance for any R/C builds.
Free Spool Unit
A dual-trigger free-spool unit is integrated into the Muscle Winch™ for quick winch release. There are two ways to trigger the free spool mechanism; one by pressing the button on top of the servo winch, and the other by pulling the knob on the bottom. This dual-trigger design makes the free-spool unit accessible from both sides of the servo winch, which is a major advantage when designing the layout of your servo winch placement.
To release the rope, press the button on top of the Muscle Winch™ or pull the knob from the bottom. This will disengage the locking mechanism allowing you to pull the rope out. Once you have reached the desired length, then release either the button or knob and continue pulling on the rope until you hear a “click” sound. The locking mechanism will re-engage and you are ready to winch.
The Muscle Winch can also be used without the free spool. You can use the radio to release the cable.
The Muscle Winch™ operates at up to 12.6V which produces up to 40KG (555oz) of torque and features a billet aluminum case and full metal gears for strength and durability. A metal scale winch hook is included for the icing on the cake!
Requires a spare channel with a three-position switch to control the winch.
Specification:
- Integrated Free Spool Unit
- Battery: 2-3S Lipo
- Operates at up to 12.6V
- Torque: 28kg/cm (389oz/in) @ 8.4V and 40kg/cm (555oz/in) @ 12V
- Operating Speed: 83RPM @ 8.4V and 118RPM @12V
- Fully Waterproof IP67
- Full metal case
- Full metal gears
- Metal hook included
- Nylon winch line 68kg (2 meters) included
- Size: 54mm x 46.5mm x 20mm
- Weight: 88.5g
Includes:
- Muscle Winch with Free Spool Unit
- Nylon winch line (2m)
- Metal Hook
- Decal sheet
- Instruction Manual
Optional accessories:
- Switch Button (2pcs) #BR-36Switch
- Easy Access Knob #BR-36Knob
- Universal Routing Kit #BR-36Route
- 220 Fast Gear Set #BR-36Gear
- Servo Winch Mount Kit for BRX01 #BRLC7200
Replacement:
- Nylon Winch Line 2.5m & Metal Hook #BRSW36-RS3
- Nylon Winch Line 2.5m (2) #BR-36Line
- Waterproof Silicone Seal (2) #BR-36Seal
- Stainless Steel Barrel #BR-36Barrel
Warranty: This product is covered by Boom Racing factory warranty. All electronic products are guaranteed defect-free. Please refer to the warranty information from the manufacturer.
Additional Notes: If the Winch does not properly work as intended, when using the following radio systems, some setup is known to work:
*To avoid damaging the Muscle Winch, remove the hook from the rope if it is already attached before setting up the radio.
Caution:
The battery must be disconnected from the ESC (if ESC has a power switch) and Muscle Winch when not in use to prevent damage to the winch and battery. Do not connect the winch directly to the battery balance port. Damages caused by the above action(s) will void the warranty.
Futaba 7PX/7PXR radio:
- 1) Be sure to use the correct System Mode corresponding to the receiver according to the 7PXR user manual. [ Setup location: Home > Menu > Linkage > Receiver ]
- 2) Turn off Channel 3 connection from the DT3 button. Turn on Channel 3 connection from the DT6 button on the radio which provides a three-position switch function. Then increase the DT6’s “Step” to 100. [ Setup location: Home > User Menu > Fifth page > Trim / Dial select ]
- 3) Activate the Muscle Winch by pushing the DT6 button after the electronics are connected. The winch spool will start rotating and might judder. Adjust the Left and Right endpoints, in values 100 or above, to get rid of the juddering in both rotational directions. [ Setup location: Home > User Menu > First page > End point > Channel 3 ]
Fly Sky Noble NB-4 radio:
- 1) Go into settings on the first page and select Assign.
- 2) Select TR1-FB as a button for your winch control.
- 3) On that screen for Type, select 3 POS, TR1-FB select CH3, and TR1-FB select REV.
- 4) Once you are done with steps 1-3 go back to the main menu and select RX SET.
- 5) Select Servo Frequency.
- 6) Two options here, either select Analog or Digital servo. If selecting Analog, the setup is complete.
If you want to use Digital, go on Custom set to 250Hz and the setup is complete.
Sanwa M12RS radio:
- Set to modulation FH3E
- Winch channel set to NOR
- New Bind
- Color: Black
- Package total weight: 140.00 grams (incl. packaging)
- Package size: 8.00 x 11.00 x 4.00cm
- Factory description: Boom Racing 3S Muscle Winch™ High Voltage Direct Power 40KG Waterproof Servo Winch w/ Free Spool Unit
- Manufactured by Boom Racing
- Manufacturer number: BR-40SW-3S
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- 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
4.6 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
This is a must have!
Size: Upgrade Queen (2 Pack)
One of my favorite purchases! I love that you can take stuffing out as needed. My husband kept majority of his in because he likes a full pillow. I prefer a flatter, soft pillow so I took out probably half of the stuffing. We both love them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 5
Excellent pillow.
Size: Upgrade Queen (2 Pack)
Wow these pillows are fantastic!!! First off they are good quality and sized as described. I'm forced to sleep on my back since I use a cpap every night. They suggest taking some filling out for "back sleepers". But in my case, I am disabled, overweight, and the way I position myself on a pillow is probably unique. I have a little of my shoulders, head and neck on the pillow. I didn't have to remove any filling. It was pretty good at first and after about a few day/nights, everything settled in just perfectly. It's truly one the finest pillows I've owned to date. (Part of my disability is a very painful neck & muscle malady, my head leans far to the right. Basically feels like a crick in your neck that never goes away. It's called tortacollis or dystonia depending who you talk to.) Because of this, I have truly spent hundreds and hundreds of dollars on different types and styles of pillows. A very select few have worked out fairly well over time until I found this one. As I said in the beginning, this is an excellent pillow and a great value as well. Hopefully this will work as well or even better for others. I purchased a 2 pack this time, 1 for home and the other for our RV. Definitely buying. another 2 pack to keep for future replacements. Pillows simply don't last forever. They get funky in time. No matter how clean you try to stay with bedding and personal hygiene, it just happens eventually. Sweet dreams. :~)
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Reviewed in the United States on June 23, 2025
★★★★★ 1
👎🏽 a
Size: Upgrade Queen (2 Pack)
Incredibly thick and firm pillows. Not great for stomach or side sleepers. They alway end up on the floor cause we find them uncomfortable. Don’t recommend, practically unusable
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Reviewed in the United States on November 5, 2025
★★★★★ 5
It works! Quality pillow.
Size: Standard (1 Count), Color: Original White (Cooling)
This does actually provide a cooling effect, and it's very comfortable! The accompanying literature is helpful too. I believe this to be a quality pillow for the price.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Most comfortable pillow I’ve ever slept on
Size: Queen (1 Count), Color: Crescent White(cooling)
This is the most comfortable pillow I have ever slept on. It doesn't mash down like other pillows. Cradles my neck perfectly plus it’s cool. I broke my neck a couple of years ago and this pillow feels very good and comfortable. Definitely recommend to everyone. Ive used it since May and it’s retained its shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
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