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- E-flite Prop Adapter with Setscrew 4mm EFLM1931 Spinner...
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Item #:
100121576
E-flite Prop Adapter with Setscrew 4mm EFLM1931 Spinners & Hub Nuts
Item #:
100121576
SAR 52
Price Details
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Imported from USA store
QTY:
Only 2 items left in stock.
Order now and get it around Tuesday, August 25
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What Stands Out
Precision Fit
Designed for seamless integration with E-flite 4mm spinners, ensuring stability and reliability in high-performance models.
Durable Material
Constructed from high-quality materials, providing longevity and resilience for repeated use in various flying conditions.
Easy Installation
Simple setscrew mechanism allows for quick and hassle-free attachment, making it ideal for hobbyists looking to save time during assembly.
Product Details
- Package Dimensions: 2.032 H x 10.16 L x 4.572 W (centimeters)
- Package Weight: 0.022 pounds
- Country of Origin : China
| Brand Name | E-flite |
| Model Number | EFLM1931 |
| Manufacturer | E-flite |
| UPC | 605482773031 885908838562 |
| Global Trade Identification Number | 00605482773031 |
| Set Name | Prop Adapter with Setscrew, 4mm |
| Manufacturer Part Number | EFLM1931 |
| Item Dimensions | 4 x 2.1 x 0.64 inches (10.2 x 5.3 x 1.6 cm) |
| Item Weight | 0.02 Pounds (10 grams) |
| Material Type | Aluminum |
| Color | Silver |
| Brand | E-flite |
| Material | Aluminum |
| Item dimensions L x W x H | 4 x 2.1 x 0.64 inches (10.2 x 5.3 x 1.6 cm) |
Who Should Buy?
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RC Aircraft Hobbyists
Ideal for hobbyists building or upgrading RC aircraft, providing a reliable connection for propellers.
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Model Airplane Builders
Perfect for builders needing precision components to enhance their model airplane's performance and appearance.
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Beginners in RC
Great for newcomers to RC flying, offering ease of installation and durability for reliable use.
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Heavy-Duty Applications
Not suitable for heavy-duty applications requiring higher torque or large-scale propellers.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the purpose of the E-flite Prop Adapter with Setscrew 4mm EFLM1931?
Answer: The E-flite Prop Adapter with Setscrew is designed to securely attach propellers to electric motors, ensuring a stable and reliable connection during flight. This adapter features a 4mm fitting, making it compatible with various electric propulsion systems. Using a quality prop adapter enhances performance and reduces the risk of propeller slippage, ensuring that your aircraft operates efficiently and safely during flight. It is particularly beneficial for hobbyists looking to upgrade or replace worn-out components for projects like RC airplanes and drones. -
Question:
Is the E-flite Prop Adapter compatible with all types of electric motors?
Answer: The E-flite Prop Adapter is primarily designed for 4mm shaft electric motors, making it compatible with a wide range of electric power systems used in RC applications. It is essential to check the motor's shaft diameter and ensure it matches the adapter's specifications for optimal performance. Using the correct prop adapter not only enhances the aircraft's aerodynamics but also helps prevent damage to both the motor and the propeller, ultimately improving the overall flight experience. Ideal for modelers who regularly swap out propellers or upgrade their setups. -
Question:
How do I install the E-flite Prop Adapter with Setscrew?
Answer: To install the E-flite Prop Adapter, begin by loosening the setscrew located on the adapter with an appropriate tool. Next, slide the adapter onto the motor shaft until it is properly positioned. Tighten the setscrew securely to ensure a firm grip on the shaft. Using Loctite or similar thread-locking compound on the setscrew can enhance stability during prolonged usage. This installation process is ideal for hobbyists who frequently change propellers or perform maintenance on their RC crafts, ensuring a tight fit that promotes better performance. -
Question:
Can I use the E-flite prop adapter with different sizes of propellers?
Answer: Yes, the E-flite Prop Adapter is versatile and can accommodate various propeller sizes that fit a 4mm shaft. The suitability of a propeller also depends on the aircraft's specifications and requirements for optimal performance. When selecting a propeller, consider the size and pitch that align with your aircraft's intended use, such as speed or agility. This adaptability makes it a practical choice for enthusiasts looking to fine-tune their RC aircraft for varying flying situations, enhancing overall experience and performance. -
Question:
What materials are used in the construction of the E-flite Prop Adapter?
Answer: The E-flite Prop Adapter is typically crafted from durable materials such as aluminum or high-strength plastic, which provide a lightweight yet robust build. The choice of materials ensures longevity and resistance to wear and tear during frequent use. This robustness is crucial for maintaining structural integrity during flight, especially for high-performance applications. For RC pilots who demand reliability and performance from their gear, using quality components like this prop adapter is essential for ensuring smooth operations in various flying conditions. -
Question:
What features should I look for in a prop adapter?
Answer: When looking for a prop adapter, key features to consider include compatibility with shaft size (like the 4mm of E-flite), the quality of materials for durability, and the design of the setscrew for secure attachment. Additionally, consider adapters that offer surface finish treatments to prevent corrosion and enhance grip. This attention to detail is vital for both casual and competitive RC flying enthusiasts, as it can make a significant difference in propeller stability and overall aircraft efficiency during flight. -
Question:
What benefits does a prop adapter provide for electric RC aircraft?
Answer: A prop adapter, such as the E-flite model, ensures a secure and stable connection between the propeller and the motor, significantly enhancing the performance of electric RC aircraft. It allows pilots to easily swap out different propellers, enabling adjustments for various flight conditions or styles, such as acrobatics or cruising. For hobbyists looking to optimize their setups, a good prop adapter is essential, as it prevents vibration and improves thrust efficiency, allowing for smoother flights and improved control over the aircraft. -
Question:
Can I use the E-flite Prop Adapter if I’ve never worked with RC aircraft before?
Answer: Absolutely! While some assembly knowledge is helpful, the E-flite Prop Adapter is designed for ease of use, making it accessible for beginners. Most instructions are straightforward, guiding you through installation without complicated tools. This is particularly beneficial for those just entering the RC hobby, aiming to learn and improve their skills. Using reliable and easy-to-install components such as this prop adapter can enhance the learning experience while promoting confidence in managing various aircraft maintenance tasks. -
Question:
Where can I buy E-flite Prop Adapter with Setscrew 4mm EFLM1931 Spinners & Hub Nuts?
Answer: You can conveniently purchase the E-flite Prop Adapter with Setscrew 4mm EFLM1931 Spinners & Hub Nuts from Ubuy in Saudi Arabia. Ubuy offers a diverse range of RC products and accessories, ensuring a smooth shopping experience. Their platform is designed to cater to both hobbyists and professionals alike, providing access to high-quality gear that meets your remote control needs. -
Question:
What is the weight of the E-flite Prop Adapter allowing me to gauge its impact on flight performance?
Answer: The E-flite Prop Adapter is designed to be lightweight, typically weighing just a few grams. This minimal weight helps ensure that it does not significantly affect the overall flight performance of your RC aircraft. A lightweight prop adapter is crucial for maintaining optimal thrust-to-weight ratio and enhancing maneuverability. For pilots focused on performance, selecting lightweight components can lead to improved flight dynamics and better responsiveness, especially in competitive scenarios.
E-flite Remote & App Controlled Vehicle Parts EFLM1931 Editorial Review
The E-flite Prop Adapter with Setscrew for 4mm spinners and hub nuts presents a mixed bag of customer experiences. For hobbyists looking for a reliable solution to connect props to their model airplanes, many users appreciate the enhanced safety that the set screw design offers. Unlike collet-type adapters, which can sometimes fail, this adapter is praised for its security, especially when handling higher power motors. Several users reported they add a second set screw and locking compound for added safety, showcasing a desire for additional stability. However, there are notable design flaws. Many customers expressed frustration with the fitting. The adapter does not sit perfectly centered on the motor shaft due to a slip fit that leads to vibration issues. The single set screw provided is often Considered subpar, with some users unable to find a properly fitting tool to tighten it adequately, which undermines its effectiveness. Furthermore, the absence of knurling on the adapter's grip surfaces raised issues regarding prop security under load, making it less suitable for higher performance aircraft. Ultimately, while the prop adapter serves well for specific applications—particularly as a direct replacement—its design limitations suggest that users with more demanding requirements might need to explore alternatives. **
Customer Reviews & Ratings
21 customers ratings
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5 Star
65%
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4 Star
24%
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3 Star
0%
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2 Star
11%
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1 Star
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Pros
- Enhanced safety compared to collet-style prop adapters.
- Good build quality and fit for the 4mm shaft.
- Straight and balanced once installed.
Cons
- Tends to become off-center due to the slip fit design, leading to vibrations.
Platform Trust & Buyer Confidence
MA
Mekki
Verified buyer
“Arrive before time, excellent products”
9 July 2026 · via Trustpilot
FS
Farrah
Verified buyer
“A very big Thank you to HUDA and the Ubuy Team in helping to send my order to me yesterday!! Order # 62606425316 Customer service and operations is top for this online shopping company and I am very satisfied with the way they handle issues. THANK YOU once again!!”
25 June 2026 · via Trustpilot
AF
Anila
Verified buyer
“Good experience of shopping through Ubuy.”
16 June 2026 · via Trustpilot
MG
Mohamed
Verified buyer
“We feel very good about the delivery time, and the materials we received matched our order.”
14-Jul-26 · via Trustpilot
E
Essam
Verified buyer
“Perfect service and fast delivery.”
16-Jul-26 · via Trustpilot
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SAR 52
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