- Product Type: Electric Propeller
- Manufacturer: E-flite
- Model Number: EFLUP052535
- Propeller Size: 5.25 x 3.5 inches
- Diameter: 5.25 inches
- Pitch: 3.5 inches
- Fitment: Standard Part
- Primary Compatibility: E-flite UMX Gee Bee R-2 510mm BNF Basic with AS3X and SAFE Select
- Secondary Compatibility: E-flite UMX Gee Bee R-2 BNF Basic with AS3X and SAFE Select
- Part Application: Spare or replacement propeller
- Power System: Electric
- Manufacturer UPC: 605482017388
Overview
The E-flite 5.25 x 3.5 Electric Propeller is a premium replacement and spare propeller specifically designed for the E-flite UMX Gee Bee R-2, one of the most popular ultra-micro electric RC aircraft available in the UK market. Whether you are an experienced RC pilot looking to maintain a spare propeller for uninterrupted flight sessions, or a beginner discovering the world of electric RC aircraft, this compact propeller is an essential accessory to keep your model flight-ready at all times. Ultra-micro RC aircraft demand precision-engineered components, and this E-flite propeller delivers exactly that performance standard.
As a standard part for the UMX Gee Bee R-2, this electric propeller is engineered to exacting specifications to ensure perfect compatibility and optimal aerodynamic performance. The 5.25 x 3.5 inch dimensions are specifically calculated to deliver the right balance of thrust and efficiency for the Gee Bee R-2's lightweight airframe and electric motor system. If you fly RC aircraft regularly in the UK or participate in RC flying clubs, having spare propellers on hand is essential — propellers can be damaged by hard landings, impacts with objects, or simply normal wear and tear from regular flight operations. This makes the E-flite 5.25 x 3.5 propeller a cost-effective investment in keeping your UMX Gee Bee R-2 operational throughout the flying season.
RC Model Shop stocks genuine E-flite components as an authorised UK retailer, ensuring you receive authentic, high-quality parts that meet E-flite's rigorous manufacturing standards. Whether you are building your first ultra-micro RC aircraft or maintaining an existing fleet, this replacement propeller is the correct choice for UMX Gee Bee R-2 owners throughout the United Kingdom.
Key Features
- Exact Compatibility with UMX Gee Bee R-2 — This propeller is a standard part for the E-flite UMX Gee Bee R-2 aircraft, meaning it is engineered to fit perfectly and perform optimally on this specific model, eliminating guesswork and ensuring reliable performance every time you fly.
- Compact 5.25 x 3.5 Inch Dimensions — The precision-engineered size delivers the ideal thrust-to-weight ratio for ultra-micro electric RC aircraft, balancing responsiveness with efficiency during flight operations.
- Electric Motor Compatibility — Designed specifically for electric power systems, this propeller works seamlessly with the motor and ESC (electronic speed controller) system integrated into the UMX Gee Bee R-2, ensuring smooth acceleration and controlled flight characteristics.
- Spare and Replacement Option — Having multiple propellers available means you can continue flying even if one propeller sustains damage, making this an essential accessory for regular RC pilots who want to maximise their flying time without delays.
- Genuine E-flite Manufacturing — E-flite is a recognised leader in ultra-micro and micro RC aircraft design and manufacturing, so you can trust the quality and durability of this propeller component.
Technical Performance
The E-flite 5.25 x 3.5 Electric Propeller represents precision engineering optimised for ultra-micro electric RC aircraft. Propeller selection is critical in RC flight because it directly affects aircraft performance, battery consumption, motor efficiency and overall flight characteristics. The 5.25 x 3.5 inch specification — measuring 5.25 inches in diameter and featuring a 3.5 inch pitch — is calculated by E-flite engineers to deliver optimal performance on the UMX Gee Bee R-2's electric motor system. The diameter determines the theoretical maximum distance the propeller travels forward during one complete rotation, whilst the pitch defines the blade angle, affecting both thrust generation and motor load. For ultra-micro aircraft like the Gee Bee R-2, which typically operates on small-capacity lithium polymer (LiPo) batteries, propeller efficiency is paramount because inefficient propeller designs waste battery energy and dramatically reduce flight time. E-flite's engineering ensures this propeller maximises the energy delivered by your battery pack, keeping your aircraft airborne longer. The propeller is manufactured to exacting tolerances to ensure perfectly balanced rotation, which eliminates vibration and allows the aircraft to fly smoothly without handling issues. Ultra-micro RC aircraft are more sensitive to component imbalance than larger models because they weigh so little, so this precision manufacturing is particularly important. Whether you are flying indoors in controlled spaces or outdoors in UK weather conditions, this propeller delivers consistent, reliable performance flight after flight.
What's in the Box
- E-flite 5.25 x 3.5 Electric Propeller for UMX Gee Bee R-2
Frequently Asked Questions
- Is the E-flite 5.25 x 3.5 propeller compatible with other E-flite aircraft? — This propeller is engineered specifically as a standard part for the E-flite UMX Gee Bee R-2 aircraft. Whilst E-flite manufactures many ultra-micro and micro aircraft models, propellers are precision-matched to specific aircraft designs. Using an incorrect propeller size on a different model can result in poor performance, excessive motor strain or potential safety issues. Always verify that a replacement propeller matches your specific aircraft model before installation.
- Why would I need a spare propeller for my RC aircraft? — RC propellers are consumable components that can sustain damage from hard landings, crashes, contact with obstacles during flight, or simply normal wear and tear. Having spare propellers ensures you can continue flying without delays if your primary propeller becomes damaged or bent. For UK RC pilots who fly regularly at clubs or outdoor sites, carrying spare propellers is standard practice and allows you to maximise your flying time during each session.
- What is the difference between propeller size numbers like 5.25 x 3.5? — In propeller specification, the first number (5.25) indicates the diameter in inches — the distance across the propeller's swept circle. The second number (3.5) is the pitch in inches, which represents how far forward the propeller moves during one complete rotation in still air. These dimensions are carefully engineered for specific aircraft and motor combinations. Using incorrect sizes results in poor performance.
- How do I know if my propeller is damaged and needs replacement? — Inspect your propeller before each flight session. Look for visible cracks, chips, splits or deformation in the blades. Even small damage affects aerodynamic performance and can cause vibration or unbalanced flight. A propeller that appears bent or twisted should be replaced immediately. If your aircraft vibrates excessively during flight or flies differently than normal, propeller damage or imbalance may be the cause, and you should inspect and potentially replace it.
- Is this propeller suitable for beginners? — Yes, this propeller is suitable for pilots of all experience levels. The E-flite UMX Gee Bee R-2 is itself a beginner-friendly ultra-micro aircraft, and this propeller is simply the correct replacement component for that model. Beginners should follow E-flite's assembly and installation instructions carefully to ensure proper propeller installation.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the EFL 5.25 x 3.5 Electric Propeller: UMX Gee Bee R2 E-EFLUP052535 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
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