We have recently acquired the agency for the following affordably brilliant propellers.   At E-PROPS, we do not propose a "universal blade" which can be used for all engines and all aircraft, when cutted more or less, but blades with different chords, diameters and profiles, manufactured in different specific molds, in order to provide real customised propellers. Today we propose more than 185 blades geometries. That's why E-PROPS propellers are exactly adapted to their aircraft and engines.   Please Note: We promote Micro Aviation products and we encourage our membership to do the same. As an incentive, we manage two way referral rewards. The concept is simple, we negotiate rewards, on behalf of our members, with Micro Aviation and we host the online award and redemption of reward vouchers.  There are terms and conditions attached to each reward. All rewards are subject to the presentation at the point of first contact; later presentation is voidable by Micro Aviation.

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Propellers of 3rd generation	- ultra-light : the E-PROPS are the WORLD's lightest propellers - extremely strong : 100% carbon braid   - exceptional performances. The secret ? Blades with thin chords (width of the blades) + specific profiles + innovative patented designs = reduction of the blades drag = optimal efficiency = significant gain of thrust with reduction of the fuel consumption
E-Props geometries	Today : 185 different blades geometries High CL profiles by Hélices E-Props (software LmPTR) Adapted diameter and blades' numbers Adapted chord for maximum ESR effect Specific models to reduce noise, as on EXCALIBUR-6
Blades	100% carbon + epoxy resin Optimum use of carbon fibers to obtain light and strong blades Foam core with D-Box RTM manufacturing process High UV protection additive HCF (Helical Continuous Fibers) process, specifically designed by E-PROPS : ensures an exceptional strength of the blade => see manufacturing
Blade's foot	Carbon fiber rolled up on a titanium ring No risk of galvanic corrosion because no metal part Exceptional strength (calculated and verified) => see manufacturing
Hub	100% carbon + epoxy resin high T° (120°C) Ground adjustable pitch Compact hub for minimum drag and to optimize engine's cooling Optimum tightening anti vibrations Nord-Lock screws => see manufacturing Hubs drawings to adapt the spinners
Leading edge protection	Strong leading edge protection in Nanostrength® resin 2 years Impact Garantee =>see leading edge protection
Moment of Inertia	Moment of Inertia calculed then verified Strict respect of the engines limitations => see moment of inertia
Balancing	Blades and hubs balancing at each manufacturing step Propellers balanced with an electronic bench =>see balancing
Tracability / blade's remplacement	RFID chip inserted in each blade and each hub's part, with all technical data inside. Unique serial number on each blade Strict quality control; quick replacement of one blade possible => see manufacturing To know if a blade can be repaired or not, please send pictures of the damages and indicate the serial number (4 or 4 numbers). Please note : the serial numbers do not necessarily follow each other. Those serial numbers are assigned at the beginning of the manufacturing process (for the best tracability), and at the end the propellers are balanced with different blades and hubs series. Il is normal to have different serial numbers on the blades and on the hub of the same propeller.
Pitch adjustment	Ground adjustable pitch propellers Simple adjustment with a precise digital protractor =>see pitch adjustment
Life limitation - TBO	no life limitation recommended major periodic inspection (MTBO) : 2.000 hrs => see tests Visual inspection of the propeller + check of the pitch + check of the screws tightening => - every 50 flight hours and/or every 3 months on WARM engine - EXCALIBUR-6 models : every 25 flight hours and/or  every 3 months on WARM engine
Periodic checks	Tightening of the propeller on the engine is essential and has to be done regularly. Visual inspection of the propeller + check of the pitch + check of the screws tightening => - every 50 flight hours   and/or   every 3 months, on a WARM engine - EXCALIBUR-6 models : every 25 flight hours   and/or   every 3 months on WARM engine => why such recommendations ? See explanations on : hubs / screws / drillings
Mechanical Strength / Tests	Centrifugal load : break at 11.000 tonnes, safety coefficient : 7,2 Carbon propeller can hold 6 times the maximal load during 1 hour without any damages Stress the blade with alternating bending during 2.000 hours at 10 times the worse case of functioning => see tests
Certification	Propellers designed, made and tested to meet the requirements aeronautical standards (AESA CS-P) Certified following the LSA standards (ASTM F2506-13) => see certification
Accessories	Delivered with the propeller : - Flange (black anodized) - Complete screw kit with Nord-Lock washers - On Rotax 912 / 912S / 914 / 915 engines : Rotax drive lugs - Digital Protractor to adjust the blades pitch - Extended hubs, remplace the aluminium spacers, if necessary (for the moment, only on 3-blades tractor models) - DURANDAL / ALMACIA models : blades covers in grey cordura   In option : - Carbon Spinners or Mini-Spinners : many diameters
Garantee	Garantee "TEST YOUR PROPELLER DURING 6 MONTHS" If you are not totally satisfied, you can send the propeller back and E-PROPS reimburse you. E-PROPS is the only manufacturer in the world to propose this garantee To propose this garantee, the E-PROPS team is confident of the performances and quality of its propellers !

 

WHY CHANGE PROPELLER ?

 

 

4 minutes to ask the good questions

 

Propeller is not an accessory

It is an essential equipment, indispensable, exactly as the aircraft structure and as the engine. A light aircraft or an ultralight cannot take-off or cruise without propeller.

 

The propeller is a critical equipment :

• If its efficiency is bad, this will affect the performances and the fuel comsumption of the aircraft
• If it has not been well designed and calculated, if it is bad manufactured or it has too many parts, the risks could be significant (loss of the pitch, loss of a blade, even loss of the propeller)
• If it is bad balanced, this could cause vibrations. Vibrations could be dangereous for other parts of the aircraft (reducer, engine mount, silent-blocks)
• If the propeller is fragile, or if it could damage over time, the repairs could grounded the aircraft
• If it is noisy, this could degrade the confort for the pilot and his passenger, and also the relationship with the neighbours
• If the propeller is heavy, this will affect the mass of the aircraft, and could weigh above the limits on the reducer.

 

 

 

Those characteristics are essential to obtain the perfect propeller that doesn't get noticed.

Furthermore, the propeller must be nice, because "a beautiful plane is a plane which flies well".

 

 

 

 

 

 

But all propellers do not meet those specifications. Why ?

Some explanations :

 

 

 

And regarding the efficiency... Which manufacturer tests then publishes comparative technical data of its propellers ? In order to have the best performances of a propeller, each blade has to be especially developed for one engine, one gear box, one diameter, a speed range of the aircraft and a defined configuration. The propeller is necessarily a custom-made product. However, most of propellers manufacturers have only some blades designs in their catalogs.

 

 

 

 

 

 

 

 

 

Ask yourself question :

Do my present propeller, the one which allows my ultralight to take-off, climb and cruise, meets those essential specifications ?

Is it efficient, light, simple, well-designed, silent, well-manufactured, strong, esthetic and well-balanced ?

 

 

Congratulations, you have the perfect propeller, well-adapted to your needs and which allows to fly safety in your aircraft

 

It is time to change !

Your safety is first threatened, and also your comfort, and in the long term your budget.

Bad performances, fuel overconsumption and vibrations are not fate !

 

 

Objections :

 

You have no time to change your propeller ?

Choose a simple propeller, with a good manual; so you just need 2 hours for assembly and pitch adjustment.

 

You don't have the budget for a new propeller ?

An efficient, new, solid and safe propeller, costs less than 2% of the total price of a new ultralight, and less than 5% of the amount of a second-hand mid-range ultralight.

Sometimes you have to make some choices : a good propeller is essential, some accessories not.

 

The aircraft manufacturer has chosen my propeller : that's the best choice for my aircraft.

 

Yes - and no ! An aircraft manufacturer has not always the time and the possibility to test all propellers on the market. This model is perhaps the one which he has made all certification tests (and he doesn't want to make them again - we can understand !), or the one on which he has the best margin... The manufacturer choice is not always the best technical choice, because we are not in a perfect world.

 

You don't know what propeller you should choose ?

All propellers manufacturers are saying the same thing : their propellers are the best, the stronger, the more silent. Of course. Same by E-PROPS ! Perhaps you have to favour a propeller manufacturer who will give proofs, and be sure that you can give the propeller back and be reimbursed if this model does not suit you...

 

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