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  1. Exian

    What do you think about "e-soaring"?

    Also Peszke is finally commercializing the folding propellers that they developped for the GP gliders. 1,0 to 1,2 meters in diameter, 2 or 3 blades. https://www.peszke.com/offer/category/f-line-propellers
  2. Exian

    Can't find any specific tractor configuration propellers for various motors...

    I can confirm that the paramotor blades made by e-prop also work on tractor airplanes, I tested some of them on my ultralight that has a 30hp wankel motor. I am talking only about the ground adjustable pitch ones (hub in densified wood!) These e-prop blades for paramotor have just a forward...
  3. Exian

    Aixro XP40 engine ?

    This bearing température sensor is your typical K type thermocouple. Any gauge that can read that is ok. Because i didn't have much room on my instrument panel, i use a single instrument for all engine and fuel data : - egt - water temp - air temp (near Electronic ignition box) - voltage -...
  4. Exian

    Aixro XP40 engine ?

    No thermostat in the water circuit. For the parts of the engine that are cooled by the water, the supplied radiator is globaly enough, it is the same that is used on go karts, and they have less airflow than us. But we are also at higher power settings on average. A bigger radiator would help...
  5. Exian

    Aixro XP40 engine ?

    Some other points to be carefull about : - use at least 3% of oil to have enough lubrication at all time, especially when at full throttle because the main bearing does not get much of it (same reason for overheat) - the integrated electric generator produces enought voltage to recharge on...
  6. Exian

    Aixro XP40 engine ?

    Yes, cooling is an issue that i didn't manage to solve either, it is caused by the design of the engine. If you have the water radiator from Aixro and if well in the airflow, it should be ok during cruise flight. But on the ground, i have to hurry to take off before reaching 80°C at the main...
  7. Exian

    Aixro XP40 engine ?

    Hello 6774640, I am flying with this exact same engine on my first prototype : Exia. The engine has now 170h. It works great if properly set-up
  8. Exian

    What do you think about "e-soaring"?

    https://www.aerobuzz.fr/aviation-generale/le-tour-de-france-motoplaneur-solaire-sol-ex/ For non-french speakers : Basically a Silent 2 FES with flexible solar panels molded into the wing surface so that there is no drag penalty. The guy flew around France this summer in complete autonomy ...
  9. Exian

    What do you think about "e-soaring"?

    There is a variation of the nenadovich biplane called the "COLAB". This configuration was tested on a 1/2 scale Edelweiss glider. The guy also has the same Edelweiss in standard configuration (7,5 meters span). The closed wing and V tail make it quite unusual, but it seemed to fly well (I have...
  10. Exian

    What do you think about "e-soaring"?

    About balancers, is it needed to have balancing working during flight, or only during charge? If during charge only, then many chargers can deal with this, no need to have the system inside the battery. In my case I will have a 28S battery separated into 4x 7S Packs. There are high performance...
  11. Exian

    Support for Rutan Solitaire?

    Thanks for your suggestions. This project came with full set of plans, manuals and canardpusher newsletters. Only a few parts were missing. Most problematic are the springs for the landing gear : we have overall dimensions from the plans, but no indication about rigidity. One fork holding the...
  12. Exian

    Support for Rutan Solitaire?

    This is indeed to be finished as a stock Solitaire (exept motor). We are aware of the limited utility of this plane, but it is perfectly ok. My father has allready a Phoenix motorglider that has more performance in all aspects and is more practical. He was looking for something to do during...
  13. Exian

    Support for Rutan Solitaire?

    Hello! My father got his hand on an abandonned Rutan Solitaire project and intends to finish it. He just assembled the two half fuselage shells a few days ago. He plans to fit an electric propulsion in place of the two stroke engine on a pylon similar to the solution used on the GP14 and GP15...
  14. Exian

    Source for Carbon Rods?

    I am finalizing the design of the spar of my 15m glider projet, and by taking into account only strenght and manufacturing limitations (double taper of spar caps), I get a wing tip deflection of around 250 mm per G. Is that about right? Should it be less? On the topic of this thread, for the...
  15. Exian

    New glider design

    Please keep us updated with your progress/ideas on this project. By the way, I am already working on the glider that suits my answers in your study...
  16. Exian

    What do you think about "e-soaring"?

    Looking at second hand market in Germany give you an idea of real prices today. Even more expensive ! 45 200 EUR - Aeriane Swift (electric self launch) => 47 000€ for 15 years structure but electrical system new. https://www.segelflug.de/osclass/index.php?page=item&id=47989 65 000 EUR - Silent...
  17. Exian

    Exian's composite planes

    I basically followed what worked for the MC30 Luciole, using little higher values of HS and VS volume coefficient because of longer nose. I do not remember the exact values, but I recall that they were over average (HS way over average, close to 1 fo my plane...). I like and am used to...
  18. Exian

    Exian's composite planes

    HS and VS are indeed all flying type, much simplier to build and to connect to the fuselage. Some people really like the shape of these HS and VS, and some other really hate it (telling me I designed a ugly tail!). If I build a second version of my EXIA, tail will be conventionnal...
  19. Exian

    Interchangeable flying surfaces

    Not interchangeable parts on the aircraft, but some composite designs use the same tooling (molds) for several parts to reduce cost in material, and time building these toolings - For example, Silence Twister used (at least for the prototype) one set of molds for both left and right wings. This...
  20. Exian

    Exian's composite planes

    Very interesting! By RC charger, I mean your typical charger for the batteries of remote controled models planes, that use your car 12V battery as a supply source. I carry with me a big lead-acid battery to able to charge my plane in the hangar that has no suitable 220v close by... I just give...
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