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  1. G

    Lifting body discussion

    Yes... Main gear shock absorber from Ducati Monstro, but will have to modify spring strengthness to sustain load, and front shock absorber from small motorcycle. Hydraulic brakes on main, too. Cheap, mass produced, so easy to find. For the brakes, I also adapted the hand command cylinders to the...
  2. G

    Lifting body discussion

    Well, actually no need, the shape of central section, YZ cutwise, is strong enough to sustain wing efforts, as calculated (X is from front to rear, Y is from tip to tip, Z is front bottom to top axis) Regards. GTex09 ;)
  3. G

    Lifting body discussion

    You can open the cockpit to enter by moving the top backwards. ;)
  4. G

    Lifting body discussion

    And one with cockpit open....;)
  5. G

    Lifting body discussion

    Hi Cheapracer Of course... Please find attached some other views from cockpit, from engine, rearside without elevons, and also the central part without wings. It is not yet finished, at prototype stage, with rough surfaces ! :) GTex09
  6. G

    Lifting body discussion

    Hello everyone, So longtime without giving some news...Sorry for that. The project is still alive, please find some pictures attached. I plan to make some engine static trials before end of the year. I'll keep you posted. GTex09 :)
  7. G

    Lifting body discussion

    We'll see... If weather, finances, time are OK, I hope being able to run part 3 by next spring or summer... I steel need to buy the gear between engine and propeller, need also to mount the engine (the BMW motorcycle is already bought, but I've to adapt the engine to my wing, with frame, and all...
  8. G

    Lifting body discussion

    Hi Captarmour, Yes, steerable, it will be easier to steer the machine. For stability reasons I applied the angle like on bicycle forks (21°) and the positionning of the steering column axis behind the wheel axis, intersecting the wheel radius at around 0.25xR, as I already tested in my GTx9-09...
  9. G

    Lifting body discussion

    Hi 'cheapracer' Well, actually, what I did is... look around me, with my friends (motos) what kind of stuff I could use to make it cheap ! What is a main gear, hydraulic, for a plane ? If you check for the load, you can adapt the spring of a bike fork, like the Ducati Monstro (Showa), which is...
  10. G

    Lifting body discussion

    Hereby some more pictures during prototyping... Actually the tricycle gear is retractable, but I will not activate from the very beginning of trials, to not add to much critical things. :)
  11. G

    Lifting body discussion

    Hi, Weather is nice today...it's time to take some sun. Some news of the scale1:1 GTx9-11-C. Next step is related to the short wings assembly. Keep posted. Rgds
  12. G

    Lifting body discussion

    Thank you for your encouraging comments, Captarmour. Of course as soon as I can I will post more pictures of my scale 1:1 (GTx9-11-C). Rgds gtex09
  13. G

    Lifting body discussion

    Hello... Just one picture to update the status of my project, on going building phase. Regards. GTex09
  14. G

    Lifting body discussion

    Dear Bart, Perhaps also to give you some more details, please find attached the wing sections at various span positions. Cheers. Gtex09
  15. G

    Lifting body discussion

    Dear Bart, Well, what I can tell you, is that every thing comes from NASA and NACA notes available on internet. A lot of stuff to read ! Basically, I worked on the concept of a low aspect ratio shape. When you combine this to the flying wing studies from Horten, you understand that you get a...
  16. G

    Lifting body discussion

    Hi Bart, What I'm doing is prepare a new version with all the previous improvements done on this concept from the beginning. This new model will fly soon, I hope to validate all my design. Actually on top I prototyped a retractable gear which I would like to be activated by cables, in the real...
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    Lifting body discussion

    Hi DanF Thanks a lot for your encouraging comments. I'm on the way building scale 1:1 ultralight, and in parallel I'm also building the same with scale 0.4 (2/5th)... I want to check again with the small improvements done on version GTx9-07, basically on MAC profile as well as on the elevons...
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    Slow delta wings?

    Hi BDD, Well, I guess that was because I made too much changes in the plan shape between the 05 and 06 version.... Actually, if you look in detail to v06, you will see that the wing size is really much more smaller than the v05, for te same length of airplane. It was much more sensible to the...
  19. G

    Slow delta wings?

    Yes, you 're right, but it's just a pitty that we are not allowed to use it in an ultralight class airplane....:ermm:
  20. G

    Slow delta wings?

    Hi Dan, So far I just know the BMW R-1200-RT which gives you an excellent power/weight ratio. This newest version gives 110hp at 7750rpm, and when adapted to an aircraft, the weight should be under 80kg, but the previous versions, which are accepted in Europe on ultralights, are very close to...
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