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  1. B

    Using glue for aluminium to suppliment rivets. Ever done it?

    So, why not use glue to AS WELL as rivets to hold an aluminum truss together. It can only make things stronger without adding any significant weight, right? Ever done it?
    • Bsky
    • Thread
    • aluminum glue metal rivets truss
    • Replies: 3
    • Forum: Tube & Fabric
  2. B

    Allowed to design and build own LSA at home?? Yes? No?

    "When designing and building your own Experimental Amateur-Built aircraft, the FAA puts few limitation on you." Can i still fly/operate it in the same way as a 103 ultralight? Would I need a PPL or sports pilot lis?
  3. B

    Allowed to design and build own LSA at home?? Yes? No?

    If a person wants to BOTH design and build their own lsa at home, is that allowed by the Gov? The lsa I'm thinking of is basically a 40 lbs over the limit ultralight, stall around 35 to 40 mph, intended to be used in the same way as a 103, not carry any passengers, 10 gal of fuel. As i...
  4. B

    How much does a freakin' prop weigh?????????

    How much does a 36in diameter wood prop weigh for a 103 ultralight???? For the love all that is holly I cannot find the answer on google and it is really really burning my cookies. Obviously, i know "it depends" and "it varies" but come on. What do your props weigh? Is 4lbs +/- 1lbs a fair...
  5. B

    Anybody done aileron rolls or other "acrobatics" in 103 ultralights?

    To all the zombie pilots: in you former life did you try aileron rolls, "loopy loops" or a "flying ha ha" in a 103 ultralight?
  6. B

    Can FAR103 Ultralights have retractable landing gear?

    I know LSAs have to have fixed. What about 103ULs?
  7. B

    fabric wings..5.2 lbs/ft^2 ...for figuring mtow

    What can fabric wings handle? 5.2lbs * 110 ft = 570lbs for mtow....good? bad? strange?
  8. B

    Aircraft design for the SIMPLE-MINDED!

    I personally have a little BACKground in scisyhp and htam including tings like GR, QM, tensors, DEs, and bla bla bla. The figures i stuck in my OP were just for trying to make the point that what was stupid hard to do back in 1920 is relatively easy today given a broad spectrum of readily...
  9. B

    Aircraft design for the SIMPLE-MINDED!

    I scanned the web and youtube and I've noticed that a lot of the people that design and build their own 103 ULs are admittedly "not engineers". They just eyeball it, make it look like the other airplanes they see in general proportions, and employ rules of thumb,etc... Sit down, make a spec...
  10. B

    WOMEN instead of gas or electric. WHY NOT?

    It was just put to me by a member of the opposing sex that babes(i.e., females, women, girls, chicks,that which it is impossible for guys to understand) would make better airplane engines than dudes. I mentioned human powered airplanes like the MIT Daedalus and she contends that because women...
  11. B

    VAMPIRE UL, 2-strokies, 300mi RANGE! Wowzers!!!

    Vampire 103 UL has a 300 mi range with a 20hp two stroke engine, cantilever wings, and its the coolest looking UL i have ever seen. Empty 250 and gross 550. Sadler Vampire - Wikipedia, the free encyclopedia
  12. B

    Coolest Ultralight and LSA in the history of time!

    Changed my mind. The SADLER VAMPIRE is the coolest UL in the history of time. Since i doubt anyone will ever do better, I will say it is the coolest UL in eternity.
  13. B

    Sleeping in an UL during a thunderstorm. Bad idea? OK?

    I've read a few places where people, when either at an airport or in the "woods", sleep next to or IN their UL or LSA. This sounds okay, but what if it is raining or the is thunder and LIGHTENING? If your in something like a Quicksilver then i think you would be likely to get zapped. ULs and...
  14. B

    Are alerions included in the wing area?

    Ah ha! Thank you! This is exactly what i need.
  15. B

    Are alerions included in the wing area?

    I looked at specifications for various ULs on wiki and elsewhere. Typical wing areas are from 115 to 140. DOES THIS INCLUDE THE AILERONS? For example, the Hawk Arrow has ailerons the jut out from the rectangular form of the wing.
  16. B

    How much does a fuselage weigh?

    "You could start with a negative weight by making it with big tubes and then fill them up with hydrogen to take off. Then once in the air you can run your engine on the helium to move around." I thought of that a long time ago but decided not to do it because the gases might attack the the...
  17. B

    How much does a fuselage weigh?

    Working on UL plane design. Semi-cantilever wings. Span 28 ft. Height 3.5ft without landing gear. I cant seem to get the weights to work out even though i see planes line the backyard flyer and the belite that get the job done. Fuselage FRAME weight is giving me grief right now. Am I way off the...
  18. B

    Coolest Ultralight and LSA in the history of time!

    I've searched the internet thing far and wide, high and low. I have a list of the coolest ULs and LSAs that yet exist. The coolest honest 103 UL is.. 1. Titan Tornado 103 2. Areolite 3. Hawk Ultra The coolest LSA is.. 1. Icon A5 2. CZAW SportCruiser 3 A22 Foxbat The worst, most awful, most...
  19. B

    LIQUID NITROGEN instead of gas or electric. WHY NOT?

    Liquid nitrogen (kinda condensed air) has about the same energy storage capability as a lithium ion battery. It's about 100-110 wh/kg. Its energy density is not that terrible either. I have thought of using that in place of batteries for a non-combustion engine in an UL. As only the weight of...
  20. B

    COMPRESSED AIR instead of gas or electric? WHY NOT??

    Compressed air blows, that's why. 34 whr/kg and a whr/L thingy that is so darned low the Devil has to look down at it. BUT, ignoring that completely, can you put an air tank at say 2000psi in your little plane, and use the air pressure to directly turn the prop in such a way as to mimic a 15hp...
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