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  1. R

    Sandlin Gliders: Builds, mods, flights

    I got a 404 error when I tried it.
  2. R

    Ultralight Float Plane Concept

    Is there any limit to the number of floats per 103? Normally it would be two, or possibly just one, but what about adding a third float for a 90 lb (3 x 30 lb) weight allowance? Could the third be located under the tail, or must it be with the other two?
  3. R

    Weld HDPE?

    This is a generic video of the process. The equipment used depends on what material you are fusing, the type of structure and size, and type of joint you plan to make.
  4. R

    Weld HDPE?

    In the industry I work in, my company is writing the HDPE fusion standards for adoption by the PE Alliance and the plastics industry. A properly heated and cooled joint when joined under controlled pressure will be stronger than the individual pieces of HDPE it started out as. We generally work...
  5. R

    Does airfoil selection really matter that much? (Part 103 aircraft)

    Only talking about a clean airframe constrained by Part 103 here, but as I understand it, too much motor and not enough prop leads to less than acceptable performance with either prop, engine, or both overspeeding. As well as feeling like going through deep mud with the wheels spinning wildly up...
  6. R

    Does airfoil selection really matter that much? (Part 103 aircraft)

    Instead of governing speed with a flat prop pitch, why not try a raspberry pi board with an AOA sensor or vertical speed sensor coupled to a solenoid on the throttle arm? Use a simple program to actuate the solenoid as a throttle stop when AOA is between say +2° & -2° and adjust it to limit...
  7. R

    Anyone building Airdrome Aeroplanes Morane-Saulnier Type LA (75% Scale)

    That's what held me up from building that one. I haven't been light enough to commit aviation in one for over 20 years.
  8. R

    Anyone building Airdrome Aeroplanes Morane-Saulnier Type LA (75% Scale)

    No, the AA Eindecker is not true scale, but close enough (if you squint). The overall length, wingspan and chord are roughly 3/4 scale, but the nose is long and the tail is short along with larger tail surfaces. The narrow fuselage was also massaged to fit a full-sized pilot. I think it would...
  9. R

    Would you buy a $13,700 Chinese Aerolite 103 Clone (Ready-to-fly)?

    China has allowed private aviation for the past few years, albeit heavily restricted. The Chinese can make quality products. If you are a business spec'ing parts or assemblies from them they will ask you what level of quality you want to buy, the Chinese don't usually put in more quality that...
  10. R

    BlackFly Electric Ultralight

    I would buy one, but the Minister of Finance over at my castle says NO. Maybe a competitor can bring the prices down.
  11. R

    The lack of portability ( hi hangar costs ) killed ULs imop

    I wouldn't disagree. But hangar space is dear for aircraft in general in my area. A friend of mine is building in his basement and doesn't have a clue where he will be able to find hangar space as he nears completion. My father offered to sell me his Peitenpol that is ready to cover and install...
  12. R

    Strengthening & Saving EAA Chapters and Investing in the Future: Making the Case

    I had contemplated returning to edit that to read "aviation as we know it". No, manned flight will not be disappearing any time soon.
  13. R

    Strengthening & Saving EAA Chapters and Investing in the Future: Making the Case

    Warning, long winded post ahead! Some background- I am not a member of the EAA/AOPA/FAA, etc. although I was in the EAA with my dad when I was a teen. I grew up in and around aviation my whole life, my father scrimped and saved for his dream to get his PPL and build his own airplane. I went to...
  14. R

    Graham Lee or Airdrome Aiplanes plans

    Yahoo groups used to host a lot of build content from homebuilders, but since Yahoo closed the group boards down most all of that knowledge and information has been lost.
  15. R

    Can wonder woman have her plane now?

    The Germans covered three E.III aircraft in transparent acetate/Cellon in an effort to be invisible in the air. It actually worked well at certain distances, and in limited conditions. It was also very visible on overcast days, and the sun glare back at the pilot on sunny days was horrible. It...
  16. R

    Wanna build a 110 year old airplane?

    It may not be a Curtis or Bleriot, but how about building a very early tapered-wing Morane Saulnier with a Verner radial? Or maybe one of the more familiar pre-war Morane Saulnier G/H models or its derivatives? They were built under license by several countries, like Russia and Germany, and...
  17. R

    Mooney appears to be in big trouble

    This isn't the first time extended furloughs have happened. My dad worked there in the 80's when they would pump out an aircraft a week. I remember a couple of those dark times too.
  18. R

    Broad new UAS rules proposed today

    0.55lbs or less is currently exempted. That is generally in the sub-micro category and less of a threat to full-size aircraft than the toy-grade models available from Walmart, et al. I have one as a curiosity, but prefer the giant-scale end of the hobby. It would mean the creation of a...
  19. R

    Broad new UAS rules proposed today

    I see that they intend to maintain the .55 lb exemption already in place. At least that part keeps it from being a total downer.
  20. R

    Part 103 and electric flight

    That's what I was thinking too. Especially as the AC mentions that this is a "Performance" limitation instead of a "Speed Limit". I think using an electric limiter in an electric motor/controller is a good way to maximize performance without having to juggle de-rating (and proving it) an IC...
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