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  1. L

    Wing/fuselage covers for summer

    Wondering if anyone has experience with leaving fabric plane out in the summer with wing/fusleage covers?( hangar in winter) Feels like this is helpful, but still will degrade some of the fabric rapidly as not everything can be covered. Any experience would be appreciated.
  2. L

    Film over fabric

    working link: http://www.ultralightsails.com/EN-US/profilam.html Dacron with ripstop Appears to be used on lots of planes as they sell precut envelopes for lots of models. Has anyone used this company??
  3. L

    Film over fabric

    http://www.ultralightsails.com/EN-US/profilam. Great find, will email company
  4. L

    Film over fabric

    Thank you
  5. L

    Airplane Wanted Pioneer II D sailplane plans

    Jim is no longer selling Pioneer II plans. Wondering if someone has set from the past. Thanks
  6. L

    Film over fabric

    Thanks for input, Oratex it is
  7. L

    Film over fabric

    Have used windsurfing and traditional sails that were laminated with something like Tedlar or Mylar in the past. I wonder if after getting Dacron tight on wings, why a white Tedlar film could not be bonded over the top of the Dacron. UV protection, slick finish, no painting, no sanding , easy to...
  8. L

    Hipec manual( old) pdf may help someone

    Found older Hipec manual online, may help those with questions about Hipec system.
  9. L

    B&S 49-series (810cm3/49ci) for aircraft use - TiPi's Q&A thread

    Kohler has an EFI series with a diagnostic app Kohler app is on Google play, displays temps, battery, RPM and so on.
  10. L

    Revisting thicker skins for laminar flow

    Yes, very helpful, the consensus is composites are superior( and true for the most part), but factory composite sailplane planes rarely meet the standard for laminar flow without some work. These factories have years of experience and struggle with this standard. What factual data can be found...
  11. L

    Revisting thicker skins for laminar flow

    Thanks for all of the input, very helpful.
  12. L

    Revisting thicker skins for laminar flow

    .004 "waviness" over 2 inches was the gold standard in the flight tests. .006 appears to be a common number for fiberglass planes. A few were in the .004 range, but almost all regardless of construction method needed work to achieve .004.
  13. L

    Revisting thicker skins for laminar flow

    Understanding laminar flow is not the issue, getting it is the issue. What I was looking for was the best-documented method for getting close to laminar flow if aluminum was used. Aside from snide opinions, the best data I could find was from Dick Johnson's sailplane tests. He always noted the...
  14. L

    Direct Drive Honda/B&S limits

    Spinner diameter is already 17 inches. Had not considered flipping the engine. Lots of good points to consider.
  15. L

    Direct Drive Honda/B&S limits

    Thank you for the offer, just emailed Ace to try and get one made to keep the engine centered due the low shaft position.
  16. L

    Direct Drive Honda/B&S limits

    Excellent point as I would prefer direct drive, but redrive may allow a larger prop with a little less risk. Redrive also allow engine position to be more centered.
  17. L

    Direct Drive Honda/B&S limits

    Armilite was right, redrive is needed even with the lightest props. MOI for the flywheel was almost identical to the tiny and lightweight props on the FES system. So even the smallest props are likely too much for the engines "as is".
  18. L

    Revisting thicker skins for laminar flow

    Is it fair to say: A preformed aluminum wing skin greater than .05 thickness with an underlying structure that keeps the wing from deforming under load is the preferred approach to this issue?
  19. L

    Revisting thicker skins for laminar flow

    Familiar with HP-18, but not the SX-300, will check it out. Any other examples or methods?
  20. L

    Revisting thicker skins for laminar flow

    Found an older post on this subject, hence the subject line Question: Are laminar flow wings/fuselage always impossible with aluminum construction regardless of construction methods? Does no construction method exist to solve this issue? Prebent/molded thicker wing skins, aluminum over foam or...
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