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  1. PacerPlus

    Airstrip advice

    § 91.119 Minimum safe altitudes: General. Except when necessary for takeoff or landing, no person may operate an aircraft below the following altitudes: (a) Anywhere. An altitude allowing, if a power unit fails, an emergency landing without undue hazard to persons or property on the surface...
  2. PacerPlus

    Airstrip advice

    I would check local and state "policies" first. Get that out of the way and the feds wont be a problem. Move on it fast and be established before it sells. The 500 foot rules applies ...... except during take off and landing.
  3. PacerPlus

    Anglin J3 Kitten to Hipps J3 Kitten design changes?

    You are correct and after a little more thought................ It has been over 40 years............ That's the way they were done at Anglin's originally. The saw cut was slightly narrower than the ply and made it hard to get the shear ply in and sometimes cracked the caps. The fix was to...
  4. PacerPlus

    Anglin J3 Kitten to Hipps J3 Kitten design changes?

    Anglin used a V cut in the spar caps and you had to taper the top and bottom edges of the spar shear web to match. It was agrivating to assemble accurately. What we did later is to make the cap in 2 pieces. One had the thickness of the shear web routed out (about 1/8") and the other piece did...
  5. PacerPlus

    Gross weight increases for 'stretched' aircraft

    I would like to see how he did that! ..... with the stick in front of the rear seat and elevator bellcrank behind it. I'm rebuilding 2 PA12 fuselages at the moment and to me would be quite difficult unless you raised the flooring above .............. guess it could be done. The fuselage...
  6. PacerPlus

    Anglin J3 Kitten to Hipps J3 Kitten design changes?

    Just to clear up a minor detail ................... The Kitten was a spin off of the J3 Pup after Anglin and Counts split up. Anglin eventually went bankrupt. Hipps were not "airplane people" but bought the rights along with what was left of materials and fixtures at auction. My dad was there...
  7. PacerPlus

    Gross weight increases for 'stretched' aircraft

    These are a "typical" set of reinforcements for the Piper type spars. They vary in dimensions for the different applications, some for short wings some long. ALL must address the twisting of the spars from ailerons being moved outboard. Most get heavier struts. And who is extruding 2024 spars??
  8. PacerPlus

    Gross weight increases for 'stretched' aircraft

    I don't disagree with you at all except that as far as the "stretched Pacers" go, the engineering has already been done ........... well, on most anyway. If you are gonna build one from scratch/experimental, just "copy" one that has all the credentials. They have been built in one form of...
  9. PacerPlus

    Gross weight increases for 'stretched' aircraft

    But......... It's basically the same overall "dimensions" as the 12 or 14 which is the whole idea anyways and gives it similar handling characteristics ....... kinda hard to get cargo of any size in a PA12 or 14! The fuselage structure doesn't lend itself to any kind of modification for "big...
  10. PacerPlus

    Gross weight increases for 'stretched' aircraft

    Hmmmmm, I see I never responded to you ........... I don't get on here much. The Canadian one was a one off, 375 HP, fire breathing stretch called the Bullet. Most everything on it was oversized and beefed up. Stretching a Pacer, Tri Pacer or short wing is nothing more than putting it back to...
  11. PacerPlus

    U/L airfoil selection

    The Goettingen 387 was the widely used section 40 years ago.................
  12. PacerPlus

    OSH Cut Laser Cutting

    It depends on how the finished part is used as to the the use of a laser on 4130. If the part is going to be formed and welded there isn't much consideration. BUT if you are going to open up cut holes with a drill or reamer you may have a problem the the very thin "heat treated" area and the...
  13. PacerPlus

    Broken drag wire

    FWIW .....If you use an "on size" wire you can only "cut" threads with a die....... or lathe maybe. If you "roll" the threads, which is most desired, you would need to use a smaller wire size. (unless you were to machine off the ends to roll thread diameter, not desirable) The "smaller" sized...
  14. PacerPlus

    Broken drag wire

    I roll em if you need them, stainless https://www.southernaero.net
  15. PacerPlus

    Slotted flap deployment forces

    You can download it for free here .................... https://aeroknowledge77.files.wordpress.com/2011/09/58986488-theory-of-wing-sections-including-a-summary-of-airfoil-data.pdf
  16. PacerPlus

    Manufacture aircraft kit parts as a retirement side hustle.

    What are your capabilities?
  17. PacerPlus

    Aileron Design - What works and why?

    If my memory serves me correctly the "magic number", as we called it, was 135KTS ............. accelerate to 135 before climb out was always a tense few seconds. ..........................but that was over 40 years ago................
  18. PacerPlus

    Aileron Design - What works and why?

    Actually the spoilers, or "interceptors" were not added, they were part of the design of the advertised C-STOL or "Controlled STOL" feature of the Helio. The interceptors don't just "pop out". They are directly linked to the ailerons in a rotating drum like configuration and progressively come...
  19. PacerPlus

    Gross weight increases for 'stretched' aircraft

    If you research a little, this has been done a lot to mostly Pipers since the 50's .......... both STC'd and experimentals. The gross on the stock 160HP PA22 is 2000#. The "Bushmaster" stretched version can gross to 2400# with the spar reinforcements it has. I have built struts for a version in...
  20. PacerPlus

    Slats, how they work

    The automatic slat is shaped and positioned so it opens at a certain AOA ........... which is dictated by wing loading and speed as the stagnation point moves lower on the section.
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