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Thread: 13 rib wing?

  1. #11
    Administrator Steve Pierce's Avatar
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    Default Re: 13 rib wing?

    Quote Originally Posted by PA-16 View Post
    My PA-16 has 12 ribs, if I counted correct. Is the Pacer wing the same as the PA-16 wing with exception of having flaps and shorter ailerons? 1A4 in fact shows different Vne speeds for PA-20-115 and PA-20, the PA-20-115 wing may have fewer ribs than the PA-20 http://ohio.shortwingpiperclub.org/M...a/TCDS/1A4.pdf
    Same wing as far as I remember. Didn't change till they came out with the 150 hp. The O-235 powered Pacer might have not had the reinforced lift struts but not sure why it had a lower Vne etc.

  2. #12

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    Default Re: 13 rib wing?

    So if I remember right all PA 20's have 12 rib wings therefore all PA20's with 150 hp engines have 12 rib wings you cant put 13 rib wings on [I don't know of any stc to do so] and you definatly cant respace your 12 rib wings and put 13 in

  3. #13
    Jim Hann's Avatar
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    Default Re: 13 rib wing?

    Quote Originally Posted by PA-16 View Post
    My PA-16 has 12 ribs, if I counted correct. Is the Pacer wing the same as the PA-16 wing with exception of having flaps and shorter ailerons? 1A4 in fact shows different Vne speeds for PA-20-115 and PA-20, the PA-20-115 wing may have fewer ribs than the PA-20 http://ohio.shortwingpiperclub.org/M...a/TCDS/1A4.pdf
    The -115 I've been training the club members in has 12 ribs and no flaps. Not sure why the speeds are lower except that the gross is 1750, maybe a loophole/gap in the regs that caused the change because of the lower maximum weight. I'm just guessing here, no proof whatsoever.
    Quote Originally Posted by jay heil View Post
    So if I remember right all PA 20's have 12 rib wings therefore all PA20's with 150 hp engines have 12 rib wings you cant put 13 rib wings on [I don't know of any stc to do so] and you definatly cant respace your 12 rib wings and put 13 in
    Well, there is a PA-22 running around this board with one 12 and one 13, I've seen it in person when the previous owner had it at Oshkosh. You won't notice unless you count! Also, there is no reason to change the wings because the FAA isn't going to give you the higher speeds no matter what you do! The TCDS spells out what each airplane (by serial number) was born as and y'all know the FAA.
    1957 PA-22/20 "Super Pacer" based 1H0
    Lifetime EAA member
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    Lifetime EAA Chapter 32 member


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