Welcome! Becoming a registered user of ShortWingPipers.Org is free and easy! Click the "Register" link found in the upper right hand corner of this screen. It's easy and you can then join the fun posting and learning about Short Wing Pipers!

Thanks Thanks:  0
Page 1 of 3 123 LastLast
Results 1 to 10 of 25

Thread: Ordering sealed struts and some things for the annual on my PA16 Clipper

  1. #1
    JohnD's Avatar
    Join Date
    Apr 2014
    Location
    North Iceland
    Posts
    54
    Post Thanks / Like

    Default Ordering sealed struts and some things for the annual on my PA16 Clipper

    Hi, I want to order sealed lift struts for my Clipper and was wondering if it is just Univair who sells them or if I should be looking somewhere else.
    Should I be ordering some other items as well for replacing the struts?

    Regarding the annual I am going to order some CO detectors, spark plugs (think I will order REM40E for the 235 c1) and air filter.

    I am open to ideas on what to add to this short shopping list since I will be shipping it overseas.

  2. #2

    Join Date
    Mar 2016
    Location
    Merritt Island, FL
    Posts
    779
    Post Thanks / Like

    Default Re: Ordering sealed struts and some things for the annual on my PA16 Clipper

    You might add an O-320 Lycoming to the list.

    Oh, and I got my sealed struts from Airframes Alaska with all new stainless steel forks and AN attachment bolts. https://www.airframesalaska.com/PA-2...uts-s/1896.htm

  3. #3

    Join Date
    Mar 2017
    Location
    Frederick MD
    Posts
    1,216
    Post Thanks / Like

    Default Re: Ordering sealed struts and some things for the annual on my PA16 Clipper

    Lower bolts are not AN bolts!


    Sent from my iPhone using Tapatalk

  4. #4

    Join Date
    Mar 2016
    Location
    Merritt Island, FL
    Posts
    779
    Post Thanks / Like

    Default Re: Ordering sealed struts and some things for the annual on my PA16 Clipper

    Quote Originally Posted by dgapilot View Post
    Lower bolts are not AN bolts!


    Sent from my iPhone using Tapatalk
    Really? What are they?

  5. #5

    Join Date
    Mar 2017
    Location
    Frederick MD
    Posts
    1,216
    Post Thanks / Like

    Default Re: Ordering sealed struts and some things for the annual on my PA16 Clipper

    Upper bolts are AN, lower bolts and nuts are Piper part numbers.

    https://www.univair.com/piper/piper-...SABEgKAefD_BwE


    Sent from my iPad using Tapatalk

  6. #6
    walt.buskey's Avatar
    Join Date
    Apr 2012
    Location
    Etna, NH
    Posts
    858
    Post Thanks / Like

    Default Re: Ordering sealed struts and some things for the annual on my PA16 Clipper

    Ditto on the lower bolts. Use Piper parts; they're a bit shorter. I also got my struts from Airframes AK -- they can also powder-coat them so you don't have to deal with painting.

  7. #7

    Join Date
    May 2016
    Location
    CGX
    Posts
    397
    Post Thanks / Like

    Default Re: Ordering sealed struts and some things for the annual on my PA16 Clipper

    Quote Originally Posted by Subsonic View Post
    Really? What are they?
    I don't see how the stronger 464p6 bolt could ever interfere, the only way it could on my Clipper is if I broke the gear off, we swapped out the stronger bolts for the weaker ones though. Placed next to each other the NAS464p6 bolt is about 1/8 inch longer, the thread lengths are same, the grip non threaded section of shank on the NAS bolt is 11/16 and on the Univair bolt is 9/16. Installed it's hard to tell the difference, the new Univair bolt is only 1/16 inch shorter on the underside of fork.

    From a thread in 2018 https://www.shortwingpipers.org/foru...ut-Attach-bolt

    Quote Originally Posted by PA-16 View Post
    There is a Piper service bullit 1172 strut bolt hardware, attatched figure below. If you have the NAS464P6-11 bolts you are good for 500 hours. My plane had them installed with new sealed struts 15 years ago and am almost to the 500 hour limit so I ordered the new univair bolts, they are exactly the same size as the NAS464P6-11 bolts. NAS464 sheer bolt is rated to 160,000 psi tensile strength which is more than the Univair bolts 125,000 psi. Strange to swap out a stronger bolt for a weaker bolt.


    Last edited by PA-16; 03-14-2021 at 06:51 AM.

  8. #8
    ysifly2's Avatar
    Join Date
    Jun 2010
    Location
    Poplar Grove, IL
    Posts
    393
    Post Thanks / Like

    Default Re: Ordering sealed struts and some things for the annual on my PA16 Clipper

    Quote Originally Posted by walt.buskey View Post
    Ditto on the lower bolts. Use Piper parts; they're a bit shorter. I also got my struts from Airframes AK -- they can also powder-coat them so you don't have to deal with painting.
    I believe they are custom Piper p/n because they have a longer grip length in proportion to their overall length compared to a same length AN bolt.

    Bryan


    Sent from my iPhone using Tapatalk

  9. #9
    Administrator Steve Pierce's Avatar
    Join Date
    Nov 2007
    Location
    Graham, Texas, United States
    Posts
    13,554
    Post Thanks / Like
    Blog Entries
    1

    Default Re: Ordering sealed struts and some things for the annual on my PA16 Clipper

    I don't believe Airframes makes PA16 lift struts but I might be wrong. I would get the struts and the lower strut bolts from Univair for sure.

    Quote Originally Posted by PA-16 View Post
    I don't see how the stronger 464p6 bolt could ever interfere, the only way it could on my Clipper is if I broke the gear off, we swapped out the stronger bolts for the weaker ones though. Placed next to each other the NAS464p6 bolt is about 1/8 inch longer, the thread lengths are same, the grip non threaded section of shank on the NAS bolt is 11/16 and on the Univair bolt is 9/16. Installed it's hard to tell the difference, the new Univair bolt is only 1/16 inch shorter on the underside of fork.

    From a thread in 2018 https://www.shortwingpipers.org/foru...ut-Attach-bolt
    Easier for me to source and install the Piper bolts from Univair because I have had interference issues with the longer NAS bolts alled out in the SB. Piper put that out because they no longer make the bolts. The important thing to know is like Bran posted, the Piper bolt has a shorter threaded portion to keep threads out of the shear area of the joint between the fork and fuselage and the end of the bolt out of the landing gear top when the gear is splayed out in a hard landing. We had to install the NAS bolts upside down on a Super Cub. When it got away from the owner hand propping a dead battery and hit a chemical tote I had to lift the whole airplane up, remove the gear and the remove the struts. A major pain. Same with a Carbon Cub that Cub Crafters wallowed the strut attach fitting holes out on and they had to engineer a fix after we found it that entailed custom machined forks, NAS bolts installed upside down while the airplane is hanging from the ceiling because the gear has to be removed to get the bolts in. Then throw in your lead mechanic who is living in the apartment at your hangar stayed up covering his wings and drinking beer with his buddies and doesn't comeout till 10 am to help.
    20160418_150814.jpg

    20160418_154313.jpg

  10. #10

    Join Date
    May 2016
    Location
    CGX
    Posts
    397
    Post Thanks / Like

    Default Re: Ordering sealed struts and some things for the annual on my PA16 Clipper

    I had the NAS464P6-11 in my Clipper, not the AN bolts like those. I still have them at the hangar, I will post a picture of one, it is a sixteenth of an inch longer on the bottom, the thread length the same as the13241. I would understand the change from a long AN bolt like you show there, but not for 1/16 of an inch shorter.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •