Page 6 of 6 FirstFirst ... 456
Results 201 to 239 of 239

Thread: Building an Experimental PA11

  1. #201

    Join Date
    May 2017
    Posts
    874
    Post Thanks / Like
    Quote Originally Posted by Dan Gervae View Post
    I have read many posts on upside down or right side up mounting of master and starter relays (solenoids) and I have a couple of additional questions...one is, can the relays be mounted sideways without performance issues? And what are everyone’s thoughts on mounting relays to the firewall (engine side)vs mounting inside? My battery is mounted inside on the firewall....don’t worry, I have a plan for my cabin heat which will route it such that it doesn’t blow right on my battery. ( work in progress).
    Attachment 54696
    Your master and starter relays should be as close to the battery as possible. The wire from the battery to the master is unprotected, and so is the wire from the master to starter relay. You want unprotected (especially high current unprotected) wires to be as short as possible, preferably with no bulkhead penetrations. The shorter they are, the less chance of insulation fraying and the wire shorting out.


    Sent from my iPad using Tapatalk
    Thanks Dan Gervae thanked for this post
    Likes jrussl, Hardtailjohn liked this post

  2. #202

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    I’ll mount my relays right above and to the right of my battery. On another note...Wayne from Southern Aero finished up my strut fittings...once they arrive with the streamlined aluminum material He’s sending with it, I can build my aluminum lift struts. He does nice work.
    Click image for larger version. 

Name:	9FE0DFDD-93A6-44CA-87C7-FDEA31997142.jpg 
Views:	44 
Size:	100.4 KB 
ID:	54714
    Likes Hardtailjohn, motosix liked this post

  3. #203

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    I have been working hard at finishing the hangar Too, I got the ceiling up, lights in, and blown in insulation done too.
    time to focus on finishing the Cub!
    Click image for larger version. 

Name:	25B583AB-4315-45CF-8FA7-BE2174D752E1.jpg 
Views:	54 
Size:	117.2 KB 
ID:	54715

  4. #204

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    Click image for larger version. 

Name:	2F7E922F-7E32-4021-893C-5D6AB1B3AA49.jpg 
Views:	38 
Size:	63.9 KB 
ID:	54769Click image for larger version. 

Name:	40A98E69-3B9A-4DB0-BA75-5A676316B6CA.jpg 
Views:	41 
Size:	59.7 KB 
ID:	54768

    getting some wiring done...should be close by the end of the week. Planning to build new aluminum lift struts this weekend.
    Last edited by Dan Gervae; 03-16-2021 at 07:28 PM.
    Likes Hardtailjohn, Crash, Jr., jrussl, motosix liked this post

  5. #205

    Join Date
    May 2014
    Posts
    132
    Post Thanks / Like
    Quote Originally Posted by Dan Gervae View Post
    I’ll mount my relays right above and to the right of my battery. On another note...Wayne from Southern Aero finished up my strut fittings...once they arrive with the streamlined aluminum material He’s sending with it, I can build my aluminum lift struts. He does nice work.
    Click image for larger version. 

Name:	9FE0DFDD-93A6-44CA-87C7-FDEA31997142.jpg 
Views:	44 
Size:	100.4 KB 
ID:	54714
    I can't wait to see how these go together for you.

  6. #206

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    Click image for larger version. 

Name:	305EF5BE-2BFD-44E4-A832-97E75756753E.jpg 
Views:	40 
Size:	59.8 KB 
ID:	54828
    Click image for larger version. 

Name:	3A3F8DC9-53AD-43FE-8FBD-CCBBE6D72C97.jpg 
Views:	30 
Size:	58.6 KB 
ID:	54829
    Click image for larger version. 

Name:	7F8B3F29-EC47-4978-87C9-2DACB0FF244C.jpg 
Views:	33 
Size:	61.9 KB 
ID:	54830
    The front struts are together..I have the rear struts drilled and have only to drill the eye bolt holes at the jury strut locations...I’m doing this instead of strut clamps.
    Likes 40m, Hardtailjohn liked this post

  7. #207
    skywagon8a's Avatar
    Join Date
    Mar 2008
    Location
    SE Mass
    Posts
    11,072
    Post Thanks / Like
    Quote Originally Posted by Dan Gervae View Post
    ....and have only to drill the eye bolt holes at the jury strut locations...I’m doing this instead of strut clamps.
    I have been made aware recently of an issue with using eye bolts for the jury struts rather than the old Piper clamps. It seems that removing the flexibility of the clamps causes the rivets which hold the upper jury strut fitting to the wing spar to loosen. Will you be looking at those rivets during every preflight? Then if you beef up the rivet attachment with bolts, the eye bolts break in the strut.

    Airplanes flex in many places where most of us don't think they flex. When one makes an "improvement" which stiffens that flexibility location, it is not unusual for that "improvement" to fail. By removing that flex location you are stiffening the whole flexible wing/strut assembly so that the flexing is concentrated on your eye bolt.
    N1PA
    Likes 40m, Brandsman liked this post

  8. #208
    skywagon8a's Avatar
    Join Date
    Mar 2008
    Location
    SE Mass
    Posts
    11,072
    Post Thanks / Like
    Quote Originally Posted by Dan Gervae View Post
    Click image for larger version. 

Name:	305EF5BE-2BFD-44E4-A832-97E75756753E.jpg 
Views:	40 
Size:	59.8 KB 
ID:	54828Click image for larger version. 

Name:	3A3F8DC9-53AD-43FE-8FBD-CCBBE6D72C97.jpg 
Views:	30 
Size:	58.6 KB 
ID:	54829Click image for larger version. 

Name:	7F8B3F29-EC47-4978-87C9-2DACB0FF244C.jpg 
Views:	33 
Size:	61.9 KB 
ID:	54830
    I have another question. It appears the wall thickness of those struts is the same around their entire circumference. Has anyone done a calculation as to the bearing load carrying capability of the bolts in the strut wall?

    Why do I ask? Long ago a friend bought a J-3. The lower end of the wing struts had been cut off with an alternate fitting bolted in as shown in your pictures. One day Mr. FAA came by, spotted it and placed a red tag on the Cub. Fortunately I had a friend who was a DAR stress analysis specialist. He looked at it and agreed with Mr. FAA. The fix was to weld on two steel straps (both sides) which doubled the wall thickness of the strut where the bolts went through.

    Your struts are aluminum, the J-3 struts were steel. The bearing strength of aluminum is lower than steel.
    N1PA
    Thanks RVBottomly thanked for this post
    Likes Brandsman liked this post

  9. #209

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    The profile cannot be seen well in the picture...the inner view shows thicker “flats” in the center area and the extrusions themselves are substantial. I believe the tensile strength of these extrusions exceeds that of a steel strut...the steel struts are substantially thinner wall thickness. I don’t have the numbers at the top of my head... but I sure do appreciate feedback on this. I also am going to take your comments on the jury mounting to heart and do some research before I drill the hole. Jay is doing this on his Aluminum struts...are Javron jury upper mounts the same as Pipers? Does the clamp method introduce flexibility by spreading the load along the clamp? Or doe the clamp flex enough to add this flex into the system? Is it the single point that adds stiffness causing the issue you describe? This is interesting. Thank You Pete. I always pay attention when you respond.

  10. #210

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    This pic is grainy, but you can see how I mounted my jury strut tab to the spar
    Click image for larger version. 

Name:	9B3B5F3A-F161-47D6-8B4D-C263903C320A.jpg 
Views:	40 
Size:	25.1 KB 
ID:	54832
    Likes Hardtailjohn liked this post

  11. #211
    skywagon8a's Avatar
    Join Date
    Mar 2008
    Location
    SE Mass
    Posts
    11,072
    Post Thanks / Like
    The airplane which had the eye bolt issue to which I was made aware of was a Cub Crafter airplane. I do not know how Jay does this.

    The flexibility is in the pivot which is allowed by the bolt which passes though the clamp thus acting like a hinge. When that "hinge" is removed, something else has to absorb the flexing. It is the bolt that allows the flex, not the clamp.

    Picture that long strut vibrating. When the lower half moves down the upper half is moving up and vice versa. The jury strut attachment divides those two halves. Thus the bolt which holds the jury strut to the clamp acts as a hinge. When that hinge is rendered inoperable that flexing has to be absorbed elsewhere.

    Your fitting to the spar looks like a couple of AN3s. Certainly adequate. It's the eye bolt in the strut which is my concern.

    If you wish to use an eye bolt in this location, use some other attachment to connect the jury strut to the eye bolt which will allow the flexing (hinging).
    N1PA
    Thanks Dan Gervae thanked for this post
    Likes TurboBeaver liked this post

  12. #212
    skywagon8a's Avatar
    Join Date
    Mar 2008
    Location
    SE Mass
    Posts
    11,072
    Post Thanks / Like
    Another thought to consider is that this destructive vibration failure could be caused by the engine/propeller transmitting a resonance through the airframe with the result making an appearance at this eye bolt. The airplane of which I was made aware of had had two failures of the same eyebolt. The opposite side had not failed.

    Perhaps a different engine/propeller combination would not create this issue?

    I've seen some strange vibration things happen with different power settings, smooth air or not, different air speeds etc. Too many to recall here.
    N1PA
    Thanks Dan Gervae thanked for this post

  13. #213
    skywagon8a's Avatar
    Join Date
    Mar 2008
    Location
    SE Mass
    Posts
    11,072
    Post Thanks / Like
    Quote Originally Posted by Dan Gervae View Post
    The profile cannot be seen well in the picture...the inner view shows thicker “flats” in the center area and the extrusions themselves are substantial. I believe the tensile strength of these extrusions exceeds that of a steel strut...
    I see the increased wall thickness in the "flats" now. It is not the tensile strength of the struts which I addressed. It is the bearing strength of the bolt holes. The ability of the strut to withstand the crushing load of each bolt on the edges of it's hole. Now that I see the thicker flats, that may not be an issue.
    N1PA
    Thanks Dan Gervae thanked for this post

  14. #214
    TurboBeaver's Avatar
    Join Date
    Jun 2009
    Location
    Northern Maine
    Posts
    881
    Post Thanks / Like
    Pete,
    The way Dan has drilled his holes, is quite different than how Jay engineering is. Here is a picture of Jay's.
    On the eye bolt issue, Tom F had let me know about the CC eyebolts failing so that is true however CC's eyebolts are made just opposite of Jay's. The CC eyebolts have the threaded connection starting right behind the eye shoulder, they are breaking there. Jay's are made with the eye and 75%of the shaft all milled interagal, the foot part
    Has the threads on it ahead of a shoulder that meets the top part so you CAN not over tighten the bolt and crush the strut. We always had problems with the Piper bands moving when hauling lots of moosehorns, lots of guys wrapped black tape on struts then reinstalled the bands trying to get them to stay put! This eyebolt thing is same as the Champ set up basically? Your comments on here are always informative!
    EClick image for larger version. 

Name:	IMG_20210317_181256298.jpg 
Views:	40 
Size:	126.8 KB 
ID:	54839
    Below is picture of the CC eyebolts design that have failed.Click image for larger version. 

Name:	1616157449243~2.jpg 
Views:	27 
Size:	92.2 KB 
ID:	54840
    Last edited by TurboBeaver; 03-19-2021 at 07:49 AM.

  15. #215
    skywagon8a's Avatar
    Join Date
    Mar 2008
    Location
    SE Mass
    Posts
    11,072
    Post Thanks / Like
    E, Your Jay picture also has two more bolts, reducing the load per bolt. You are correct on the thread location of the eye bolt. Not only on the crush of the strut but the crack inducing location of the top thread. Right where the loads are concentrated. Perhaps the "Jay" eye bolts will outlive the Cub Crafters bolts. It was Tom's customer who consulted with me on the issue.
    N1PA
    Thanks RVBottomly thanked for this post

  16. #216
    TurboBeaver's Avatar
    Join Date
    Jun 2009
    Location
    Northern Maine
    Posts
    881
    Post Thanks / Like
    Well when the smoke all clears, it seams like Jay's stuff most of the time falls into the ' build a better mouse trap' stuff. I think he looks at how everyone else has done it and simply says " this is how I would build that".
    I will keep you posted how mine hold up. They sure seam
    Solid and Stout........ And are most certainly way ahead of
    60 year old ones with 7/16 forks!!!��Click image for larger version. 

Name:	IMG_20210317_180533943.jpg 
Views:	29 
Size:	129.8 KB 
ID:	54841Click image for larger version. 

Name:	IMG_20210317_180554530.jpg 
Views:	20 
Size:	207.6 KB 
ID:	54842Click image for larger version. 

Name:	IMG_20210317_180544097.jpg 
Views:	18 
Size:	201.9 KB 
ID:	54843
    Last edited by TurboBeaver; 03-19-2021 at 08:19 AM.
    Likes skywagon8a liked this post

  17. #217
    Southern Aero's Avatar
    Join Date
    Jan 2008
    Location
    kcco/1ga2
    Posts
    225
    Post Thanks / Like
    Below is picture of the CC eyebolts design that have failed.Click image for larger version. 

Name:	1616157449243~2.jpg 
Views:	27 
Size:	92.2 KB 
ID:	54840[/QUOTE]




    No compression sleeve to take up space inside strut when torqued down?......................................
    Last edited by Southern Aero; 03-19-2021 at 09:19 AM.
    ......... It doesn't cost any more to go first class! You just can't stay as long.

  18. #218
    TurboBeaver's Avatar
    Join Date
    Jun 2009
    Location
    Northern Maine
    Posts
    881
    Post Thanks / Like
    Here is Jay's.....Click image for larger version. 

Name:	Screenshot_20210319-101349~2.png 
Views:	21 
Size:	137.8 KB 
ID:	54846Click image for larger version. 

Name:	Screenshot_20210319-101349.png 
Views:	22 
Size:	225.9 KB 
ID:	54847

  19. #219
    skywagon8a's Avatar
    Join Date
    Mar 2008
    Location
    SE Mass
    Posts
    11,072
    Post Thanks / Like
    I can't seem to post the picture of the failed fitting. It was at the end next to the eye. The threads go all the way to the eye end.
    N1PA

  20. #220
    cubdriver2's Avatar
    Join Date
    Apr 2003
    Location
    upstate NY
    Posts
    10,548
    Post Thanks / Like
    Click image for larger version. 

Name:	39128.jpeg 
Views:	34 
Size:	108.6 KB 
ID:	54848

    Glenn
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"
    Thanks skywagon8a, TurboBeaver thanked for this post

  21. #221
    Crash, Jr.'s Avatar
    Join Date
    May 2015
    Location
    Anchorage, AK
    Posts
    485
    Post Thanks / Like
    The certified aluminum struts use a traditional strut clamp for what it's worth.
    Likes skywagon8a liked this post

  22. #222
    Steve Pierce's Avatar
    Join Date
    Mar 2002
    Location
    Graham, TX
    Posts
    20,643
    Post Thanks / Like
    Cub Crafters was having an issue of breaking strut attach fittings at the wing spar and then they started shearing the rivets of the beefed up fittings. Some think it is from people pushing and pulling on the struts.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers

  23. #223
    skywagon8a's Avatar
    Join Date
    Mar 2008
    Location
    SE Mass
    Posts
    11,072
    Post Thanks / Like
    Quote Originally Posted by Steve Pierce View Post
    Cub Crafters was having an issue of breaking strut attach fittings at the wing spar and then they started shearing the rivets of the beefed up fittings. Some think it is from people pushing and pulling on the struts.
    Steve, Based upon the information which was given me, It was not from people pushing and pulling on the struts.
    N1PA

  24. #224

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    I don’t know about all of this... I’m taking notes. I do know that I talked to Jay first and he said his struts were big time over kill for my 11...his are rated at 2400 lbs gross...I’m 1320, so it would make sense that mine would be less beefy. Until I held these parts in my hand, and built the struts...I had little tiny questions in my mind....now that I’ve handled them.... they are very structurally sound...the material is substantial and if pull out those AN 4 bolts somehow in flight...it would mean something significant happened. I believe these are much stronger than the struts on my J3...I’m not sure what I’m going to do with the jury struts yet....I still need faileads as well. This is a great discussion and I’m following with great interest.
    Thanks motosix thanked for this post

  25. #225

    Join Date
    May 2014
    Posts
    132
    Post Thanks / Like
    Quote Originally Posted by Dan Gervae View Post
    I don’t know about all of this... I’m taking notes. I do know that I talked to Jay first and he said his struts were big time over kill for my 11...his are rated at 2400 lbs gross...I’m 1320, so it would make sense that mine would be less beefy. Until I held these parts in my hand, and built the struts...I had little tiny questions in my mind....now that I’ve handled them.... they are very structurally sound...the material is substantial and if pull out those AN 4 bolts somehow in flight...it would mean something significant happened. I believe these are much stronger than the struts on my J3...I’m not sure what I’m going to do with the jury struts yet....I still need faileads as well. This is a great discussion and I’m following with great interest.
    I am at 1310lbs GW too and run the Univair J3 struts on my little bird. Any idea of the weight savings between the stock J3 and your new aluminum units?

    Are these the guys that did those struts? southernaero DOT net/ (I can't seem to post the actual URL for some reason)

  26. #226

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    I’ll weigh them....yes, southern aero out of GA. My guess is equal or a pound or two more than J3 struts....they are the same profile (size) as stock Supercub struts.
    Thanks motosix thanked for this post

  27. #227
    Crash, Jr.'s Avatar
    Join Date
    May 2015
    Location
    Anchorage, AK
    Posts
    485
    Post Thanks / Like
    I too would (and do) run the Univair J3 struts. I haven't yet but I need to pull mine and weigh them against the Airframes Aluminum struts. There's probably weight to be saved with AF aluminum struts over J3 struts but I doubt any saved with the Javron struts as they are very heavy duty and therefore heavier to work with a 2300lb gross weight. Just from my calibrated arm scale it feels like the AF aluminum struts are going to be lighter for the rear strut (vs J3 steel struts) and probably about a wash weight wise for the front strut.

    You've already bought the struts though and they look like pretty good units. I'd say just run them and don't fret too hard over ounces or hearsay jury strut issues. Those big old struts aren't working very hard to keep the wings on a 1320lb plane.
    Thanks motosix thanked for this post

  28. #228

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    These were a little less than half the cost of airframes struts and several hundred less than Univair....I had to build them up from the parts.. yes, but I enjoy that part. He sent them with AN eye bolts and sleeves to go inside...is anyone thinking the stresses will actually break the AN eye bolt ? Or are you thinking the sleeve will attempt to pull out? I’m thinking with my set up I’m good...I’ll keep an eye on it. This is the best forum on the internet by far. I’ll keep the updates coming, and you guys keep seeing me in the right direction.
    Thanks motosix thanked for this post
    Likes Hardtailjohn liked this post

  29. #229
    TurboBeaver's Avatar
    Join Date
    Jun 2009
    Location
    Northern Maine
    Posts
    881
    Post Thanks / Like
    Dan I think Crash is right you still have plenty of strut for an 11! Just get some eyebolts from Jay, and his fairleads
    (Also nicely done) and I think your " golden".....
    Good luck on a nice looking Project, your doing a dam good job.
    E
    Likes Crash, Jr. liked this post

  30. #230
    Southern Aero's Avatar
    Join Date
    Jan 2008
    Location
    kcco/1ga2
    Posts
    225
    Post Thanks / Like
    Dan

    Your stock J3 rear strut has less than .150 square inch in cross section (rolled from a 1 1/2" x .035 mild steel tube) and the 6061 aluminum cross section of the rear is .440 sq. in. The stock front J3 strut was rolled from a 2 1/8" x .035 steel tube with less than .150 sq. in. in cross section. Your fronts are 6061 with .772 in cross section. There are plenty of engineer types on here that can put numbers to that.

    Crash, you're pretty much right on the weights. Actually could have run the same size smaller strut in the front and rear but would not have gained much in strength.
    Last edited by Southern Aero; 03-19-2021 at 04:58 PM.
    ......... It doesn't cost any more to go first class! You just can't stay as long.
    Thanks motosix thanked for this post

  31. #231

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    I noticed most Cubs have 2 big cable fairleads, and 1 small one on each front lift strut...is this necessary to eliminate cable vibration? Or, can a fella get away with 2 big ones spaced (one between the jury and fuselage, the other between jury and outboard end?

  32. #232

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    Click image for larger version. 

Name:	2E68ABEC-75F3-4AB2-98C0-9B1A1391AFD6.jpg 
Views:	45 
Size:	60.1 KB 
ID:	55159
    piper put 3, so I put 3
    Likes Crash, Jr., motosix liked this post

  33. #233
    Crash, Jr.'s Avatar
    Join Date
    May 2015
    Location
    Anchorage, AK
    Posts
    485
    Post Thanks / Like
    Quote Originally Posted by Dan Gervae View Post
    I noticed most Cubs have 2 big cable fairleads, and 1 small one on each front lift strut...is this necessary to eliminate cable vibration? Or, can a fella get away with 2 big ones spaced (one between the jury and fuselage, the other between jury and outboard end?
    You're going to end up with one fairlead in roughly the middle of the strut on the jury strut clamp so it would be wise just to do the normal 3 per side. Do your current strut clamps have the fairlead welded in?

    *edit* Duh, I should have read your last post. Good job going with the correct and original locations. The cable already moves around quite a bit with 3 fairleads so I'd hate to see what it does with only 2.

    As an aside, does anyone have the drawings for the original J-3 struts? I'm looking for a cross section drawing of front and rear to calculate some stuff related to aluminum struts.

  34. #234
    Southern Aero's Avatar
    Join Date
    Jan 2008
    Location
    kcco/1ga2
    Posts
    225
    Post Thanks / Like
    Crash

    I have them as .tif files so couldn't upload here but tried to convert them. They were rolled from round tubes to these dimensions and prints don't show original sizes. Cross sectional values aren't shown but shows weights so you can convert from there, I made a mistake at #230 and duplicated the rear strut value of .150 sq. in. for the front strut .............. shudda been .234 sq. in.

    Will send you original .tif files if you would like. Can make out a LITTLE better in originals

    Click image for larger version. 

Name:	10099.png 
Views:	38 
Size:	407.0 KB 
ID:	55163Click image for larger version. 

Name:	10097.png 
Views:	27 
Size:	709.0 KB 
ID:	55164
    Last edited by Southern Aero; 04-08-2021 at 11:18 PM.
    ......... It doesn't cost any more to go first class! You just can't stay as long.
    Thanks motosix thanked for this post

  35. #235
    RVBottomly's Avatar
    Join Date
    Sep 2017
    Location
    Asotin County Washington (KLWS)
    Posts
    1,029
    Post Thanks / Like
    Quote Originally Posted by Southern Aero View Post
    Crash

    I have them as .tif files so couldn't upload here but tried to convert them. They were rolled from round tubes to these dimensions and prints don't show original sizes. Cross sectional values aren't shown but shows weights so you can convert from there, I made a mistake at #230 and duplicated the rear strut value of .150 sq. in. for the front strut .............. shudda been .234 sq. in.

    Will send you original .tif files if you would like. Can make out a LITTLE better in originals
    Aren't those the same as on Christian Sturm's website? They come out pretty well:

    http://www.supercubproject.com/drawi...s/A3290445.pdf

    http://www.supercubproject.com/drawi...s/A3310004.pdf

  36. #236
    Southern Aero's Avatar
    Join Date
    Jan 2008
    Location
    kcco/1ga2
    Posts
    225
    Post Thanks / Like
    Hi RV

    Well those sure are cleaned up nice! I didn't think to look there since these are 1945 drawings
    ......... It doesn't cost any more to go first class! You just can't stay as long.

  37. #237
    Crash, Jr.'s Avatar
    Join Date
    May 2015
    Location
    Anchorage, AK
    Posts
    485
    Post Thanks / Like
    Perfect! Thanks for finding those for me. I've been idly curious if the rear PA-18 aluminum struts are equal in strength to the J3 front struts so that rear struts could be used both front and rear on a J3 and save quite a bit of weight. Now to do some maths and figure this thing out. Thanks again!

  38. #238

    Join Date
    May 2008
    Location
    Upper Peninsula of Michigan
    Posts
    604
    Post Thanks / Like
    Anyone use EZ Turn lube for sealant on NPT brake fittings on a cub?

  39. #239

    Join Date
    May 2014
    Posts
    132
    Post Thanks / Like
    Quote Originally Posted by Dan Gervae View Post
    Anyone use EZ Turn lube for sealant on NPT brake fittings on a cub?
    Loctite 567 is my favorite for NPT and use it on my brake fittings.

Similar Threads

  1. building exp PA11
    By jon s. blocker in forum Cafe Supercub
    Replies: 4
    Last Post: 02-04-2014, 10:51 AM
  2. Are You Building an Experimental Cub?
    By Steve Pierce in forum Experimental Cubs
    Replies: 39
    Last Post: 01-22-2010, 07:18 PM
  3. Experimental SuperCub building
    By Jr.CubBuilder in forum Experimental Cubs
    Replies: 43
    Last Post: 04-21-2004, 04:03 PM

Bookmarks

Bookmarks

Posting Permissions

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