Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Page 4 of 27 FirstFirst ... 2345614 ... LastLast
Results 76 to 100 of 660

  1. #76
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Welcome, JohnShe


    Well tonight was one of those few nights I felt like working on SW after work.
    I build stuff all day at work, don't often feel like building again when I get home.

    With the right wing off the build table (not complete yet still lots to do to it) I thought make some hay.
    So I started the left wing. Just an update shot nothing more.

    Click image for larger version. 

Name:	upload 8 002.JPG 
Views:	50 
Size:	1.46 MB 
ID:	1974972

    Many of you will know this.

    Sig only gives the right wing on the prints.
    If you take your prints and get them copied then turned into a PDF file.
    You can do a mirror print of the wing panel and have the other half.
    Of course all lettering is backward.

    The top one is the original and the lower the mirror.
    Click image for larger version. 

Name:	upload 8 001.JPG 
Views:	57 
Size:	1.48 MB 
ID:	1974976

    I don't mind telling you I was glad to have the other half.
    After building left to right for two weeks I had to catch myself not thinking right to left.

    Kevin
    Last edited by Melchizedek; 03-04-2014 at 07:56 PM.

  2. #77
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Just an update.

    The left wing has been built up to the same point as the right.
    Now I can flip them both over and work up both undersides at the same time.
    This was my preference to do it this way as to one near complete half at a time.

    You may notice the trailing edge of the right wing lifting a bit.
    I haven't glued the sheet metal to the table top yet.
    The sheet sits flat on the table except for the far right.
    It lifts a little on the right and is lifting the wing on the far right.

    Click image for larger version. 

Name:	upload 8 023.JPG 
Views:	93 
Size:	1.46 MB 
ID:	1976476 Click image for larger version. 

Name:	upload 8 024.JPG 
Views:	88 
Size:	1.48 MB 
ID:	1976477

    Next up, work up the under side.

    Kevin
    Last edited by Melchizedek; 03-09-2014 at 03:28 PM.

  3. #78
    VincentJ's Avatar
    Join Date
    Mar 2011
    Location
    peterborough, NH
    Posts
    2,727
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Your work continues to impress me Kevin, great job. Looks like you may need to get a bigger build table!

    Is that a vintage Ryan STA kit I see in the background? NICE!!!!!!
    Last edited by VincentJ; 03-10-2014 at 05:38 AM.
    VJ

    Ryan ST-A Brotherhood #2, Sig Brotherhood #143

  4. #79
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Thank you Vincent

    I would love a bigger table. Only thing is I am a clutter bug. I would just fill it up with more mess.
    The saving grace about doing a build log is it forces you (some of us anyway) to pick up before pics.

    Yes that Vintage Ryan will probably be my next build. I fell in love with it while watching you build yours.
    Your builds are infectious you know, in a good way.
    Found it on ebay. I have not taken inventory of it yet.
    It looks to be all there. The prints are permanently creased and the paper is yellowed and very delicate. It looked like
    they hung on a wall (tape marks) for 10 years then folded tight, put back in box for another 20.
    I am most happy to have it.

    Kevin

  5. #80
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Next up is preparing the trailing edge of the underside of wing.

    Sig says to use epoxy to glue the trailing edge. 1 so balsa sheeting don't warp and 2 increase trailing edge strength.
    I have seen G10 used on trailing edges for ding protection. I ordered some a while back to get my hands and eyes on some.
    The sheet I have is .02 thick. A little on the thin side but decided to use it.

    First ripped some on a table saw to 3/16 wide. I used a backer board to minimize chipping.
    Click image for larger version. 

Name:	m_Trailing edge 002.jpg 
Views:	32 
Size:	192.0 KB 
ID:	1978543

    Next step was to put a rabbit on the edge of the sheeting to accept the G10.
    The Trailing edge sheeting is 3/32 by 1 1/2. I set up a router to make the rabbit.

    Click image for larger version. 

Name:	m_Trailing edge 001.jpg 
Views:	35 
Size:	210.8 KB 
ID:	1978544

    Machining a flimsy piece of balsa sheeting took some thought.

    First I taped to pieces together to make them larger and easier to handle.
    Taped the joint then filler taped the edge to keep the thickness the same.
    Then placed them on edge of bench with the edge barely hanging over and locked them in place.
    Place an in feed and out feed scrap piece to keep the router from cutting deep on ends.
    Then ran router down edge to cut the rabbit.

    Click image for larger version. 

Name:	m_Trailing edge 003.jpg 
Views:	36 
Size:	281.3 KB 
ID:	1978546 Click image for larger version. 

Name:	m_Trailing edge 004.jpg 
Views:	37 
Size:	207.0 KB 
ID:	1978547 Click image for larger version. 

Name:	m_Trailing edge 005.jpg 
Views:	37 
Size:	198.7 KB 
ID:	1978548 Click image for larger version. 

Name:	m_Trailing edge 006.jpg 
Views:	35 
Size:	269.2 KB 
ID:	1978550 Click image for larger version. 

Name:	m_Trailing edge 008.jpg 
Views:	37 
Size:	230.1 KB 
ID:	1978551

    These are the trailing edge with the .02 by 3/16 rabbit.
    Click image for larger version. 

Name:	Trailing edge 009.JPG 
Views:	60 
Size:	1.35 MB 
ID:	1978552

    Then cut some 3/4 by 1 1/2 MDF strips for sandwich boards to make a flat laminations.
    Mixed up some epoxy and set the G10 strips in there rabbits. Wax paper and clamped together.

    Click image for larger version. 

Name:	m_Trailing edge 010.jpg 
Views:	47 
Size:	268.1 KB 
ID:	1978553

    Trimmed the building tabs from the trailing edge and sanded the top sheeting trailing edge to the contour of the bottom of wing.
    Click image for larger version. 

Name:	m_Trailing edge 011.jpg 
Views:	52 
Size:	221.4 KB 
ID:	1978554 Click image for larger version. 

Name:	m_Trailing edge 015.jpg 
Views:	49 
Size:	238.9 KB 
ID:	1978555 Click image for larger version. 

Name:	m_Trailing edge 016.jpg 
Views:	44 
Size:	252.4 KB 
ID:	1978556

    Epoxy still drying on trailing edge sheeting.
    Till next time.

    Kevin

  6. #81
    acerc's Avatar
    Join Date
    Sep 2006
    Location
    The Sunshine state, when it's not raining!
    Posts
    7,279
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Very impressive Kevin.
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

  7. #82
    TomCrump's Avatar
    Join Date
    Apr 2003
    Location
    Traverse City, MI
    Posts
    6,002
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Quote Originally Posted by acerc View Post
    Very impressive Kevin.
    Yes it is !
    Tom C

    Sig Brotherhood # 120

  8. #83
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Thank you, Robert & Tom

    Kevin

  9. #84

    Join Date
    Jun 2009
    Location
    Idaho
    Posts
    2,045
    Kevin I think you are about to join an elite groupe of builders with the work your doing. Your construction is very clean at this point and I expect it to continue on the rest of it. Very nice indeed.

    Leroy

  10. #85
    VincentJ's Avatar
    Join Date
    Mar 2011
    Location
    peterborough, NH
    Posts
    2,727
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    +1
    VJ

    Ryan ST-A Brotherhood #2, Sig Brotherhood #143

  11. #86
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Leroy & Vincent Yay...........


    Seriously, what a nice compliment.
    Humbling.

    Thank You

    Kevin
    Last edited by Melchizedek; 03-18-2014 at 03:47 PM.

  12. #87
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Greetings,

    Got a little done last night.

    Unclamped the trailing edges and was pleased how they turned out.

    In the first photo from left to right g10 up, down, up, down.

    Click image for larger version. 

Name:	m_Trailing edge 2 001.jpg 
Views:	42 
Size:	328.6 KB 
ID:	1979578

    Click image for larger version. 

Name:	m_Trailing edge 2 003.jpg 
Views:	35 
Size:	338.7 KB 
ID:	1979579 Click image for larger version. 

Name:	m_Trailing edge 2 004.jpg 
Views:	32 
Size:	440.2 KB 
ID:	1979580 Click image for larger version. 

Name:	m_Trailing edge 2 006.jpg 
Views:	29 
Size:	412.8 KB 
ID:	1979582

    Cleaned them up a little with a sanding block and then proceeded to glue trailing edge down with g10 up.

    I used spacer sticks to position the trailing edge at the proper distance back and for trueness.
    Spacers touched trailing edge of rear wing spar and front edge of trailing edge.
    Spread epoxy down trailing edge glue line. Pinned into place and clamped.

    Click image for larger version. 

Name:	m_Trailing edge 2 008.jpg 
Views:	38 
Size:	433.4 KB 
ID:	1979583 Click image for larger version. 

Name:	m_Trailing edge 2 009.jpg 
Views:	37 
Size:	414.4 KB 
ID:	1979587 Click image for larger version. 

Name:	m_Trailing edge 2 010.jpg 
Views:	31 
Size:	450.9 KB 
ID:	1979586 Click image for larger version. 

Name:	m_Trailing edge 2 011.jpg 
Views:	32 
Size:	347.4 KB 
ID:	1979588 Click image for larger version. 

Name:	m_Trailing edge 2 012.jpg 
Views:	30 
Size:	339.8 KB 
ID:	1979589


    I used hysol epoxy. Normally I will just pump it out in a mixing cup and mix it by hand and not use the mixing tips.
    But with 8 foot of glue line I decided to hit the " easy button" and use a tip.

    Click image for larger version. 

Name:	m_Trailing edge 2 007.jpg 
Views:	39 
Size:	459.7 KB 
ID:	1979590

    That's all for now.

    Kevin

  13. #88
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Next up is the wing mount blocks and ply plates.

    I was not happy with how this went. My guess it will be ok but still not happy.
    This might be a take note post for those of you who intend to build the SW.
    But then again, maybe not ! (said the candlestick to the beast) .

    Ok, following the recipe from the build manual.
    Find 1 1/2 " square ply wing mounting plates. Check
    Position them on wing bottom according to plan. Check
    Cut out sheeting to make room for plates. Check
    Everything good at this point.

    Click image for larger version. 

Name:	m_wing mount blocks 12 001.jpg 
Views:	42 
Size:	462.4 KB 
ID:	1980443


    Well I cut the sheeting to make room for the plates.
    Next cut the triangular shaped balsa block to fit between ribs and slip between sheeting. Not so Check
    Let me explain
    First (insert rookie) I did not take note triangle block not symmetrical. Slant of top of wing dif from bottom.
    The inboard end needed to be cut at 5 deg. Well I cut them upside down and put the 5 deg on the outboard end.
    Now they will be short. Check
    So I begin to slip them in the pocket.
    Turns out because of the little glue fillets and run downs from the sheeting, a nice tight fit might be a fools errand.
    I have to make all kinds of compromises to get this wedge into place.
    Get everything into place and rely on epoxy to fill voids. Check
    I did clamp a straight edge to top of wing (wing upside down) to keep the sheeting from budging when triangle and epoxy pressed into place

    Click image for larger version. 

Name:	m_wing mount blocks 12 002.jpg 
Views:	39 
Size:	418.0 KB 
ID:	1980444 Click image for larger version. 

Name:	m_wing mount blocks 12 003.jpg 
Views:	38 
Size:	424.8 KB 
ID:	1980445 Click image for larger version. 

Name:	wing mount blocks 12 004.JPG 
Views:	39 
Size:	1.51 MB 
ID:	1980447 Click image for larger version. 

Name:	m_wing mount blocks 12 005.jpg 
Views:	43 
Size:	442.7 KB 
ID:	1980448


    If I had this to do over. I would have fit triangular balsa block in between ribs before sheeting top or bottom of trailing edge.
    This would have made a tight fit easy. Assuming the 5 deg angle is put on correct end.
    Then after sheeting mortise ply plate in place with router or dremel with router base.
    But then again, Maybe Not.

    Kevin

  14. #89
    TomCrump's Avatar
    Join Date
    Apr 2003
    Location
    Traverse City, MI
    Posts
    6,002
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    No build goes smoothly all the time. There are always a few bumps in the road. We all hit them.

    Just yesterday, I ran into a similar problem, same part, different airframe and kit company. For some reason, I followed the instructions. Afterwards, I figured out that they had done it the hard way. LOL

    Your build is coming along well. You should be pleased.
    Tom C

    Sig Brotherhood # 120

  15. #90
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Tom,
    Thanks for checking in.
    I am pleased with how things are going so far. Was just lamenting on that Bump in my road.
    It spilled coffee all over me.

    I find a complex structure fascinating to look at, more so than after it is skinned.
    This wing is cool to behold with all the circular cutouts and such standing in line like little soldiers.

    After the epoxy dried I gave both halves a good flex at the wing bolt plate area. The epoxy bridged things really well its good and stiff.

    Was time to skin leading edge.
    This time I made a cawl to press the skin down.

    Cut a 3" wide piece of 3/4 mdf. This stuff was good and straight, would not have been suitable otherwise.
    Then cut a little shoe for the front edge (bottom of slope), and glued it the plate.
    Then trial fit it to see if everything was aok. No glue on at this point.

    Click image for larger version. 

Name:	m_Wing underside upload 13 001.jpg 
Views:	40 
Size:	299.7 KB 
ID:	1980866 Click image for larger version. 

Name:	m_Wing underside upload 13 002.jpg 
Views:	45 
Size:	395.6 KB 
ID:	1980867 Click image for larger version. 

Name:	Wing underside upload 13 003.JPG 
Views:	43 
Size:	1.45 MB 
ID:	1980869 Click image for larger version. 

Name:	m_Wing underside upload 13 004.jpg 
Views:	43 
Size:	327.7 KB 
ID:	1980870 Click image for larger version. 

Name:	Wing underside upload 13 005.JPG 
Views:	48 
Size:	1.31 MB 
ID:	1980871


    After leading edge sheeting glued, attention was turned to rear spar and aileron spare.
    The rear spar was added on to just like the top was back on post #71.
    What was different this time is the front aileron spar is back to far for my aileron mod.
    So I made notches for a new spar moving it forward 3/16 from its current position.

    Also if you notice in the second photo below, the end aileron ribs on both ends are already cut to the stock aileron profile.
    This meant there would be nothing to hold the spar when the aileron is cut from the wings.
    So I decided to leave the old spar at the ends and bridge it to the new spar.
    This would give a little girth until bullnose is glued to leading edge of aileron.
    Then cut the old spare out in between.


    Click image for larger version. 

Name:	m_Wing underside upload 13 006.jpg 
Views:	47 
Size:	356.5 KB 
ID:	1980872 Click image for larger version. 

Name:	m_Wing underside upload 13 007.jpg 
Views:	44 
Size:	398.1 KB 
ID:	1980873 Click image for larger version. 

Name:	m_Wing underside upload 13 008.jpg 
Views:	51 
Size:	450.7 KB 
ID:	1980874

    I'm getting excited to complete wings to the point of separation but still much to do.

    Kevin

  16. #91

    Join Date
    Jun 2009
    Location
    Idaho
    Posts
    2,045
    Keven it sure looks straight, nice bit of construction and the pictures make it look 10' long. Are the ailerons hinged on top like the 1/4 scale and tapered leading edge for down travel.

    Leroy

  17. #92
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Hi Leroy,

    Yes the stock aileron is just how you describe.
    Click image for larger version. 

Name:	DSC_0030.JPG 
Views:	48 
Size:	1.50 MB 
ID:	1980902

    What I am doing is reflected in this second picture. You will see why all the moving of the spars.

    Click image for larger version. 

Name:	DSC_0010.JPG 
Views:	67 
Size:	1.51 MB 
ID:	1980903

    Yes the pictures do make it look 10 ft. The size of the room I'm working in really only lets me take shots from one end.
    There is only about 36 inch on each side of table. I do have a wide angle lens. Maybe I will give that a try.

    Kevin

  18. #93
    VincentJ's Avatar
    Join Date
    Mar 2011
    Location
    peterborough, NH
    Posts
    2,727
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Kevin each "speed bump" that you hit just gives you more experience for future builds. Things are shaping up very nicely...keep up the good work.
    VJ

    Ryan ST-A Brotherhood #2, Sig Brotherhood #143

  19. #94

    Join Date
    Jun 2009
    Location
    Idaho
    Posts
    2,045
    OK now I see what your doing, an inset rotating aileron will be nice, then you will use radio to adjust differential I suspect. Being as wide as it is you are going to have to extend the point on the wing side if your useing Robart hinge points, there is a method to do that if you need to know.

    Lerot

  20. #95
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Yes, I am planning on using the Robart hinges.
    And yes extension will be necessary.
    I figured I would set the wing end in a peg or tube and then glue that into the wing.

    This will be my first experience with Robart hinges.
    Yes would love to see the method you speak of.
    Much to learn, I do.

    Kevin

  21. #96

    Join Date
    Jun 2009
    Location
    Idaho
    Posts
    2,045
    Kevin pictures arn't the greatest, sorry. Extension tubes size for 3/16" hinge points is O.D. .219" and has a wall thickness of .015 thow., fits hinge near perfect, I slid point in it and marked it then sat it along side to mark the barbs, put it back in and with a tubing cutter ran it around the marks just enough to make an impression, you dont want to cut it, it will be solid as a rock when your done just cut it to the length you want then make another, the grooves will grab the glue when you install them. ( USE 30 min. EPOXY)

    A 1/4" bit for the tubes will work well and a pinch clamp at each end of aileron to wing will get you perfect alignment. For spacing I use two layers of file folder which can be easily pulled out after glue sets. When you do these hinges put them in aileron first.

    Leroy
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IM000360.JPG 
Views:	58 
Size:	845.6 KB 
ID:	1981498   Click image for larger version. 

Name:	IM000361.JPG 
Views:	49 
Size:	879.1 KB 
ID:	1981499   Click image for larger version. 

Name:	IM000362.JPG 
Views:	60 
Size:	847.3 KB 
ID:	1981500   Click image for larger version. 

Name:	IM000363.JPG 
Views:	55 
Size:	901.5 KB 
ID:	1981501   Click image for larger version. 

Name:	IM000364.JPG 
Views:	54 
Size:	896.8 KB 
ID:	1981502  


  22. #97
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Thanks for the demo Leroy.

    I would not have thought of putting the ribs in the brass tube like that.
    Very Clever. I will put that into "Best Practices" category and employ it.

    Kevin

  23. #98

    Join Date
    Jun 2009
    Location
    Idaho
    Posts
    2,045
    Quote Originally Posted by Melchizedek View Post
    Thanks for the demo Leroy.

    I would not have thought of putting the ribs in the brass tube like that.
    Very Clever. I will put that into "Best Practices" category and employ it.

    Kevin
    Kevin I forgot to mention that when drilling the blocks make sure you drill clear through them, if you don't the pressure of installing the hinge will push glue out toward the pivot head instead of out the back and you don't want that.

    Leroy

  24. #99
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Thanks' Leroy on the heads up about the Shmooey squeeze out.

    I was pondering the hinge points and there installation.
    Make a jig to drill them later or .................

    This approach may be unorthodox and or ill advised, but here goes.

    First cut some strips of poplar 7/16 x 7/16 by 4" .
    Then set up a jig on drill press to hold them square straight up and down.
    Then drilled 3/16 hole in the center.

    Click image for larger version. 

Name:	m_Hinge Bosses upload 14 001.jpg 
Views:	39 
Size:	407.3 KB 
ID:	1982578 Click image for larger version. 

Name:	m_Hinge Bosses upload 14 002.jpg 
Views:	41 
Size:	393.7 KB 
ID:	1982579

    I drew a line down the face that set against the fence for indexing purposes.
    I then cut them into lengths of one robart leg and one longer for the extended leg.
    Each length was numbered with it's brother for indexing purposes.
    The left over was cut into 7/8 long spacers that were slimmed down.
    I then cut 3/16 dowel rod to line them all up.

    Click image for larger version. 

Name:	m_Hinge Bosses upload 14 003.jpg 
Views:	40 
Size:	350.5 KB 
ID:	1982580 Click image for larger version. 

Name:	m_Hinge Bosses upload 14 004.jpg 
Views:	40 
Size:	467.8 KB 
ID:	1982581 Click image for larger version. 

Name:	m_Hinge Bosses upload 14 005.jpg 
Views:	48 
Size:	450.4 KB 
ID:	1982582

    My intension is to center these hinge blocks on the hinge line and in there place front and back.
    The 7/8 inch spacer on a diet is part of this.
    I then cut lengths of mdf that will index these hinge blocks front to back.
    Then glued a shelf to one end to hold the front block at the correct elevation.
    That elevation is indexed from the top of the wing rib.
    Everything is indexed from the front main spar.

    Click image for larger version. 

Name:	m_Hinge Bosses upload 14 006.jpg 
Views:	37 
Size:	380.7 KB 
ID:	1982590 Click image for larger version. 

Name:	m_Hinge Bosses upload 14 009.jpg 
Views:	40 
Size:	345.2 KB 
ID:	1982594

    Each outboard and inboard hinge block got a 3/16 shim glued to it to keep it in plane with the aileron ends.
    A shim block was used to index the elevation of the trailing edge block.

    Click image for larger version. 

Name:	m_Hinge Bosses upload 14 008.jpg 
Views:	44 
Size:	415.7 KB 
ID:	1982593 Click image for larger version. 

Name:	m_Hinge Bosses upload 14 010.jpg 
Views:	40 
Size:	310.7 KB 
ID:	1982595 Click image for larger version. 

Name:	m_Hinge Bosses upload 14 013.jpg 
Views:	39 
Size:	381.1 KB 
ID:	1982596

    All blocks were epoxied and clamped in place.
    The face of the blocks that were against drill press fence got the glue.
    The wing trailing edge block bridges a lightening hole .
    After epoxy sets I will go back and reinforce blocks.
    The dowel rods will be pushed out and the 7/8 spacers discarded.

    This shot is with a wide angle lens.

    Click image for larger version. 

Name:	m_Hinge Bosses upload 14 012.jpg 
Views:	45 
Size:	481.3 KB 
ID:	1982597


    Till next time,

    Kevin

  25. #100
    Melchizedek's Avatar
    Join Date
    Jul 2012
    Location
    Missouri
    Posts
    849
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Next up is leading edge.

    Actually next up was going to be cutting out the trailing edge spar at aileron.
    I had already added to the back of it to make up what I will take out.
    But I could not find my 1/4 inch router bit. No surprise here.
    This is one of my crosses in life. Set something down with a grand idea in my mind
    and the thing I set down is gone forever. Or at least till I don't need it anymore.
    I digress.

    I decided to work horizontal on this part and use gravity in my favor.
    So turned the wings on edge and cleaned up the overhanging leading edge sheeting.

    Used a router for this. I did not cut it all the way down. Left about 1/32 to sand flush.
    I climb cut the sheeting. Climb cutting is when you feed stock backwards so the bit does not tear out the material.
    Climb cutting can be very dangerous on hardwood if careless or inexperienced (sometimes even if experienced and not careless).
    Insert " Don't try this at home" . On soft balsa not so much.

    This left two parallel edges for the sanding bar to easily finish off nice and square.

    Click image for larger version. 

Name:	m_Leading edge upload 15 001.jpg 
Views:	44 
Size:	346.4 KB 
ID:	1982747 Click image for larger version. 

Name:	m_Leading edge upload 15 002.jpg 
Views:	43 
Size:	351.6 KB 
ID:	1982748 Click image for larger version. 

Name:	m_Leading edge upload 15 003.jpg 
Views:	40 
Size:	337.1 KB 
ID:	1982749

    I thought this was a cool shot. The pic is not as cool as in person cause of lighting.

    Click image for larger version. 

Name:	m_Leading edge upload 15 004.jpg 
Views:	44 
Size:	275.6 KB 
ID:	1982753

    Here is a shot of my hinge bosses.

    Click image for larger version. 

Name:	m_Leading edge upload 15 006.jpg 
Views:	52 
Size:	299.9 KB 
ID:	1982754


    The leading edge is 1/4 x 7/8

    Click image for larger version. 

Name:	m_Leading edge upload 15 007.jpg 
Views:	44 
Size:	320.7 KB 
ID:	1982756 Click image for larger version. 

Name:	m_Leading edge upload 15 008.jpg 
Views:	45 
Size:	483.3 KB 
ID:	1982758


    Next I made some profile end blocks out of oak, why oak ? That's what I had laying around and it is hard.
    Then I cut some 1/4 x 1/4 x 6 strips to extend the profile out to these end blocks.
    I thought I got a pic of this but didn't .
    I tac glued the sticks to the sheeting in four locations around the leading edge profile sticking out past the end 2 inches.
    I then tucked the oak profile blocks up into over hanging sticks and ca'd then in place.
    This left me with hard points left and right to sand the profile to.
    I then used a 56" long straight edge with 80 grit stuck to it and sanded to the oak profile blocks.

    Click image for larger version. 

Name:	m_Leading edge upload 16 001.jpg 
Views:	47 
Size:	405.8 KB 
ID:	1982848 Click image for larger version. 

Name:	m_Leading edge upload 16 002.jpg 
Views:	43 
Size:	386.1 KB 
ID:	1982849 Click image for larger version. 

Name:	m_Leading edge upload 16 004.jpg 
Views:	49 
Size:	296.8 KB 
ID:	1982851 Click image for larger version. 

Name:	m_Leading edge upload 16 005.jpg 
Views:	43 
Size:	321.0 KB 
ID:	1982852

    Shaping the leading edge on this long of a wing I found to be a pain in the but.
    It is almost a 2 person job. You hold while I go to town on this.
    I was the only one at home so, I hold while I go to town on this.
    Oh well, got er done. Feels good.



    Kevin
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	m_Leading edge upload 16 003.jpg 
Views:	41 
Size:	371.7 KB 
ID:	1982850  
    Last edited by Melchizedek; 03-30-2014 at 04:38 PM. Reason: added info


Page 4 of 27 FirstFirst ... 2345614 ... LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 01:50 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.