front spar to root rib
Posted: Sat Feb 18, 2012 9:05 am
Hi all,
I've got a problem with connecting the front spar (W117) to the root rib.
MAM says the W117s are identical, and then go thru instructions to locate the
fuselage attach fitting (W119), making the spar right (or left) handed.
OK, so I did all that, and unfortunately, proceeded on to doing all the
fittings to root rib, angle attach bracket, etc. After a few rivets are in,
I realize that all the nose ribs will meet their locations on the front spar
3/8" further down than they should. Checking for cause of the trouble, I see
that the two front spars (W117) were not identical out of the box: all the
prepunched holes are 3/8" offset on one compared to the other. If I had per
chance done the above work with the other front spar, I would have had no
problems. At this point I see no good way out other than to order a new
front spar. I'm pretty sure I don't have any basic mistakes, such as the
angle attach bracket (W161) on the wrong side of the root rib, or, perhaps
the front spar on upside down (130deg angle on the bottom instead of top). I
put a couple pictures at
http://mae.ucdavis.edu/ransom/BensAlbum ... 140010.JPG
http://mae.ucdavis.edu/ransom/BensAlbum ... 140011.JPG
If anyone sees anything I've goofed up, or suggestions to above, I'd
appreciate input.
Thanks,
-Ben Ransom
*-------------------------------------------------------------------------*
To unsubscribe from this list go to:
https://www.dcsol.com/public/code/html-subscribe.wcx
Archives located at https://www.dcsol.com/default.htm
Archives public username "rebel" password "builder"
To contact the list admin, e-mail mike.davis@dcsol.com
*-------------------------------------------------------------------------*
-----------------------------------------------------------------
List archives located at: https://mail.dcsol.com/login
username "rebel" password "builder"
Unsubscribe: rebel-builders-unsubscribe@dcsol.com
List administrator: mike.davis@dcsol.com
-----------------------------------------------------------------
I've got a problem with connecting the front spar (W117) to the root rib.
MAM says the W117s are identical, and then go thru instructions to locate the
fuselage attach fitting (W119), making the spar right (or left) handed.
OK, so I did all that, and unfortunately, proceeded on to doing all the
fittings to root rib, angle attach bracket, etc. After a few rivets are in,
I realize that all the nose ribs will meet their locations on the front spar
3/8" further down than they should. Checking for cause of the trouble, I see
that the two front spars (W117) were not identical out of the box: all the
prepunched holes are 3/8" offset on one compared to the other. If I had per
chance done the above work with the other front spar, I would have had no
problems. At this point I see no good way out other than to order a new
front spar. I'm pretty sure I don't have any basic mistakes, such as the
angle attach bracket (W161) on the wrong side of the root rib, or, perhaps
the front spar on upside down (130deg angle on the bottom instead of top). I
put a couple pictures at
http://mae.ucdavis.edu/ransom/BensAlbum ... 140010.JPG
http://mae.ucdavis.edu/ransom/BensAlbum ... 140011.JPG
If anyone sees anything I've goofed up, or suggestions to above, I'd
appreciate input.
Thanks,
-Ben Ransom
*-------------------------------------------------------------------------*
To unsubscribe from this list go to:
https://www.dcsol.com/public/code/html-subscribe.wcx
Archives located at https://www.dcsol.com/default.htm
Archives public username "rebel" password "builder"
To contact the list admin, e-mail mike.davis@dcsol.com
*-------------------------------------------------------------------------*
-----------------------------------------------------------------
List archives located at: https://mail.dcsol.com/login
username "rebel" password "builder"
Unsubscribe: rebel-builders-unsubscribe@dcsol.com
List administrator: mike.davis@dcsol.com
-----------------------------------------------------------------