Onex&nbsp;<br /><br />
  • Home
    • The Sonex Workshop
    • Tools >
      • Piano hinge ruler jig
      • Cutting aluminum
    • Workshop
  • Onex Build
    • Wing attach
    • Electrical
    • Instrument panel
    • Controls >
      • Trim System
    • TAIL FEATHERS-Horizontal Forward Spar >
      • Horizontal Aft Spar >
        • Horizontal Stab assembly
      • Vertical Forward spar assembly &main (aft) spar assemblyy
      • Rudder and elevators
      • Tail installation ONX-T01
    • Wings ONX-W23 thru >
      • Spar -inboard
      • Spar Outboard >
        • Skinning and dimpling
      • Ailerons and Flaps
    • Fuselage F22 to F14 >
      • F13 to F1
    • Landing Gear >
      • Hydraulic / Toe Brakes
      • Nose Wheel
    • Fuel system
    • Windshield-Canopy
    • Cowling-upper& lower >
      • Engine Baffle
    • Paint ,Interior
  • Carb Heat Box
  • My Scott Casler Hummel 2400cc Install
    • First engine start
    • Quick comparison
    • Aerovee >
      • Prop/Hub failures
    • Revmaster
    • Great Plains and Hummel
  • Canopy
  • Trailer
  • Battery box
  • Inner wing build
  • Stuff
    • Bit And Pieces
    • Sonex plans
    • Flying movies
    • Pic's from other builders
  • Other sites
  • Video Hints
  • Written Hints
  • Problems avoided
  • Window shopping
    • Brakes
  • Oshkosh trips
  • Paint

All the pieces for the aft spar assembly

Picture

1st problem

Picture
It was straight forward.Up-drill a few holes to hold all the parts together with clecos and then up drill #30 drill bit the rest of the holes,take apart and deburr front and back of each part.
It was then I discovered what is obvious in the picture.Sonex drilled the 2 holes highlighted in the wrong location on the strap(2 arrows) which means I transfered the mistake to the spar.This is where a rib is located so a quick check with the rib told me that the holes are too far apart to catch the rib.It is apparent that if I were to re-drill in the proper place that the holes would overlap creating an oblong hole.Not good.
I have contacted Sonex and sent a picture to show them the error  and they said I need a new strap because I inadvertently drilled the 2 holes through the strap in the wrong place.


I recieved the new strap Nov 4.Great service!

I made sure I did not up drill the same 2 holes and used the spar channel to locate the holes in the right place.Onward and upward.


The right side of the strap was drilled properly as can be seen in the picture below.

It should be noted that had I visited this page at Sonex 
http://www.sonexaircraft.com/support/onex_revs.html  

I would have avoided the mistake.3rd one down ........My bad.



Picture

Glitch

Picture
On the plans it shows all the holes riveted.Remember that a rib attaches to the 5 row in from the ends so 
NO RIVETS HERE YET!

Picture
Picture
At left is one of the attach angles that attach to the rear spar.On the revisions it says that it has to be 7*.The 2 angles are 10* 
I put them in the arbor press upside down and tweaked it till i opened the angle to the 7 degrees required .Easy to assume it's already done so make sure to check.Mine were at 10 degrees.





Here it is at 7*
I highly recommend this steel angle check.Very precise setting ability.I also have one of those plastic ones.Waste of money.Especially in the small angle setting such as this 7*
It was impossible to get the right angle locked in.