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Dana Overall's RV-7 Construction Site. This site is also under construction.
Elevator 7
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sale 2
Trio Auto Pilot Install
Trio Install Day 2
Final Panel w/Trio
sadf
SERFI2004
Vertical Stab
Horizontal Stab 1
Horizontal Stab 2
Horizontal Stab 3
Rudder 1
Rudder 2
Rudder 3
Elevator 1
Elevator 2
Elevator 3
Elevator 4
Elevator 5
Elevator 6
Elevator 7
Wings-Inventory
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Wings-Tiedowns
Wings-Rear Spar
Wings-Initial wing assembly
Wings-attaching ribs
Wings-Skins
Fuselage
Finish package
Links
Flying RV pictures
Misc.
Current status
House
Boat

el37.jpg

As you can see in the above picture, something doesn't look like it will pass inspection.  I think you might call this binding:-).  When Van's redesigned the 7 counterbalance (by placing the weight more forward and positioning it side to side instead of front to back) they were able to lessen the amount of required weight.  Good deal at this aft moment.  What they did not do was change the skin cutout. No big deal.........look at the next picture.
 
I wanted to maintain the same separation I had between the 713 and the skin on the side, on the front.  I had to take out 27mm to achieve this.  I drilled a #30 hole in the corner of my cutout and then snipped out as much as I could (more than is in this picture).  I filed the remainder down, then used my hand deburring tool to clean it up.

el38.jpg

el39.jpg

Not too much work at all and it came out nicely.  You have to this top and bottom, both sides.

el40.jpg

Before you drill the 1/4 hole in your horn, spend some time and make sure you have positioned your rod end bearings and the distance you need them to be.  By doing this you can change the gap between the fore and aft openings at the 713 and the gap side to side of the elevator and horizontal stab.  I marked the horn a little differently than the plans explained.  I'm sure the plans way works but my way worked out for me.  I used a new 1/4 pilot indexed wood drill bit and fit it through the bearing.  I had my son hold the 713 flush the the HS and turned the bit very slowly so as not to damage the HS bearing.  I turned it slow enough that the bit did not turn in the bearing, just the bearing.   The pilot tip indexed the horn just enough for me to center punch the index.  I started out with a #40 bit, then #30 and so on until I could use my Unibit to drill out the 1/4" hole.  I did this with both sides.

el41.jpg

The came out perfectly (can there be such a thing:-).  When I move each elevator up or down by itself, the bolt never moves in the bearing.  I could not have asked for it to turn out any better.

tadaa.jpg

One RV-7 emp. using the new construction techniques and NO JIGS!!  Less than 100 hours total time. 

 Bo124rs@hotmail.com