Full Ribs to Rear SparParts LayoutJuly 6, 2009

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7H2-2, Horizontal Stab Rear Spar with upper and lower doublers

clecoed.

7H1-2, Stab Full Ribs

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Lower doubler

Full Ribs to Rear SparJuly 6, 2009

7H2-2, Horizontal Stab Rear Spar

Note that the stab is forward up with top

to edge of table.

Test fit of 7H1-2, Stab Full Rib. Rib is

positioned with flanges pointing outboard with web of spar adjacent to and in contact with the ends of the doublers.

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Lower doubler

Full Ribs to Rear SparJuly 6, 2009

7H2-2, Horizontal Stab Rear Spar

Line made by drawing along the edge of the now-removed full rib flange

Rivet line, drawn halfway between the

rib edge marking and the ends of the

doublers

Four rivet locations marked; note that

the top and bottom

rivets are located in

line with the doubler

rivet lines.

Upper doubler

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Full Ribs to Rear SparJuly 6, 2009

7H1-2, Horizontal Stab Full Rib

Rivet line drawn on

rear flange of full rib

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Full Ribs to Rear SparJuly 6, 2009

7H2-2, Horizontal Stab Rear Spar Rivet line on full

rib’s rear flange was sighted

through this hole, drilled #40 bit, and clecoed. This hole is used as a pivot to square the rib against the spar.

Note that the view here is from aft, with top of assembly to

top.

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Full Ribs to Rear SparJuly 6, 2009

7H2-2, Horizontal Stab Rear Spar

Rib was squared to the spar using

the top hole drilled and

clecoed as a pivot.

Note that the view here is from the front, with top of assembly to top.

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Full Ribs to Rear SparJuly 6, 2009

7H2-2, Horizontal Stab Rear Spar

After squaring the rib against the spar, the

bottom hole was drilled and clecoed,

and then the in-between holes were

drilled.

Note that the view here is from aft, with top of assembly to

top.

This same procedure was used to locate and drill the holes for the

other full rib at the other end of

the doublers.

Summary of Work to This PointJuly 6, 2009

Rudder: - Assembled, in storage- Forward spar drilled for ribs and rivets- Lower doubler drilled for rivets- Upper doubler drilled for rivets- Front horizontal stab attach brackets made- Locate and drill two rear ribs for attachment to spar- Locate and drill nose rib for attachment to spar- Make end rib attach brackets- Locate and drill end rib attach brackets- Locate and drill horizontal stab front mounts- Finish drilling holes in end brackets for forward stab- Locate and drill upper and lower doublers to rear spar- Locate and drill rear ribs to rear spar

Tail: - Locate and drill full ribs to rear spar

Tail: - Trim forward spar end brackets to match curve of full rib at meeting point

Done

Done Here

Next Up

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