Seat Back Adjustment Brackets on F-705   August 29th, 2010

The seat backs have a clever two-position adjustment mechanism.  The top of the F-705 bulkhead has two slots.  A tab that holds the seat back can be adjusted to one of the two positions depending on how much you want to lean back.

The first part of making this part of the bulkhead was to put a very slight bend on the two F-705K aluminum strips that act as guides.  This was a good excuse to buy a little bending brake from Harbor freight.  It is as simple as it gets, so I figured this one thing from Harbor Freight would be OK :-).

I clamped the F-705K aluminum strip in place, and started cranking on the brake.  Just a little at a time to get the right bend angle.

Here is a closeup of the F-705K after the bend was complete.

The next step was to take the F-705L shim and match drill it to the top of the bulkhead.

Then came the tricky part.  The F-705J angle has to be drilled to the side of the bulkhead, but has to sit 1/8″ from the top surface (refer to the drawing at the top of the post).   I used some 1/8″ angle as shown below just to the set the right distance.  After the F-705J was drilled and clecoed in place, I simply pulled out the 1/8″ angle.

Finally, here are two shots of the entire assembly clecloed together.

This entry was posted on Sunday, August 29th, 2010 at 1:46 pm and is filed under Bulkheads, Fuselage. You can follow any responses to this entry through the RSS 2.0 feed.Both comments and pings are currently closed.

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