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This letter from the PFA, the British version of the EAA, concerning  seatbelt installation was sent to Pietenpol builders in the UK. 

UK Seat belt Letter 1.JPG (213646 bytes)UK Seat belt Letter 2.JPG (210353 bytes)UK Seat belt Letter 3.JPG (49273 bytes)UK Seat belt 1.jpg (93725 bytes)UK Seat belt 2.jpg (117968 bytes)UK seat belt 3.jpg (111976 bytes)UK Seat belt 4.jpg (124951 bytes)UK Seat belt 5.JPG (127605 bytes)

The front harness support they talk about looks like this when installed

UK Frnt harn frame.jpg (17213 bytes)

 and here is a shot of the rear shoulder harness attachment points

Rear seat upper seatbelt attachment.jpg (74992 bytes)

Bill Rewey attached his front shoulder harness to a strap between the upper cabain supports

bhead050005.JPG (73479 bytes)


Oscar Zuniga Front Cockpit Shoulder Harness Attach Point

This is the shoulder harness attach point that I fabricated for the passenger cockpit on NX41CC. It follows a detail and concept that I saw in the BPA Newsletter but I tweaked things a bit. The essential part is the clamp on the cabane X-brace wires. I took two hardwood (ash) disks, clamped them together in a fixture and drilled a hole right through the center, through the joining line, on the drill press. Then I rotated the two pieces so that the groove on each disk captured one of the X-brace wires, measured and drilled two through-holes for the legs of a stainless steel U-bolt (hardware store), painted it, put some black electrical tape on the X-brace wires where they crossed, and assembled the whole thing.



On the backside you can see that I used a piece of flat stainless to back the nuts up, then used stainless locking nuts to hold the whole thing together.


My shoulder harnesses are the Y-type with a single attach point, so they work fine with this single point of attachment. Not sure how this would work with individual shoulder harnesses. Oh, and pay no attention to the V-groove that is cut in the top of the wooden disks... when flying solo it is simply used as a sighting point for homing in on my targets ;o)



Here is the setup that Corky had on the airplane originally. A piece of cable was run between tabs at the top attach points of the cabanes and the shoulder harness was clipped to the cable. It may have been just a wee bit more comfortable for the front passenger since it put the apex of the Y a bit farther from the neck, but either setup will work. I'll fly the new setup for a while and see if it obstructs my forward vision or creates any other problems, and I've left the attach tabs for the other setup in place in case I decide to go back to the cable rather than this U-bolt setup.