Sunday November 27th, 2005|
Continued Cabin Frame Work
Continuing with the cabin frame...the plans don't really give you can exactly location for and aft where the cabin frame should be. It's just sort of implied that it should be flush with the seat back brace. Anyway...I measured at that point and got a little short of 42.5. When I clamped the outter cabin frame brackets into place as seen in the picture, the measurement for the cabin frame should be about 42 1/8. The plans show the 'ideal' measurement for the cabin frame to be 42 5/32...which is just 1/32 over what I measured...so my fuselage width is within 1/32 of Van's design. I can't take any credit there...it's a great kit.
The cabin frame needed to get trimmed down just a bit. I ended up having to take about 1/4 off the left and right parts. I actually took 1/8 off each part twice because I was proceeding a bit cowardly.
Next you drill this plate to the aft two halves. You can see that I drew some reference lines on the plate and on the channels to ensure that everything was straight.
None of these parts are pre-punched. These are apparantly the same exact parts that come with the RV-6. The plans don't give you a spacing here...they just tell you that the maximum spacing is 1.5 inches...so I measure the distance of the channels and devided the distance by the number of fasteners shown in the drawing to get the spacing. For me it worked out to 1 1/3, which is obviously less than 1.5 so I'm good to go.