Baffle air ramps

Tonight I shaped the right hand air ramp.

This required sticking on a paper template, then, following a sequence of bends, shaping the piece until it conforms to relatively smooth curve. It’s a conical shape, so one end is a much tighter radius than the other. I managed to get the shape fairly close, but I ended up cracking the end with the most narrow radius. I stop drilled the crack, then filed out a relief notch to mitigate the risk of further cracks.

I then match drilled the holes into the baffling, and dimpled them. Dimpling the aft most holes was a little annoying because it was too far from the edge to use my squeezer. I used a pop-rivet dimpled instead, which doesn’t give great results, but good enough in this case.

The right air ramp with template glued on
Shaping the air ramp by gently tapping a block of wood against the various marks on the template
After shaping the air ramp
Match drilling the air ramp to the baffling
Match drilling
Match drilling the aft holes was almost impossible given the geometry, so I clecoed the ramp to the outside a drilled the aft most hole