Rib prep is complete. You’ve seen pictures of fluted ribs before, so I’m not gonna waste my disk space and your bandwidth on one.<\/p>\n
One thing to note here – the fluting process tends to bow the flanges back out a bit. Although the wooden flanging tool puts the flanges right at 90 degrees, I wound up bending the flanges a little past 90 with my hand seamer so that they popped back out to the right position. If I were building that flanging tool now, I’d modify it to put a little extra bend in the flanges to avoid all the extra manipulation with hand seamers.<\/p>\n
Before the main ribs went on the wing, I drilled holes for electrical wiring conduit using one of the locations recommended by Van’s<\/a> – in particular, a 3\/4″ hole on the lower portion of the web between the first and second lightening holes.<\/p>\n If you choose to use this approach, beware that Van’s only depicts the hole locations on inboard ribs – the ones with “D” shaped lightening holes up front – and you’ll have to do a layout for the outboard ribs as well. Once I had a pilot hole laid out on all three types of “L” and “R” ribs it was easy to cleco one of those ribs to its opposite – an “L” rib to an “R”, and vice versa – using the tooling holes, and simply match-drill in preparation for opening the holes to 3\/4″ with a Unibit. My conduit holes came out fine, and were lined up well enough to accommodate Van’s flexible corrugated tubing.<\/p>\n","protected":false},"excerpt":{"rendered":" Rib prep is complete. You’ve seen pictures of fluted ribs before, so I’m not gonna waste my disk space and your bandwidth on one. One thing to note here – the fluting process tends to bow the flanges back out … Continue reading