On Mon, 22 Mar 2004 08:02:25 -0500, " jls" wrote:


Ron, the wood spar dimensions for the BC12D model Taylorcraft are as
follows:

The front spruce spar measures ¾ inch thick by 5-11/16 inches tall

The rear spruce spar is 5/8 inch thick and 4-3/8 inches tall.

Thanks much, this helps. The single-seat Fly Baby spars are almost exactly
the same, except the aft spar is 3/4" like the front. No one is sure how
much margin is in the spar itself, though an entire wing was static-tested
to 6Gs in Finland. The gross for the two-seat Fly Baby is about 500 lbs
higher; the need to upgrade the bracing wires was obvious, but the issue
about the spar thickness wasn't.

Thanks again....

Ron Wanttaja