"Lou" wrote:

I have just started to assemble my wings on my all wood aircraft. There
is a box spar in the front and a 3/4" thick spar in the back. Although
this will no dought hold together, it only calls for 1 diagnal brace on
each wing. I glued temperary
diagnal braces on the inside to hold while I start to cover. This has
added an extreme amount of strength. Now that I've led to the big
question. Since this will add only 1lbs to the airframe, does anyone
think it would be a good idea to keep the extra bracing? Or make the
frame too stiff?

As others have pointed out, "be careful".

Think of this extreme example...

Say you have a 10' piece of 1" OD PVC pipe, and one end is anchored
firmly, and a weight of plus and minus 10 pounds is applied to the
other end a thousand times a day. Not hard to imagine what happens -
lots o' flexing.

Now take a 9.8' piece of steel 1" ID water pipe and slide it over the
PVC pipe and apply the same loading. In short order you'll have a
broken piece of PVC pipe at the anchored end.

Mark "and you don't wanna break your PVC in flight" Hickey