Re: Lockdown :(
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The douglas fir ply called up in the plans is a very common construction ply in the States and very affordable. Gus used this in his BG designs not for the strength but to get a good contour that doesn't get the 'starved horse' look with age.
The three of us in NZ that started building BGs imported DF ply from the states but when we received and inspected it decided it was not fit for aircraft use as it had quite big gaps in the inner ply and inlays where knots had ben cut out... Knowing what I know now, this was quite normal for that ply and unless you hand-picked each sheet you bought, this was the nature of the animal.
Maybe Gus had a better source of ply for his kits? Anyway, our CAA approved the substution of readily available Island Kauri marine ply for skinning. We knew there was a weight penalty but the quality of the ply was excellent.
The BG12-16 design all up weight limit is 850 lb so cockpit load for mine is still good at 96kg, plus another 12kg if I remove the fixed ballast weights, givjng 108kg.
On Sun, 19 Apr 2020, 23:27 Scott Johnson, <s_johnson@...> wrote: