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Dave- Back to your question on the axle wing. You are right, they were solid olive to a line below the leading edge of the wing. to me it looks like two pieces of plywood meet at this line. Here is a photo of F.I 102/17 showing the color demarcation line. It is identical to Dr.I 198/17, of which good photos are available.
Bucky- Sorry for going off on you. Much too strident on my part. If I get to the UK (my daughter lives near Dartford), I will buy you a beer.
Alex- Always fun, is it not? There was only one Fokker Triplane at the front on 23 September 1917. The next one delivered to the front was to Gontermann in late October. We know where they all were. The standard lapse rate for temperature is ~2 deg C per thousand feet. At 12,000 feet that is 24 Deg C colder than on the surface. That is 43 degrees F colder than on the surface. If it was 65 degs F on the ground, it was 22 degrees at altitude. Add a bit of wind chill to that and nobody was flying around without headgear.
Taz
Terry Phillips
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