Thanks for your question by e-mail. Please forgive that I have decided to answer your question here on the forum, but it might perhaps be of interest to others, too.
* * * * * * * *I'm hoping you can help me with a question ? I have acquired a project of a Fokker Dr1 ,The wings are complete ,however the attachment points on the box spares have been drilled 2 3/4 inches from top to bottom . The top hole is 3/4 of an inch from the top of the spar and ,the bottom hole is 1/2 " from the bottom of the spar. Is this the correct spacing and does it present any problems with the wing attachment ? *Also any structural problems? *The spacing seem to be consistent with all three wings. *The wing were made about twenty years ago.
Any help would be greatly appreciated as I hope to complete the project .
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * Very Best Regards: *Mark Laurin
Please find attached a copy of the wing fitting as shown on the original Fokker Works drawing No.30050A. You can see the original dimensiones there.
The image below shows you the new wing drawing that we have developed from the original one. It is in the same scale as the original works drawing which was drawn in 1/5 scale.
The holes for the bolts to fix the brackets are of 6 mm diameter.
As you can see these seem to differ from the sources your triplane was constructed from.
Unfortunately I can not tell you much more about your design since I do know nothing of its origin.
I hope this helps you to see how it was done.