Originally Posted by
airlina
As per a few requests here are some photos of the "dutchman clamps" that I used for the battery tray adel clamp failure as previously post in this thread. For some poor quality photos of the before and after repair search this post on the forum: "SS with continental engine battery placement". The clamps are simply made from 4130 tubing that is sized by measuring the O.D of the structural tube you want to clamp on to, then going to aircraft spruce and finding the tube with an I.D. to fit around that tube. Two 4130 tubes are then welded perpendicular to the clamp tube to accept the AN3 bolts I used to clamp it together. I then spilt the whole shebang in half with a dremel fine metal cutting disc. They are incredibly strong and clamp tightly to the tube with no slippage. As you can see in the photos I added a tab to one and used it for my homemade trim assist kit. Also used for header tank , A/P servos and the battery tray fix. I've been told these were used on many WWII aircraft like the B-17 , so good enough for my Kitfox. Bruce N199CL