Quote:
Originally Posted by YvesCH
Do you have a Picture of the sight gauge? Where can we find the instructions?
Thanks,
Yves
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I'm sorry I didn't take any close up pictures during the construction of the sight gauge but here's a picture of it in use. (Well not actually in use at the moment the picture was taken as I was flying formation on the T-6 camera plane during a loop.

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Materials include 1/4 x 1 inch strap aluminum for the support legs. A 1/2 inch round tube for the main shaft, a couple of carbon fiber arrows from WalMart, a short length of #10 threaded rod and a short piece of 1/2 inch wooden dowel. Four plastic bushings, 3/4 inch long with 3/16 inch holes and four AN-3 bolts are used to secure the assembly to the wing tip rib.
The arrows are cut to length and joined with the threaded rod. The dowel is carved to a point by spinning in a drill and formed with course then fine sandpaper. Cut holes in the 1/2 inch tube to fit the arrows, fit the dowel in the end of the tube and fill the tube with epoxy to set the arrows and dowel in place. Cut the 1/4 x 1 inch straps to fit and secure to 1/2 inch tube with screws. I added some wire to this attach point as well. Paint as desired. Fit the entire assembly to the wing end rib with AN-3 bolts (2 per strap). You will need bushings to extend the assembly to fit just clear of the wing skins.
You will need to cut two recesses in your fiberglass wing tips to clear the straps. I found that mounting the sight gauge parallel to the canopy sill works well. Fore and aft placement is done by observing where the horizon falls when established in a vertical up line. A piece of tape on the wing tips and several flights may be required to get this placement correct.
I built my sight gauge in one day but if this is too much for you a few pieces of automotive striping tape on the canopy is an easy and cheep alternative. I used that for years before building the sight gauge.
Here's another picture where you can see how I used the safety wire to augment the screws that hold the assembly to the support legs.
Close up
Let me know how yours turns out!