I don't like the spirit level on a bow sight. It's important to keep the bow perpendicular to the ground. However, keeping your eye focus on the tiny bubble 20inches away, then change your focus to the target 20 yards downrange is such a tedious task. And it takes time.
- Let's scrub the spirit level.
- I use a hinge to suspend the ring on its axis. Now it's kinda like a pendulum. If you camber your bow, the sight will lean with the bow.
- The two "wings", I call stopper, prevent the ring from going too far out or swinging uncontrollably (if you draw your bow from a weird position). They also give a clearer peep picture of how much you are leaning your bow. Also mind that strong cross wind can blow away your ring. If you think so, make yourself a full circle stopper. I'm lazy man.
A Few Thoughts
- This is somewhat a "one stone two birds" kinda thing. The sight tells you your bow is leaning but you can actually just ignore this information and take the shot. The ring-and-pin will always stay perpendicular to the ground, which is exactly how your arrow will fall - perpendicular to the ground. Get it ? :P Gravity don't lie.
- I made a mistake and built the measurements around M3 bolts. Parts turned out way smaller than expected. Should've done with M4. But hey it's only my second 3DP project. Maybe it'd be fine if it was milled out of aluminium?
- If I had some miniature bearing to use for the hinge, the swinging motion would be much smoother. Right now the parts I printed with my reprap feels really flimsy.
I first wanted to make a quick prototype with just a Z axis adapter to my Trophy Ridge knock off. But I ended up making the entire rig with adjustable elevation and windage scale. Enjoy!
- You need some M3 * 20mm and nuts to assemble the parts.
- Some random parts are the adapter for Trophy Ridge.
- Use an allen key (sized appropriately) to push through the socket for the M3 hex bolt if that socket is too tight.