fletching angle

[pyroarch57]

Yes, i noticed this a long time ago. it bugs me but i`m not forking out for another fletching jig!

[wingate_52]

I thought it was me. I am definatly not happy now. Any solutions apart from sending it back?

[Cimbian]

Originally Posted by joetapley

If I understand you comment correctly then the fletching angles are conventionally correct. The angle between the two fletchings facing the bow is made larger than the other two angles to increase clearance between flletchings and riser. This approach originated with wooden bows and with modern bows it probably doesn't make much difference between iso and equi arrangement.

Of course with the iso arrangement the nock has to be lined up with the correct two fletchings or clearance will suffer. That was the point of the "####" feather being a different colour the angle between the "hen?" feathers is larger.

Joe,
I see where you are coming from but there are a few points here:
1. the two hen fletchings are CLOSER together than either of the hen-to-#### fletchings. The odd side of the Isosceles is short and against the riser.

2. The imbalance would probably be okay if there were no spin, but I doubt this would be ideal when spinning. The arrangement is more like the tail of a Harrier aircraft, and these are not designed to spin bullet-like. As I understand it, spin is induced to neutralise imbalance of drag between fletchings.

3. The purpose of the #### fletching being a different colour was, I thought, merely to reduce the chance of nocking 180 degrees out, which, of course, would cause the #### fletching to strike the bow. Thyen again, being wrong is something I am good at, so may well be here.

[joetapley]

the two hen fletchings are CLOSER together than either of the hen-to-#### fletchings.

Ah! problem. Looking at a photo nock position probably determined by a spring loaded ball bearing engaging detentes in the rotation nut. Guess would be detentes incorrectly drilled. Get a replacement nut only solution. (Temporary fix remove ball and fit friction washer).

[Cimbian]

Originally Posted by joetapley

Ah! problem. Looking at a photo nock position probably determined by a spring loaded ball bearing engaging detentes in the rotation nut. Guess would be detentes incorrectly drilled. Get a replacement nut only solution. (Temporary fix remove ball and fit friction washer).

Joe, this too was my conclusion but I wondered if I had missed something along the way and there was some design element I had failed to understand (this is the only jig I have ever owned).

[pyroarch57]

I have the nut for compound fletching and thats just the same

[pyroarch57]

Originally Posted by wingate_52

I thought it was me. I am definatly not happy now. Any solutions apart from sending it back?

I`m not happy either!!!

[Cimbian]

Interesting... Anyone think this needs a poll?

[pyroarch57]

It Sure Does!!

[jthain]

I had this problem that you are experiencing and found it really frustrating but managed to cure it with a bit of fiddling about.
On your jig is there two grub screws close together on the large collar that holds the rotating bit?. If so release the hexagonal screw that secures the rotating part and it comes out. I found that there were two positional collars inside, each has a ball bearing on a spring to push them into holes set into the collars that operate as you turn the rotating part but only one has a setting for three equally spaced holes for the ball bearing to fall into. I discarded the one with uneven settings and put back the one with the equally spaced settings and it worked fine.
Hope you understand this.