I've tried a different ways w 2.5-inch feathers.
Started w straight 75*-105* They flew straight, but everybody thinks that (like the road racing cyclists) ya gotta spin to win.
Next was 90* R offset.
Wanting to try helical, I moved the feathers another cm or so (for those of you still using the measuring system from the previous millennium that's half an inch) away from the nock, which puts them further up (or down, depending on your reference point) my Bitz RW clamp.
Then I dialed in as much offset as possible while keeping all of the feather base on the shaft. Depends on the arrow thickness of course... Easton Powerflights lately. GT Expedition Hunters are thinner. 1915s seem even thinner, altho I haven't put calipers on to measure.
So I've no idea how many degree offset I have. Thing is I've gone from straight to as much helical and offset as I can get, and I think that's where I'm gonna keep it until I think of, or somebody shows or tells me, something else to try.
The short feathers I use are less expensive than most vanes, and it doesn't take a lot of feather to steer an arrow. Plus since I'm fletching for longbow and recurve as well as compound, I'll likely stick w buying only feathers; I buy at least 100 at a time.
