Fine tuning technique

[AndreasLundin]

So I got my new bow and arrows tuned pretty well. I can shoot bareshaft and fletched arrows in decent groups out to 20 m. If anything I might have a fraction of a nock low if anything. Anyhow I did a lip stick test with different fletching configurations.

High profile 4 fletch 90 degrees
High profile 4 fletch 105 degrees
High profile 3 fletch
Low profile (1/8" lower) in above configurations.
Vanes in 3 fletch.

Anyhow, best for me was cock feather in on 3 fletch but I had a fraction of contact still. Doesn't affect arrow flight with field points. I could even shoot vanes to same POI but slow motion showing a small flutter.

So should I bother tinker any more? Would I be able to get better clearance?

My thought was to build out the strike plate with 1/16" more to increase the paradox and hope that the increase arrow stiffness would not change POI.

Bow specs are:

Dryad Orion ACS RC #66 @ 28" (shooting 28.5") I have put an 1/8" leather piece under the shelf and about 1/32" under the strike plate. Covered with Velcro.

Arrows are BE Rampage 29.75" carbon to carbon with 80 grain GT insert and 250 grain tip. 670 grains

Brace height for the moment is 7 7/8"

I would love getting to a point when shooting low profile vanes would be an option (for downpour and walk in hunts)

First video is slow motion with feathers, second vanes at 20 m

 

 

[Chad Orde]

I would say keep at it sounds like you are close to achieving what your bow arrow set up requires for a forgiving tune.

[old_goat2]

Shoot some broadheads, that will tell you if your good or not on tuning. What spine arrow are you shooting?

[katman]

You may try putting 50gr less point weight on to confirm a stiffer dynamic spine would help and if so then build out side plate. Also a slight brace height adjustment may help.

Can you fix the nock low with a nock point change? I would do that first as it may fix your problem.

[AndreasLundin]

Yes, I will try to raise the nocking point with 1/32" or so and see it goes. Spine was determined with cutting shaft and shooting bareshafts. Full length was very weak, 30 1/4" shaft was weak, 30" ok'ish and 29.75" flew great.(more hits weak that stiff) I am shooting .250 spine.

I don't think spine as such is an issue more so that getting the arrow pointing more left may help induce a stronger archers paradox hence clear the fletched a bit better. I am guessing that only 1/8" or less of feather is touching I get a fairly weak reading of lip stick.

Does brace change the archers paradox? In that case should I try higher or lower brace for better clearance?

[katman]

Does brace change the archers paradox?

Yes, lowering brace height makes then arrow act stiffer in my experience.

I would try increasing the brace 1/8" and check clearance again, easy to reverse or try lowering it.

[Medley]

Just want to say "great job" putting in all of the effort.