Wood arrow conversion woes....

[Rossco7002]

I'm working on some test arrows before ordering a couple of nice custom sets for my longbows. Having said that I can't get my woodies to fly right for either bow.

I draw 26.5 inches and the two bows are a Schulz Granpa (68@27) and a HH Half Breed (52@28). The Schulz is 1/4 from centre and the HH is 1/16th (excluding strike plate).

I can get bare shafts flying straight but when I fletch them up the arrow strikes the riser on release and flight is horrible (particularly with broadheads).

On the calculator My woodies also match the spine of the aluminiums I was shooting with good results.

The two setups I have are:

40-45 arrow with 125 point for the Half Breed and 60-65 with 190gr point for the Schulz.

What's going on? Am I missing something?

[ddauler]

Really hard to say. The woodies are probably larger diameter than the aluminums. My experience has always been shafts that are too stiff hit the side plate. Also when I used to bareshaft I always ended up with arrows too stiff. Probably a result of shooting form changes when bareshafting vice normal shooting. Check the nocks to make sure not too tight and raise nocking point work it back down.

[AngelDeVille]

Sounds like you are under spined, what length are your arrows?

The heavier point on the heavier bow is weakening spine even further.

[Mike Most]

You also may want to try shooting cock feather in, it will (may) (should) give you better clearance on release..  

[Rossco7002]

Arrows for the Sculz are 28.25. I have only cut 1 arrow for the HH - 28 inches. Both these setups match my aluminiums on the dynamic spine calculator which has always worked well for me.

I haven't tinkered with nock height as I was getting good arrow flight previous.

I anticipated the same dynamic spine in wood would perform the same as its aluminum counterpart. This held true for me when switching back and forth aluminium to carbon don't know what's going wrong here.....

[magnus]

Adding feathers makes the shaft a hair stiffer. When I bare shaft I get them a tad weak and add feathers.