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How do you control or modify hand shock in an otherwise efficient bow

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Woodbear:
Thanks for the thoughts on dealing with the hand shock.

It is not that the hand shock is severe, a bit of a push or bump is normal (for me at least) and OK, it’s the feel of vibrating is annoying.

The feel of vibration is there with 353 grain to 519 grain arrows.

I am shooting with two fingers, one over and one under the arrow. I started doing this when the third finger got arthritic. Now all my fingers are arthritic, but I have kept the two-finger style anyway.

The string is endless loop, 12 strands of B55. I have 2 strings, one with monofilament nylon serving at the arrow nock, and one with no serving. The serving did not alter the vibration, but does make the arrows clip on to the string.

I tried flipping the bow over, and the feel is the same. However, I am always holding with my hand pressure point dead center. This places the arrow pass (arrow centerline) at 0.60” above the bow center.
The idea of shifting the pressure point is something I have not tried and sounds promising.

Slow motion video sounds like a great idea but beyond my resources at the moment.

To see the relative bend in the two arms I duplicated the full draw photo and overlaid a reversed 50% transparent image on the original photo. The overlaid image is carefully adjusted in angle and position so that the tips exactly overlay. Since both halves of the combined image contain both bow limbs, only one side of the overlaid image is needed for evaluation. At least when I took the photo, the upper limb had about 1 bow limb thickness worth of more bend than the lower.

The bow is indeed quite long for the draw weight. I am trying to get both a 30” draw and a low strain light-ish weight bow, so I can hand it to people un-familiar with wood bows (read that compound & Barebow style glass/carbon recurve) to experience a “real” bow without worrying about over-drawing. This is why the vibration is annoying me, I want a smooth shooter to entice the over-complexified modern archer.

Sleek,
Good to hear that an old acquaintance is still makin bows & posting on line.
I am doing fine, and enjoying semi-retirement. I have had a bit more time for bows of late.

Dave

bassman211:
72 inches long, bend through riser, B55 string, wood choice, and a light arrow may all be contributing to felt hand shock.  Slightly shorter bow, padded handle, FF string,  heavier arrow, and wood choice could help, and maybe narrow the taper towards the tips. 

Eric Krewson:
With a bow that long and a B-50 string it could be the string stretch at the shot is causing the vibration. Try a DF-97 string, I use them on all of my selfbows, I don't like the mushiness of a B-50 string.

Jim Davis:
In my experience, hand shock disappears if the bow is supported without GRIPPING it.

bassman211:
Yep that helps.... I shoot all bows with just my thumb , and index finger. Just last year I made my son a shorter sinew backed Osage bow that held 4 inches of reflex, and forty lbs at his draw for ground blind hunting. I tillered the bow for thumb ,and index finger shooting. Not thinking that he shoots a really low wrist grip. It went bad out of tiller, and  the top limb broke. I  made it a bend through riser, and had to put an 8 inch splint  on the belly of the broken limb with more sinew on the back to get it shooting again. I made him another one, and got it right for his shooting style, and he won't get to shoot this bow ever again. It is made for me. Looks like sh<<, but shoots good.

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