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Thrumming Bow???

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George Tsoukalas:
That  noise you heard  is usually a sign of stiff arrows or too low a brace height. The brace height seems good.  You may have lost some  bow weight from the moisture. Try a lighter spine or a heavier point. Jawge

paulc:
thanks all for the input...gotta love archery.  Multiple answers all of which probably have some truth in them :-(  I did just the other day tighten the string which changed the brace height which would have changed the relationship of the sting to the recurves.  So that makes sense.  I shot the same arrows yesterday after work out of an osage bow (purchased).  No noise but the bow pulls a bit more than the hickory.  And no recurves.  So maybe the arrows match the bow better maybe the lack of recurves is the answer...And yeah, the limbs may just be out of balance.  But I swear it didn't use to make noise.

Thanks WB on the compliment-the handle is too long but it is my first successful bow so it is "special".

I will shoot some more with the osage and if I can hit consistently maybe I take that into the woods this fall.  Not sure a thrumming bow will help me make a clean shot.

Thanks, Paul

bradsmith2010:
you could put some fur silencers where the string is hitting the bow, the strumming will stop.. but then the music will stop..

bownarra:

--- Quote from: paulc on August 24, 2022, 11:00:22 am ---thanks all for the input...gotta love archery.  Multiple answers all of which probably have some truth in them :-(  I did just the other day tighten the string which changed the brace height which would have changed the relationship of the sting to the recurves.  So that makes sense.  I shot the same arrows yesterday after work out of an osage bow (purchased).  No noise but the bow pulls a bit more than the hickory.  And no recurves.  So maybe the arrows match the bow better maybe the lack of recurves is the answer...And yeah, the limbs may just be out of balance.  But I swear it didn't use to make noise.

Thanks WB on the compliment-the handle is too long but it is my first successful bow so it is "special".

I will shoot some more with the osage and if I can hit consistently maybe I take that into the woods this fall.  Not sure a thrumming bow will help me make a clean shot.

Thanks, Paul

That is what happens when the bow isn't 'bedded in' properly. it can be fine for 50 shots then drift out of tiller. I've been doing this a long time. Nothing to do with recurves. Highly unlikey to be the arrows making a thrumming noise...arrows are either silent or if they are far too stiff you will hear a crack/whack/thwack noise when it hits the side of the bow. there would also be a mark at the arrowpass. Shooting heavy arrows will quiet the bow down, too light an arrow is obvious....but all that stuff is bandaid. Sort the tiller out. To confirm wether it is a tiller issue - post a photo of it unstrung, one braced and one at full draw. Even with the limited info going for the diagnosis I'd put money on your lower 'coming around' with shooting ' settling it in'.

--- End quote ---

George Tsoukalas:
bownarra, good point. The stave should be exercised 10 times or so after wood removal to register the changes.

You say there is a difference between a thrumming noise and a thwacking noise (stiff arrows, low brace). If yes, I've never heard it and I've had bows change tiller.

Jawge

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