Arrow induced vibration

[panikos]

Using redline and acc arrows. When using the redlines the bow doesn't vibrate and feels nice and smooth. But when using the acc the bow vibrates. Not badly but after about 6 dozen arrows my bow arm tingles from the bow vibration. Just tried a top mounted doinker which seems to cancel the vibration.

Both sets are tuned to the bow. Shooting both sets last night indoors (15 yards) and both sets landed all together in exactly the same group. Unfletched arrows for both sets again land at the same place (5cm to the left of the fletched ones in the same horizantal plane).

Anybody shed some light as to why the bow vibrates much more with one set of arrows than the other???

[buzz lite beer]

the simple answer to this is you are must be holding your bow for these vibrations to transfer to your bow arm! After the shot the bow should be hanging on your bow sling, but as to why your bow vibrates more with one set than with the other, will undoubtedly be down to weight and construction of the arrows, heavier, thicker walled arrows absorb more energy than lighter ones.

[geoffretired]

If one set is heavier than the other I would say the extra speed with the lighter ones was the cause. I'm not sure from what you wrote, whether the same sight marks were used;if that's the case it would seem the speeds are equal.
The other thought I had is to do with the bend put into the arrow during the power stroke, and the string path generated by the arrow at that time. If one set bends more or at a different rate, that could effect how the string vibrates when the arrows are released from it.Can you hear any difference between the two sets? What you hear is usually the string vibrations.

[panikos]

I'm not holding the bow. It rests on the fleshly bit between thumb and index finger. After release the the bow swings with the bottom limb almost all the way to my chin
Both sets use the same sight marks. The ACCs are lighter and seem to be faster. They sound completely different. The redlines have a low sound whereas the ACCs have a "snappier" sound to them; more like a cracking sound.
The top mounted doinker seems to have reduced the vibration but they still sound the same
To be honest I prefer the redlines to the ACCs. I only got the ACCs after everybody at the club kept saying I can't use redlines at other clubs.

[buzz lite beer]

Can you or anyone else shed some light as to why the vibrations of a bow you're not holding causes your bow arm to tingle.

[geoffretired]

The sight marks are the same for 15yards, but at longer distances I think the slower arrows would show up with a lower sight mark. I think the sound says they are different, the crack is more likely to come from vibrations that you would notice in the arm.
As for the tingling in an arm that is not holding the bow; I can only guess that there is contact between hand and bow but not necessarily a holding contact.
Like feeling buses going past through your feet.
No, the buses are not going through your feet;they go over them if you stand too near the kerb.

[panikos]

Originally Posted by buzz lite beer

Can you or anyone else shed some light as to why the vibrations of a bow you're not holding causes your bow arm to tingle.

I don't know

The sight marks are the same for 15yards, but at longer distances I think the slower arrows would show up with a lower sight mark. I think the sound says they are different, the crack is more likely to come from vibrations that you would notice in the arm.

The sight marks are the same upto 70m (not shot more than 70m yet).

[geoffretired]

So the weights seem to be more or less the same; I think I would go back to the idea that different shafts have different vibration patterns which cause different string paths resulting in different vibrations left in the string on release.

[BowSurfer]

You might try tweaking the bracing height. Different arrows will require retuning and the first essential of tuning is to adjust the bracing height to the setting that shoots smoothest or quietest.
You pobably aren't far away so try adjusting in 5-twist steps either side of your current setting and see if that makes them shoot smooth and sweet.