Joined
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125 Posts
Hey guys,
I've switched to slightly longer arrows recently - 570 ACE cut to 29.5 inch shaft length. I was shooting 28.5 inch (shaft length) 620 ACE.
I have an issue or concern. I'm getting slight scuffing on the rear node, which I assume is from plunger button contact with the shaft as the arrow leaves the bow.
Arrow flight is most excellent though, and the bare shafts are with the groups. Still, I have these *very slight* scuffs on the rear of the shaft (in front of fletches) that indicate contact with the button. I can rub these scuffs off with my finger, but sure enough, they more often than not appear again after the arrow has been fired.
I was under the assumption that there should be no contact at the rear node upon release of the arrow. Am I missing something basic ... ie; is the arrow spine too soft? Or perhaps I've got the plunger set up incorrectly. It's at or close to center-shot, medium spring beiter, backed off to a relatively soft feel.
For a solution, can I correct for the rear contact by changing center-shot plunger position to either slightly left of or right of centershot, and also adjusting spring tension?
Or, do I need stiffer shafts? If so, it's $300 down the drain for the most recent 570 ACE purchase. I'm getting subjectively very good arrow flight with these though, and bare-shafts out to 50 yards are with the shot groups ... this is why I'm very stumped.
Any insights are more than welcome. I thought I knew quite a lot about tuning, but something here is not right.
Tori
I've switched to slightly longer arrows recently - 570 ACE cut to 29.5 inch shaft length. I was shooting 28.5 inch (shaft length) 620 ACE.
I have an issue or concern. I'm getting slight scuffing on the rear node, which I assume is from plunger button contact with the shaft as the arrow leaves the bow.
Arrow flight is most excellent though, and the bare shafts are with the groups. Still, I have these *very slight* scuffs on the rear of the shaft (in front of fletches) that indicate contact with the button. I can rub these scuffs off with my finger, but sure enough, they more often than not appear again after the arrow has been fired.
I was under the assumption that there should be no contact at the rear node upon release of the arrow. Am I missing something basic ... ie; is the arrow spine too soft? Or perhaps I've got the plunger set up incorrectly. It's at or close to center-shot, medium spring beiter, backed off to a relatively soft feel.
For a solution, can I correct for the rear contact by changing center-shot plunger position to either slightly left of or right of centershot, and also adjusting spring tension?
Or, do I need stiffer shafts? If so, it's $300 down the drain for the most recent 570 ACE purchase. I'm getting subjectively very good arrow flight with these though, and bare-shafts out to 50 yards are with the shot groups ... this is why I'm very stumped.
Any insights are more than welcome. I thought I knew quite a lot about tuning, but something here is not right.
Tori