Weight tubes and nocks coming out?

[Bob Stager]

I am thinking about ordering some weight tubes for my axis arrows to bumb up the weight. I was wondering if the nocks will stay in when target shooting? If they tend to pop out,how do you fix this?

[Tim in Wa.]

They will pop out if you hit something hard like a tree

They will pop out on hard hits, and once in a while on soft hits if the nocks are a bit loose. One thing you can try is to pinch the tube every few inches to put kinks in it as you are inserting it. Other than that, the only other solution I know of is to glue in your nocks.

Bisch

[M60gunner]

Bob, are tubes available for those skinny shafts? I used 100 grain brass inserts to increase weight.
This has been some time ago, maybe 6 years. I communicated with OL Adcock about this same subject. He suggested the inserts and footing the shaft. I used 2" of 1917 alum shafting. That and my 150 grain BH's brought the weight up and they fly great. My choice of hunting arrows.

[Bob Stager]

3 Rivers carries them in 3 different weights

[Doug_K]

Originally posted by Bisch:
They will pop out on hard hits, and once in a while on soft hits if the nocks are a bit loose. One thing you can try is to pinch the tube every few inches to put kinks in it as you are inserting it. Other than that, the only other solution I know of is to glue in your nocks.

Bisch

This is what I did when I used them.. Still occasionally popped out on hard hits.

[JimB]

Weight tubes are a pain.First,they are inconsistent in weight.Second,they stiffen the dynamic spine-a lot.This requires more point weight to get them back to tune.And of course,nocks can pop out but that's the least of the problems.

[Longtoke]

what's the benefit of using those tubes rather than something like rope or stretchy rubber tubing?

[Msturm]

I have had much better results with rope. nocks don't pop off and according to my absolutely non scientific observations the rope affects spine less. I was getting some weird stuff with tubes.

I still rope my arrows. As a bonus, when an animal breaks off an arrow inside it, you often find the rope or "blood snake" as my buddy calls em, on the blood trail.

Msturm

[Gil]

Why not try heavier points

[Bob Stager]

I was hoping to pick up the arrow weight without affecting the spine

[AZ_Longbow]

Adding or removing weight always effects the tune of a bow with the arrow. You are changing the weight the bow is pushing. So just in that alone the arrow tune will change. Some times it is less noticeable though. String puffs and locations on the string can changw the tune as well. So imagine the weight of a tube.

[JimB]

It absolutely affects spine.It isn't due to the stiffness of the material used for weigh(static spine.It is because more of the weight is going behind the balance point and weight toward the rear stiffens the dynamic spine.Your balance point is always ahead of center so full length,internal weights put a disproportionate amount of weight behind the balance point.

Adding full length weights also change the position of the balance point.If you have a well tuned arrow,changing the balance point,changes the tune.

Now if you add the full length,internal shaft weight before tuning,that's a different story but it is hard to predict how much point weight it will take to tune the now stiffened(dynamic spine)shaft.