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Weighting an Arrow

1803 Views 13 Replies 9 Participants Last post by  Lewism, 
C
Trying to get the weight and FOC up on my arrows, Incidious by Trophy Ridge. Regular threaded inserts will not work as the arrow insert is to small for the OD of the brass weighted insert. Is there any reason that the weight cannot be added to the inside of the arrow, as long as it is held at the front end? Thinking of using hot glue on the end of the last weight, dropping it down the shaft and using a rod to push the hot glue down around the last weight. Not sure that would take the thrust of shooting the bow though. Any thoughts. I need to go up at least 35 gr. in weight.
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O
Easy answer is just shoot a heavier point/broadhead....
I know Goldtip makes a screw in weight system for standard inserts( dont know if crossbow inserts have the threads on the back side)....you can buy brass weights in 10gr. , 20gr., and 50gr. I have the long allen wrench needed to install the weights into yhe nock end of the shaft down into the back of the insert and some weights. I bought it a couple years ago to find my ideal point weight while bareshafting my trade bow setup....
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Gabowman
Like said....easier to add a heavier broadhead. There's lots out there that weight up to 150 grains and even more.
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C
Problem is when I bought this bow it had a dozen of the Incidious arrows and 8 of the NAP Max mechanical with it. Your right as far as going with the heavier point but trying to get at least some use out of what I have on hand as it is still new for the most part.

Was going to add the weight to the back end of the point insert. Hole is drilled through but not threaded through. So will have to attempt to drill the through hole to the right size and then tap it out without ruining the shaft or insert.
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C
I worked - drilled the insert out with a #29 bit. Then taped it with 8-32. Didn't take much to hold the shaft as the insert was aluminum. Only about 1/8" to drill & tap. Got the weight screwed in from the nock end with the mechanical installed it weighs out at 419 with a FOC of 17%. Will do the rest the same way and match them up in groups of 3 or 4. Will definitely re-sight the bow to see what difference this change will make.
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C
Have all 10 arrows weighted, weighed and ready to go. Between the 10 they ranged from 414 on the light end to 419 on the heavy end with the majority at 416-418. Just came in from shooting a few. At 30 yds was hitting a bit low and to the right. Couple adjustments and they came in dead center, off a rest of course. All of the arrows I shot entered the bag straight in and was glad to see that. They looked like they were flying straight with no wobble. I used Super Glue this time so will see how that works out. Shaft was prepped the same way so should work.
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Stalker
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chiefsfan said:
Trying to get the weight and FOC up on my arrows, Incidious by Trophy Ridge. Regular threaded inserts will not work as the arrow insert is to small for the OD of the brass weighted insert. Is there any reason that the weight cannot be added to the inside of the arrow, as long as it is held at the front end? Thinking of using hot glue on the end of the last weight, dropping it down the shaft and using a rod to push the hot glue down around the last weight. Not sure that would take the thrust of shooting the bow though. Any thoughts. I need to go up at least 35 gr. in weight.
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I'm not familiar with those arrows. I added some screws to the back of some 110gn inserts. Gave me about 13 extra grains. That and a 25 gn heavier head gave me about 38 more grains

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B
I've been checking accuracy out of my crossbow by adding point weight. Killer Instinct recommends a 425 grain arrow for my bow and I was at 405 grains with the bolts I was shooting with 100 grain point. So, I was looking at either going to 125 broadheads or adding insert weights. I had some PDP weights I used to mess around with my vertical bow, so I added 30 grains and shot today. Worked really well. The pic is at 45 yards using the 50 yd reticle. The extra weight tightened up my groups. I have a dozen 100 grain heads so adding the weight to the insert, for me, is the best way to go.


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Mario Luna
Good afternoon, how are you doing? To increase the weight of my darts I add 4 washers at the tip that give me 27 more weight grains. My darts weigh 512 grains in total with a tip of 125 grains. Well I accompany a photo in case someone serves.
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Mario Luna
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Mario Luna said:
Good afternoon, how are you doing? To increase the weight of my darts I add 4 washers at the tip that give me 27 more weight grains. My darts weigh 512 grains in total with a tip of 125 grains. Well I accompany a photo in case someone serves.
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A nice suggestion.
Thanks for sharing.

All the best.
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mechmark
i had this issue when building some arrows fpr my old crossbow.....8 removed the plastic insert an took some aluminum inserts and drilled and tapped for 8 x32 threads and added washers to the screw and screwed it the back end of the insert til. i got the desired weight and f o c added some superglue to the threads
and then glued my new [custom} inserts in and it worked like a champ!
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Mario Luna
Hello friends of crossbow nation I am currently shooting with 20-inch darts Full metal jacket, with 125 tip and predator inserts, with a total weight of 515 grains. At 45 meters they stick one inside the hole of the other. very accurate I hope it serves.

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I’m still in the market for a proper scale to measure properly the bolts


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