Calling all machinist - brass inserts

[Shawn Leonard]

I think the problem is aluminums are a different animal and even in shafts that spine the same as carbons react totally diffrent to weight added up front. I had some .500 aluminums and some .500 carbons and I needed a lot more weight up front on the aluminums to get the same flight as the carbons. 175 on the carbons and 300 on the aluminums. Both were the same length 29.5"s and shot from the same bow. Alsowhy shoot aluminums, they do not hold up as well and they at least to me are noisy at the shot and seem harder to tune tham carbons. Shawn

[Tim Fishell]

Lets not start the Carbon VS. Aluminum debate again!!!

[NorthernCaliforniaHunter]

Given an insert that has a hole all the way through, and given that the hole is threaded all the way through, the following might help:
Find a brass screw of the same diameter and thread pitch as the insert. Get an egg shaped lead fishing weight with the same outside diameter as the inside diameter of the arrow shaft. Drill out the lead weight to accept the brass screw. Insert the screw through the weight and thread the whole thing into the back of your aluminum inserts. Solid, won't move (given you use some lock-tite) and cheap.

[KentuckyTJ]

Guys I have had a couple machinist contact me via email and this is actually in the works for heavier brass inserts for aluminum shafts. Looks like 50 and 100 grains will be initial options. Please if you have any interest in these post here on size needed and how many you may be interested in ordering so we can see if there is a market.

Need to know 50 or 100 grain, how many you may order and which aluminum shafts you would like them to fit inside. When stating shaft name give all info on shaft i.e. 2016 Easton Gamegetter II or 2114 Gamegetter III Yukons.

Thanks T.J.

[Rob DiStefano]

Originally posted by Tim Fishell:
Lets not start the Carbon VS. Aluminum debate again!!!

hasn't happened yet in this thread, and i assure you it won't.

[Tim Fishell]

Also why shoot aluminums, they do not hold up as well and they at least to me are noisy at the shot and seem harder to tune tham carbons. Shawn [/QB]

Just making sure this comment didnt lead to anything there Rob!!

[Tim Fishell]

So...is there any more interest in these?  Anything else other than 50 and 100 grains?  I was thinking 2016, 2018, 2020, 2114, and 2117 would probably be good places to start on sizes.

[Rob DiStefano]

if the predominate bh in use is a pre-built screw-in, then consider going for high foc with at least 300 grains total up front (for at least 25% foc with a 28+" arrow). that would dictate at least a 150 grain insert with a 125-190 grain bh.  just a thought to consider.  i always build an arra based on total weight and foc, and use front end weight to achieve both - but that's just my thinking and requirement.

[KentuckyTJ]

Good thoughts Rob. Since aluminums are not as stiff as carbons should we worry about adding too much weight up front? I've never done any testing with any more than about 250 total grains on the head so I'm not sure how aluminums act above that.

[Rob DiStefano]

i've been using beman 500 carbons, 29.5" from the nock groove to the front of the brass 100 grain insert, 125gr steel adpapter with a glue-in 125 grain ww broadhead (or judo or field point) for a total of 350 grain front end package, 29.31% foc, 585 grain total arrow weight.  i use this arrow for every kinda shooting with a 55.5# holding weight mohawk longbow.  by all the charts and arrow knowledge, this is a really weenie weak arrow for that much bow horsepower.  but as others can attest, my arrow flight is like a little bottle rocket dart.  go figure.  i spent too much money and time following the shaft chart wisdoms and finally just experimented on my own.  then again, i do believe that carbons are at least somewhat harder to tune than alums - alums are pretty easy, at least for me.

 

[Tim Fishell]

Thanks for the help Rob.  Going for 300 grains total up front seems to be a good number to aim for.

[Sharpster]

Sorry for the confusion Guys,

I'm okay with aluminum inserts, just that I'm not okay with buying them from Korea or China, or Taiwan. Which is where they're all made. (I have called all the manufacturers).

Dino, if you know of an American made aluminum insert, please let me know who makes them. I only need one size but, lots of them.

Ron

[KentuckyTJ]

I have always shot large cutting diameter broadheads. Over the past two season's however I've shot 9 whitetails with a new broadhead setup (for me). Not stating this to brag just giving the info to validate my point. I've gone to a smaller 100 grain broadhead. They are smaller both in diameter and weight. I have noticed much better penetration with the smaller diameter head and my recovery ratio has increased because of it. The smaller head of course has less drag than the large diameter heads when going through the animal. Although the smaller diameter is good the loss in weight with the smaller head is as you know not good. I do use the 100 grain brass inserts (in my carbons) to pump up the head weight as much as possible and is the reason I began this thread. So I am interested in at least the 100 grain option for aluminums.

If you guys think there is a market for heavier inserts I would definitely like to give them a go as well. Like Dr. Ashby and Rob are saying as long as your shafts can carry it more weight is better all around.

[VTer]

I think 2219 is a popular size also. That's what I would need.

[vtmtnman]

I started a thread about this same thing a few weeks ago,but it got little attention and drifted off the page(Big surprise).

I for one would LOVE to see brass or steel inserts for aluminums.Without getting into all of it,it's about time someone made them.They make everything for tinkering with carbons,and have forgotten about us aluminum guys(You know...those arrows that where around after wood,before fiberglass...)

2018,2216 2117 are my sizes.

[KentuckyTJ]

Greg and Richard, a manufacturer for 3-Rivers (Dino) has been in contact with me and he is working on marketable sizes and pricing.

Thanks for posting your wish lists.

T.J.