arrow weight carbon express guys help me out

Texgrebby87 · 07-24-2009, 06:51 PM

Alright
I shoot a martin cheetah at 75lbs
and I shoot carbon express rebel hunter 60/75 arrows with blaser vanes and 125gr heads, my total arrow weight is 407gr and my arrow speed is 307 give or take 1fps.

So one thing that I noticed is because of my cooking arrow speed my pins are dang close together. which makes it hard to shoot in low light. So I am curious for you guys who shoot carbon express, Should I go up to 75/95 shafts to drop my arrow speed a little and would I be getting more kenetic engery to make up for the drop in speed.

GMMAT · 07-24-2009, 07:20 PM

You should shoot the arrow that's properly spined for your setup.

If you want to add mass arrow weight, add weight tubes.

mauser06 · 07-24-2009, 07:25 PM

GMMAT is right on...if your arrow spine is right, and they likely are as long as they are not real long as CX shafts are typically a bit stiff, stick with that shaft...

like he said, if you wanna slow the speed and add mass without messing up the spine, add weight tubes...

going to a heavier head or insert will mess up your spine...

adding weight will definitely add to your energy and momentum...

shooting that fast with a 400gr arrow, adding some arrow mass wouldnt be a bad idea at all IMO for hunting...

Texgrebby87 · 07-24-2009, 07:52 PM

weight tubes?

does it sound like I have a good arrow set up?

I have had no spine problems with accuracy just that because of my arrow speed that my pines are a bit close.

So with my current speed adding some weight and loosing speed is worth the ammount of kenetic energy I would be getting?

bigbulls · 07-24-2009, 08:59 PM

Why don't you just resight your bow for longer yardages and be done with it?

IE: Instead of the typical 20, 30, 40, etc. yards... do 20, 35, 50 or 20, 40, 60.

Texgrebby87 · 07-24-2009, 09:04 PM

Well I would not feel confident in shooting out to 60 yards. I just need to re check them. its just a problem in low light.

mauser06 · 07-25-2009, 03:19 PM

weight tubes...

http://www.lancasterarchery.com/prod...roducts_id=219

just one of many out there...ive seen them heavier...depends on what you want...

the ones there are 2 and the other ones are 3 grains per inch...

so if you have a 30 inch shaft and use the 2gpi tubes, you would add 60 grains...or 90 grains....or more if you used heavier weight tubes...

sounds like your setup is fine...but to actually know you would need to run the numbers through a program to see exactly what your arrow spine looks like and what arrow spine would be best in your bow...

if your truely shooting 307fps, adding weight wouldnt be a bad idea at all...the increase in energy would be worth it...if you wanted to give up some speed(which will hardly be noticeable by you or the deer) and wanted more energy...even as it stands your setup produces a very good amount of energy...but you can never have too much....

i forget how much weight will slow your arrow...

but if your really spitting 407gr arrows at 307fps, you got performace to do what you wish...either keep it fast or add mass and pack some serious energy...

is super heavy arrows and a pile of energy needed to deer hunt? no...but its certainly not a bad thing to have!

bigbulls · 07-26-2009, 10:40 AM

I have never tested it but I have a real hard time believing the claims that a weight tube does not stiffen the spine of the arrow.

I do not see how it would be possible for the shaft to not stiffen up. Any time you put a tube inside a tube the combined tubes are stronger and stiffer.