Trad Gang

Main Boards => PowWow => Topic started by: Earl Jeff on October 31, 2009, 11:08:00 AM

Title: CARBON ARROW SPINE VS. MASS WEIGHT
Post by: Earl Jeff on October 31, 2009, 11:08:00 AM

Ok let me see if I can word this w/o sounding like a Idiot. Does anyone know what brand of arrow ie, carbon exp. beaman, easton, etc has the highest spine for it's weight. let's try this? if you are trying to make up arrows with as much FOC weight as possible I think it would make sense to start with a arrow with low mass weight but still enough spine to fly straight with a lot of weight on the front, 300 to 400 grains of broadhead and insert would give you a very high FOC but all is for not if it doesn't fly straight, also if you start with a very heavy arrow and by the time you get it to a high FOC state it might weigh 800 or 900 grains.     A little too heavy for most bows.             LET ME KNOW WHAT YOU GUY'S THINK. I hope I explained my self suffiencly.

Title: Re: CARBON ARROW SPINE VS. MASS WEIGHT
Post by: JimB on October 31, 2009, 01:17:00 PM

It's actually a good question.I recently needed a spine heavier than .340 but didn't want to increase arrow weight but wanted to keep as much FOC as possible.I did a lot of looking around and found Gold Tip Vapor Pro 300's.They weigh 8.5 grains per inch and are the same inside diameter and very close to the same outside diameter to the Gold Tips I am already using.

I just got them and it is too windy now to do any real testing so I don't know what point weight I will end up with.A 30" arrow with 100 gr brass insert and 300 gr point will make a 700 gr arrow with 27% FOC.

Title: Re: CARBON ARROW SPINE VS. MASS WEIGHT
Post by: Earl Jeff on October 31, 2009, 04:42:00 PM

Thanks Jim sounds good. anybody else.

Title: Re: CARBON ARROW SPINE VS. MASS WEIGHT
Post by: wingnut on October 31, 2009, 06:12:00 PM

I'm having the same problem.  I want to get in the EFOC area for my moose hunt next year and want to shoot 175 gr bh, 100 gr. adapters and 100 gr. inserts.

I'm shooting a 54 @ 29 recurve.

All I can find put me in the 800 gr area.

Need to be able to shoot 35 yds.

Mike

Title: Re: CARBON ARROW SPINE VS. MASS WEIGHT
Post by: artifaker1 on October 31, 2009, 09:05:00 PM

GT Pro Ultralites, are a good bet for the lightest. I've found Beman ICSs to be a seriously tough arrow though and not too pricey either.

Title: Re: CARBON ARROW SPINE VS. MASS WEIGHT
Post by: Earl Jeff on October 31, 2009, 09:13:00 PM

I take it the beman isc aren't the same as the old isc hunter, I have nightmares and scars from them.

Title: Re: CARBON ARROW SPINE VS. MASS WEIGHT
Post by: artifaker1 on October 31, 2009, 09:39:00 PM

No I guess not, I've seen mine hit metal and bend the 200 grain point and 100 grain brass insert with the arrow still intact. Just heated it up and popped out the bent insert and put in a new one. I managed to straighten the bent brass inserts that I have and use them in stump arrows. I have several other types of arrows and I've never seen any take that hit without splitting a little or a lot.