Free: Contests & Raffles.
Quote from: konrad on January 21, 2010, 04:49:41 PMSounds interesting!07 Bear Truth (hard cam)60 pound draw29 inch shaft27 inch draw length2 inch BlazersThe question is: What spine arrow and weight broadhead will give me a 19% FOC balance point?I currently use a 2413 with 100 grain points, Bohnig signature nocks and 2 inch blazers.My FOC is almost 11%.Thanks for the help,KonradYour current setup: Recommended spine: .434, your spine: .365, so it's off the charts stiff. The numbers: 231 fps, 10.68% FOC, 58.1 ft-lbs KE, 489.5 grain arrow. Arrow drop 20-50: 58", KE at 50: 47.1 ft-lbsTo get above 19% FOC....You can stay with your current arrows and unglue the inserts and cut them to 28" (too weak at 29") and use a 225 grain broadhead. I'm guessing you got the >19% from Dr. Ashby's research on penetration, and this is what he used to get that FOC: Grizzly broadheads and steel weight adapters. I followed the same logic this year and bought from these guys with no problems, but I haven't sent one through an elk yet to give you a report, but I can tell you that they get sharper than ****:http://www.braveheartarchery.us/new_page_5.htmhttp://www.braveheartarchery.us/new_page_23.htmWith your newly cut 28" 2413 arrows and 225 grain broadhead, then the recommended spine becomes .369, and your arrows are .365, so you're good there. The numbers for this new arrow: 207.8 fps, 19.11% FOC, 57.9 ft-lbs KE, and 604 grain arrow. Arrow drop 20-50, KE @ 50: 73.1", 47.1 ft-lbs.To go with a carbon, I'll pick a weight forward arrow by design, Carbon Express Maxima Hunter, and the best broadhead made, Silver Flames. For a 29" arrow and 210 grain Silver Flames, the recommended spine would be .373, and the Maxima Hunter 350's are .337 spine, so they'd be stiff but should work just fine. The numbers for this setup: 226.6 fps, 19.43% FOC, 58.4 ft-lbs KE, 512 grain arrow. Arrow drop 20-50, KE at 50: 59.8", 48.6 ft-lbs.Good luck in your pursuit!
Sounds interesting!07 Bear Truth (hard cam)60 pound draw29 inch shaft27 inch draw length2 inch BlazersThe question is: What spine arrow and weight broadhead will give me a 19% FOC balance point?I currently use a 2413 with 100 grain points, Bohnig signature nocks and 2 inch blazers.My FOC is almost 11%.Thanks for the help,Konrad
Todd,Can you run these numbers?2006 Allegiance28" drawset @ 64#Trophy Taker full capture28" AC Super Slim 400's X knock100 grain Shuttle T 3 blade2" BlazersD-loop
Cool Todd, I just got this bow yesterday... is this program to give me the results of my setup or to help me Get setup??? I know almost nothing about compounds and tuning them... I do know this.. I have like 5 dozen brand new axis 400 shafts... so am hoping to use them.... Here's what I know...2009 Hoyt Alphamax27" drawset @ 70#Fuse double prong drop away..(dont know exact model)Dont know arrow length, but would like to use Axis Camo 400's (they are 9.8 per inch)No preference on broadhead yet... would probably like 125 though?? 3 Fletch, blazers or standard, whatever...D-loopNeed anymore info?? I guess my main question is what length to cut these 400's to in order to get them to spine good with this bow and a 125 point? Or will I have to go with a 100 point??? Hope not, I like a little more FOC.Ernie
can you run these numbershoyt aphamax 3565 pounds 27 draw28 gold tip pros 557585 grain tipsQAD ultra rest2 blazersd-loopI think total arrow weight is about 350 grains
Quote from: D-Rock425 on February 07, 2010, 10:21:29 AMcan you run these numbershoyt aphamax 3565 pounds 27 draw28 gold tip pros 557585 grain tipsQAD ultra rest2 blazersd-loopI think total arrow weight is about 350 grainsNo problem! I don't see any problems on your setup. Recommended spine is .440, and yours are .400, so they're a bit stiff, but probably ok. The numbers: 268 fps, 11.6% FOC, 56 ft-lbs KE, 355 grain arrow weight. With enough stiffness to spare, you could go to 100 grain heads with no problems to get a little heavier. The numbers for 100 grain heads: 265 fps, 13.2% FOC, 57.7 ft-lbs, 370 grains.Arrow Drop 20-50, KE at 5085 gr: 33", 48 ft-lbs100 gr: 33.8", 49.02 ft-lbs
Todd,Will this program run these extreme numbers? I need to buy some stiffer shafts and I'm trying to figure out if I can go with 340's or need to jump to 300's...Here's my thought as above.. and you gave me the Cabelas arrow I needed, but I am going to buy axis arrows... IF I go with the 300, and need a 320 spine, I can just cut it a little longer right? OR...I can probably stick with the 340 and use it at 26"? It is conceivable that I will have the Axis shaft, on the 70# AM 35... 27" draw... with a 100 grain insert and possibly up to a 290 grain head, but most likely something from 175-220... (I know, its retarded, but its fun!!)Thanks for your help!Ernie