Spine question

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ontothepigs
Posts: 117
Joined: Mon Aug 23, 2010 6:32 pm
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Spine question

#1 Post by ontothepigs » Sat Sep 05, 2015 7:14 am

Looking to get some 350 carbon express arrows for my 52# bow at 28 with a 29' draw.

Looking to cut at 31 and fletch with 4 x 4'. Does this look alright so far and what point would you run.
Flatline #52
Java man Falcon #52 @ 29, 60"

ontothepigs
Posts: 117
Joined: Mon Aug 23, 2010 6:32 pm
Location: Cairns

Re: Spine question

#2 Post by ontothepigs » Sat Sep 05, 2015 7:15 am

58' recurve, I think it's cut close to Centre shooting off the shelf.
Flatline #52
Java man Falcon #52 @ 29, 60"

littlejohn59

Re: Spine question

#3 Post by littlejohn59 » Sat Sep 05, 2015 8:39 am

look about right with a 125 point.
However you are borderline if you want to go shorter in arrow length.
ontothepigs

ontothepigs
Posts: 117
Joined: Mon Aug 23, 2010 6:32 pm
Location: Cairns

Re: Spine question

#4 Post by ontothepigs » Sat Sep 05, 2015 10:36 am

Awesome thanks
Flatline #52
Java man Falcon #52 @ 29, 60"

Ian Turner
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Location: Sydney NSW

Re: Spine question

#5 Post by Ian Turner » Sat Sep 05, 2015 12:03 pm

mate i shoot very similar to you in terms of arrow length draw etc and i find carbons shoot "stiff" off trad bows i have found that out of 50lb i use 500 power flights with 145gr points.
Cheerrs

ontothepigs
Posts: 117
Joined: Mon Aug 23, 2010 6:32 pm
Location: Cairns

Re: Spine question

#6 Post by ontothepigs » Sat Sep 05, 2015 8:16 pm

Thanks Ian. I ended up getting some more 350 heritage but got two cut, one at 31.5 and the other 32 to try the three field point weights of 125, 145 and 175. Funnily enough for both lengths the lighter the point the further to the right the nock was. This was at about 10 m, is this too close?

Is that Centre shot or do I need to try some bigger points.
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Muz1970
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Re: Spine question

#7 Post by Muz1970 » Sun Sep 06, 2015 5:04 am

G'day mate, I use 0.340 spine goldtips that bare-shaft straight at 32" with ally insert and 220gn points from 50lb center shot longbow and that's with my 31"draw. 0.400 come out straight with 100gn total in front.

So If there shooting nock right go heavier, either in point or insert, if you find they start to shoot left then you can tune length. Or go for a lighter spine shaft and start again.

Good luck..... Muz

ontothepigs
Posts: 117
Joined: Mon Aug 23, 2010 6:32 pm
Location: Cairns

Re: Spine question

#8 Post by ontothepigs » Sun Sep 06, 2015 8:40 am

Awesome muzz! I was hoping to go heavier as the total weight was around 550. Some of the 200 heads look awesome. Ha ha.
Flatline #52
Java man Falcon #52 @ 29, 60"

Ian Turner
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Joined: Thu Jan 10, 2013 11:19 am
Location: Sydney NSW

Re: Spine question

#9 Post by Ian Turner » Sun Sep 06, 2015 8:58 am

Hi mate yes the lighter the point the further to the right the nock end of the arrow will be indicating that the spine is to stiff.
increase your point weight or arrow length untill they shoot straight.
i test in paper from 2 metres out to 5 on paper and the at the range asking some one to watch how they fly
My paper tests are usually very good indicators.
Cheers

ontothepigs
Posts: 117
Joined: Mon Aug 23, 2010 6:32 pm
Location: Cairns

Re: Spine question

#10 Post by ontothepigs » Mon Sep 28, 2015 10:55 am

So moving on from spine. My nock is high when I bareshaft. I have been moving my nocking point higher? Does that sound right? With a bow square (Carter) I have gone higher than the last etched lines. Still seems to be nock high. Could it be a flaw in my form causing it?
Flatline #52
Java man Falcon #52 @ 29, 60"

Ian Turner
Posts: 784
Joined: Thu Jan 10, 2013 11:19 am
Location: Sydney NSW

Re: Spine question

#11 Post by Ian Turner » Tue Sep 29, 2015 2:01 pm

Mate you could be too high with your nock point.
Start moving it down gradually; shoot through paper at say 2metres and move out to 5m if you have the room.
I find by using this method i get a spot on setup at home and then go to the range and ask some guys to watch my arrow flight and then if adjustments are needed; usually minor if any i do them there.
This will help you work out nock hight and spine and whether your bow shoots better cock feather in or out.
i bought a bow a while back that was about to be fire wood then as a matter of interest i turned the arrow cock feather in and it shoots perfectly.
But if you can do paper tuning its great as it saves a lot of time and frigging about at the range.
Cheers
Ian

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