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  #1  
Old 04-02-2012, 02:23 AM
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Default Bareshaft and Stringwalking issues

I'm trying to tune my 610 Navigators for the Nilo, 28" 1-75" vanes 80g points.


I gave up trying to Bareshaft at mid point (40y) as they were almost off the boss, Bareshaft going way right and showing weak, taken 20g off point weight to 80g adjusted plunger position and spring tension, I made a new (longer) string this morning brace height was 8.75" now it's 8", 43# limbs now turned all the way out to min setting.

If I move plunger away from bow bareshaft improves but long 50+ yard shots fletched arrows go way left and have to reduce spring tension 5 turns, with new string still showing weak, adjusted sping tension to give spot groups with Bareshafts but fletched arrows go left as I reduced spring tension the fletched arrows centre in spot but bareshaft moves 8" right.

I gave up on my stringwalking crawl and just shot 3 under......perfect bareshaft.fletched groups at 30 yards????? I havent cut arrows shorter as dont have proper saw, this is the only option left to me of should I just go by the 3 under groups, if I had hair I would have pulled it all out by now.
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  #2  
Old 04-02-2012, 03:01 AM
Andy Pawlowicz Andy Pawlowicz is offline
 
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Default Re: Bareshaft and Stringwalking issues

Crawl a serving wrap or two at a time and see what it does to the bare shaft, that should tell you which way you need to go. Sounds to me like they will need cut, makes alot more difference than point weight.

Last edited by Andy Pawlowicz; 04-02-2012 at 03:35 AM. Reason: spelling
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Old 04-02-2012, 05:09 AM
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Default Re: Bareshaft and Stringwalking issues

Your arrows are perfect for normal shooting according to Archers advantage, a stiffer shaft is usually better for string walking as you change the spine of the arrow as you crawl up or down the string, its finding that happy medium that takes the time.
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Old 04-02-2012, 05:22 AM
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Default Re: Bareshaft and Stringwalking issues

I seem to have a similar problem as you and gave up on it. Strange, but from 0-30yds I can shoot a bare shaft right in with my fletched using the various crawls. I step back to 40yds and the bare shaft is going high and right. Im a lefty though.
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Old 04-02-2012, 05:47 AM
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Default Re: Bareshaft and Stringwalking issues

As you are finding out , stringwalking is black magic!!
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Old 04-02-2012, 05:49 AM
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Default Re: Bareshaft and Stringwalking issues

I think you should tune to your mid crawl and then put away the BS. Use the plunger to get the fletched into the centre above and below the area of tuned crawl.

You mention 40 y as mid-crawl so I assume PO is 80 y.
Another trick with SW is to use the shelf plus the tuned area. So 60 yards would be a 40 y crawl (tuned) plus the shelf. It would lessen the need to tune from 5-80y, which may be asking a lot. Even 5-50m will have short and long shots needing plunger or string alignment aid.

And that would be the other trick- to use the string where possible.
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Old 04-02-2012, 06:14 AM
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Default Re: Bareshaft and Stringwalking issues

Steve, the furthest distance in your DL is the distance between fingers and pivot point.

The confusion come in with string walking, because you move the arrow closer to the bow as you crawl away from split finger. for example if you were pulling 2" from the bottom limb tip, you would have a 3" power stroke.
so this concept changes the powerstroke in the bow depending on your crawl. this is confused by the limbs being fastest when the closure is spot on. when tiller is exact, and this cant be done with a vairable pull point on the string.

So you gain and loose speed like a yo-yo, so tuning an arrow is a real pain. hence the dark art bit.
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  #8  
Old 04-02-2012, 06:17 AM
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Default Re: Bareshaft and Stringwalking issues

Quote:
Originally Posted by Greysides View Post
You mention 40 y as mid-crawl so I assume PO is 80 y.
80y is max IFAA distance, at 60y I run out of crawls so I settled on 30y as my mid crawl and now tuning for that distance.

If bareshaft is centred at 30y and just fine tune fletched arrows using plunger spring to bring arrows into spot that should be good enough? Shooting just normal 3 under and gapping at 30y both bareshaft and fletched shafts group well but using my 6 stitch crawl bareshaft goes 8" right.

will experimenting with tiller help, on zero at moment?
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Old 04-02-2012, 07:09 AM
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Default Re: Bareshaft and Stringwalking issues

What I like to do is bare shaft tune as far down the string as I can and still have fletched arrows flying good and impacting very close left and right, with my fingers at the nock. Usually thats about an inch down the string. You really can only get a perfect tune at one crawl, unless you change nock point and tiller as you go.
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Old 04-02-2012, 08:03 AM
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Default Re: Bareshaft and Stringwalking issues

The most effective way to make the arrows stiffer is to cut them. As Andy says, it has way more effect than point weight. To me it sounds like the only way to go. Do you still have a margin for the length? If so, you can just take one shaft and test what happens if you cut a cm at a time. If you are just testing, you can even cut the shaft with a Dremel if you are a bit careful. Then go to someone with a proper machine when you found your length.

Other than that and especially if you donīt have the gear to cut the shafts down you need to slow down the bow like you allready did. How you do it doesnt really matter, and every small thing will have a slightly improving effect on the total trim. Go up 2-4 or even 6 strands in the string (depending on what you have now and what material). Make longer and thicker servings, both in the tips and in the centre. Add metal nock points. And so on.

But... better to find a place to cut the arrows.
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Old 04-02-2012, 08:24 AM
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Default Re: Bareshaft and Stringwalking issues

Steve - I am finding it easier (and more accurate) on the short shots to just use my 15 or 20 yard crawl and gap - makes the span of yards for the tune smaller and the tuning much easier.

Martin - what distance to you make your base tune for FITA and do you bare shaft at the other distances to figure out your plunger adjustments?

Thanks

Matt
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Old 04-02-2012, 11:10 AM
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Default Re: Bareshaft and Stringwalking issues

SID I don't string walk -
but I like your point about the arrow nock being in front of your "hold" -
I'd never thought of that.............yikes.
I have enough trouble shooting split.
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Old 04-02-2012, 11:31 AM
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Default Re: Bareshaft and Stringwalking issues

Quote:
Originally Posted by stevelong View Post
SID I don't string walk -
but I like your point about the arrow nock being in front of your "hold" -
I'd never thought of that.............yikes.
I have enough trouble shooting split.
dont we all...

the problem with archery is the targets are too small and too far away!
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Old 04-02-2012, 11:35 AM
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Default Re: Bareshaft and Stringwalking issues

Quote:
Originally Posted by steve morley View Post
I gave up trying to Bareshaft at mid point (40y) as they were almost off the boss, Bareshaft going way right and showing weak, taken 20g off point weight to 80g adjusted plunger position and spring tension, I made a new (longer) string this morning brace height was 8.75" now it's 8", 43# limbs now turned all the way out to min setting.

If I move plunger away from bow bareshaft improves but long 50+ yard shots fletched arrows go way left and have to reduce spring tension 5 turns, with new string still showing weak, adjusted sping tension to give spot groups with Bareshafts but fletched arrows go left as I reduced spring tension the fletched arrows centre in spot but bareshaft moves 8" right.
Don't forget that you can influence both ends of the arrow. Fletching size and shape can overcome some obstacles.
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Old 04-02-2012, 11:35 AM
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Default Re: Bareshaft and Stringwalking issues

Quote:
Originally Posted by Sid View Post
dont we all...

the problem with archery is the targets are too small and too far away!
Sid - it was the close ones that were giving me fits until I started gaping them.

Matt
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