Tuning question

Dannon · January 19, 2018, 08:13:00 PM

I recieved a new to me longbow in the mail this week. I bought some bare shafts full length and was gonna do some bare shaft tuning. I'm right handed shooting 49#@28". I purchased 400 spine carbon arrows and the arrow is sticking out of the target knock pointing right. Do I need to add weight to the tip?
If the knock end is pointing left I know I would just trim the length down a little at a time till it straightens up.
Thanks in advance.
Dannon

The Whittler · January 19, 2018, 08:27:00 PM

I watch how the bare shaft flys towards the target, nock left = weak, nock right = stiff. Or put a line down the middle if bare shaft on the left = stiff, shaft on the right = weak.

You get a false reading with target's materials. Watch Black Widow tuning very easy.

Hermon · January 19, 2018, 08:50:00 PM

Assuming that your form is good yes add point weight. You didn't say what weight points you are using but 400's would be very stiff for me at that weight.

Dannon · January 19, 2018, 08:58:00 PM

125 grain points. I used 400 spine cause they were 35-55

January 20, 2018, 09:06:00 AM

Get somewhere around 200-250gr up front, and you should
be able to get those shafts to work.

Bisch

Shane H · January 20, 2018, 09:20:00 AM

35-55# should be a 500 spine

Alexander Traditional · January 20, 2018, 09:31:00 AM

Yeah I'm thinking 500 spine. I'm shooting 400 out of my 55 and 60 pound bows.

Dannon · January 20, 2018, 09:43:00 AM

Ok, thanks guys, I may try some 100gr. Inserts. Or I may have some uncut 400 spines for sale. Lol

Bud B. · January 20, 2018, 10:11:00 AM

QuoteOriginally posted by The Whittler:
I watch how the bare shaft flys towards the target, nock left = weak, nock right = stiff. Or put a line down the middle if bare shaft on the left = stiff, shaft on the right = weak.

You get a false reading with target's materials. Watch Black Widow tuning very easy.

^^^^this

the rifleman · January 20, 2018, 10:38:00 AM

500 spine would be the heaviest spine that I would guess would work with the bow. Depending on how it is cut you may even be better served with a 600 spine. I see a lot of guys overspined shooting longbows. Not so much the other way around.

Bldtrailer · January 20, 2018, 01:16:00 PM

http://www.acsbows.com/bareshaftplaning.html

Please watch the above and read the other on tuning
the Bare shafts should group with the fletched and don't worry about the nock direction
you might be getting a false weak( the shaft bouncing off the strike plate) 500 or even 600 spine shafts might work better (or a lot of weight up front ,with a thinner strike plate)

tzolk · January 20, 2018, 04:07:00 PM

I second the ACS bows link. Focus on where your bare shafts group and not which way the nock is. Like on the black widow video, an underspined arrow will land to the right at the target, a stiff arrow will land to the left of where you're aiming. My arrows are under spined but if you look at bareshaft nock orientation you'd think they were too stiff.
Also, like some of the other guys stated, you should look at 500 spine arrows or put a lot more weight up front. Full length = 32"?
Get a few 300 - 250- 225 - 200 - 175 point weights to experiment with.

Almost most importantly, on your bare shafts make sure your arrow nocks DO NOT CLIP onto the string! Have them barely clip on, so light that an effortless tap from the finger will knock them off. And be careful they don't come off the string when drawing back. Good luck! It's fun and frustrating at the same time.
Also, have a clean repeatable release each time