Longbow, please help me understand

[Joe03]

Try not to be too long.
Tuning this am. Was having shelf rest pad left edge rubbing down on my Spirit 46#, but with some blue painters tape , for testing, I have that better. Played with my nock position, brace and tip weight. Tip weight seemed. to make that better on my 3555, increasing it to 175gr. Rubbing pretty much gone.

Question.

 I am thinking this weakened my spine so changed how it bends on release??

Now my second question.

If I still want to use 145gr field points and broad heads , mainly broad heads, does adding those weights behind my inserts on my Gold Tip carbons, do the same thing as a heavier point or broad head ?

Was thinking of adding 30 gr behind the inserts and was hoping to have the same results as the175 gr field points.

Also, my spirit recommends up to 8" on brace but it seems to be the best at 7.2".   ???

As always thanks for any input, I am new to tuning this langbow and,,  longbow and shelf shooting itself.

Joe

[shortstroke 91]

Adding tip weight does make the shaft weaker and adding weight to the back of the inserts will give you the same results as a heavier head. I'f the bow's quiet enough and shooting where you look leave the brace height where it is.

[BigJim]

Your ciphering is going the right direction. The 3555's are likely too stiff for your set up...especially if you have cut them (unless your drawing over 28"s). Shoot some bare shafts to confirm.  Add the weight behind the insert or replace the insert with a 50g insert.

Brace height recommendations are only a starting point. You must do your own testing to find the best spot for you and your bow.

BIgjim

[Joe03]

Thanks gents. I normally draw 28 but, drawing a bit over on the longbow. 3555s are 29.5 inches. I have the GT tool for adding weight on the way and will experiment some more. I kinda enjoy the tuning process, learning as I go along.,  joe

[Wudstix]

Its an adventure.    

[cahaba]

Most bowyers recommend a general brace height but B.H. will vary bow to bow. No two bows are the same even if they are the same model and specs.
Your arrows and shooting habits has a lot to do with the final outcome.

[Joe03]

Well after a tiring and enjoyable Sunday I tried many combinations and after all said and done,,,,, the 1535s with 145gr tip was the most consistent. Just couldn't get the 3555 to be consistent. At least the do shoot well out of my  45# recurve so no waste.
With the 1535s I don't even have to add any more weight and I'm at the point weight I want to be at. So BigJim was the man saying 3555s,,,,,, over spine.
Now, to concentrate on various aspects of  FORM.

PS. Wife worked today and it did sprinkle so yard work waits till next weekend.

[Longbow917]

Joe, for what its worth I am using 3555s cut at 29.5" with my 49 and 50# longbows and use a point weight of 225 grains.  I seem to get really good flight with this combination.  Just in case you are wanting a heavier combination using the 3555s.

[Joe03]

Yes, I have been teetering back and forth between the 2. I notice the 1535's with lighter tips (125-145gr.) fly well and the 3555 with heavier tips do well. (185 - 200gr)
So, I guess thats good.

I remember as a kid, 45+ yrs ago, I had a bow and different length wood arrows, boy I used to have fun.
Didn't care about tuning, heck, never thought about that stuff.

[Trumpkin the Dwarf]

Take this for what it's worth, namely my opinion, but you sound like you shot for a long time on Sunday. Form suffers when you get tired, and the tuning may not be what caused the erratic flight from your 3555's. It is probably worth shooting them again and checking your results.

That said, I would think you'd need more point weight to get them flying right from your setup.

[Joe03]

Malachi , your right, tired out toward the end and got sloppy.