Fast fligth vs spine

[Jjpso]

Hello there.

I've read many different opinions about increasing the spine of the arrow, if one is using fast flight: some people say 3#, others 5# and some 10-15#

What is your personal experience?

Best regards.

Joao

[1442]

I say  0
If you where using 1/4" grass rope for a bow string you could probably get away with less spine, but a fast flight sting doesn't add poundage to the bow so stiffer spine is un necessary.
Each bow has a preferred spine due to its design and arrow pass location.

[Danzn Bar]

I say  0
If you where using 1/4" grass rope for a bow string you could probably get away with less spine, but a fast flight sting doesn't add poundage to the bow so stiffer spine is un necessary.
Each bow has a preferred spine due to its design and arrow pass location.

Sorry but, I can't quite agree......I've shot a lot of B50 strings and a lot more Fast flight type material, and I can say that fast flight shoots a little heavier spined arrows than a B50 string from the same bow.  Just my experience.
DBar

[duke3192]

Fast flight does seem to impart more energy to the arrow. You can use a smaller dia. string which translate to faster string speed, faster arrow. There is no set formula for fast flight, you just have to experiment with spine.

[Jjpso]

Ok, Thanks for the opinions.

For instance, my bow is a pyramid board bow, 55# at 25" draw (my actual draw length), i shoot from the hand and the grip is bit over 1" thick, the string is fast fligth, what spine would you choose for the arrow? I think 45/50 for a 29" arrow would be ok, and if i need i could down the shaft if i need?
What do you think?

Thanks,

Joao

[Danzn Bar]

I think it is a little light....50/55 might be better at that length with a 125 gr point.  Make sure you have the stiff side of the shaft against the bow.
DBar

[Pappy]

Remember you are reducing the spline by 5lb when you add inches over 28, and adding 5 lbs when you go inches shorted than 28. FF will make it shoot a little heaver splined arrow, maybe 3 or 4 lbs, not very much and may not be able to tell the difference with a fletched arrow.
  Pappy

[Badger]

  I agree with Pappy the spine responds to acceleration, a fast flight will accelerate slightly faster so will use a littel more spine. I usually round off to about 5# for fast flight and skinny strings. Faster bows will need more spine than slower bows for the same reason.

[PEARL DRUMS]

Ive cant remember anymore because Ive used FF for so long on every bow I own. I do know that I draw 28" and my 29" 50-55# parallel arrows fly great from any bow 50-60#.

[Pappy]

And that is about what I find Pearl,50/55 at 29 inches would be 45/50's, about 5 to 10 under usually flies well out of all my self bows, if they are cut to center I may get by with a little heaver splined arrow.
  Pappy

[Badger]

      If I am shooting a d/r self bow cut close to center at 55# I use a 28" arrow with about a .550 deflection, I draw about 26 1/2'.

[mullet]

I didn't hunt with my Osage bow while at Pappy's because I put a FF string on and I wasn't happy with the arrows I use for that bow. They seemed to have a hec of a "kick" when I shot them and were hitting all over the target.

[Jjpso]

I didn't hunt with my Osage bow while at Pappy's because I put a FF string on and I wasn't happy with the arrows I use for that bow. They seemed to have a hec of a "kick" when I shot them and were hitting all over the target.

That means that there was more energy puted in the arrow?

Thanks all for your answers

Best regards,

Joao