QuoteOriginally posted by arrow30:
[qb] the footing keeps the carbon from mushrooming out away from the insert..
(when you hit something hard it pushes the insert into the arrow)..
 and i think the footing only needs to be as long as the insert.

I have found with a longer footing, that it makes a weak spot where the carbon arrow will break.

Remember there is a difference between static and dynamic spine.

I've always been interested in footing my carbons - this is an awesome thread! Thanks gang

GREAT info    THANKS to all  

QuoteOriginally posted by Tree Rat:
Remember there is a difference between static and dynamic spine.

What is the difference? I've heard of it, but don't know the difference between the 2.

Blue tick, i'm no expert but here's a generic version.....Static spine is measured with a weight placed at the center of a stationary arrow. Dynamic spine is how the arrow paradoxes in flight. They are related but not the same thing.

I agree with most things that were said in replies to this post I may have sounded a little rude the way I worded it that was not my intent Sorry if it sounded that way
Andrew I do agree that the footing along with a good epoxy makes the arrows very very strong. I just wanted to get the point through that I saw no difference in arrow flight or POI even with the footing extending 11 or 12" down the shaft?
My thougth were in extending the footing this far on the shaft that it would greatly aid in penetration by elimaniating a lot of arrow flex when the point (Broadhead) struck its target. Just a theory?

Can someone PM me aluminum arrow size for 55/75 GT Trads Aloha Ron

Ron 2117 will work

Great thread guys is the dynamic spine what Dr talks about with EFOC as it does some strange thimngs to spine when you get over 30% Thanks Shane

2216 works great on the 5575, at least it has been working great for me, and believe me when you hit a rock with the footing on these you won't cringe anymore...

I use 2216's for footing the GT 5575 Trad shafts.

Are you guys putting your footing flush with the end of the shaft/insert or at the actual end of the shaft behind the insert?

Jeff if the footing fits properly you should be able to slide it up against the insert without it slipping over. (behind the insert) but tight against.

QuoteOriginally posted by Earl Jeff:
Jeff if the footing fits properly you should be able to slide it up against the insert without it slipping over. (behind the insert) but tight against.

Thanks, this is what I was needing confirmation on.