RE: Speed Pro Arrows !!!! **updated PICS..*
 

Congratulations you just voided the warranty on your new bow.

RE: Speed Pro Arrows !!!! **updated PICS..*
 

Yep

RE: Speed Pro Arrows !!!! **updated PICS..*
 

Yep, now when those limbs begin to splinter be prepared to fork out about $120 for a new set and if you have to have a pro shop install them for you another 30 or 40 bucks added to that.

RE: Speed Pro Arrows !!!! **updated PICS..*
 

Well you all may be right but I have shot well over 400 times and no problems yet. but if there is I will put new ones on. I don't feel and differencebetween them and the 435grn arrows I was shooting. I would think that If there was going to be a major malfunction it would have already have happened.

RE: Speed Pro Arrows !!!! **updated PICS..*
 

It's a carbon arrow thay have more penetration if the axis is bigger around thats way, are if the wall is ticker than the axis thats way. We all know carbons don't bend much when it hits the target, so it follows the point with out bending like a snake through the hole taking energy form the arrow. Good luck on your test there always people out there who try to @#$! about every things and try to make you look bad.

RE: Speed Pro Arrows !!!! **updated PICS..*
 

There right about warranty you must shoot a 350 grain arrows 5 grain perpound. You may bend you axles are brake a limb and thats way they are penetrating better on the steal drum. Holly crap only 300 grains.

RE: Speed Pro Arrows !!!! **updated PICS..*
 

Yo,

Just to remind non-believers...
Each bow, each limb setup and each arrow shot with any point/head, any weight, any vanes etc. behaves differently.
I have seen a bow energy graph in detail and know a lot of physical principles. Let me enlighten some of you about some theorycraft and share a few thoughts.

Energy:
A bow is most energy efficient when its draw cycle is equal to release cycle (that's 100% energy). Most of today bows can reach somewhat impressive effectiveness (above 80%) but none is close to the ideal line.
Now to the energy transfer... Well, some bows get most energy transferred to heavier arrows while other bows do better with the lighter ones. Dependencies? Loads of things. Will post as many as I know if you wish me to. Basically, a bow with a given setup will shoot light arrows faster then the heavy ones.

Penetration:
Penetration will depend on the energy transfer rate. For an arrow which is to light, the energy can't transfer efficiently enough to secure the theoretical penetration. Also, the risk of breaking arrows/limbs grows proporcionally. Is that any different with heavier arrows? No. An arrow with to much weight may take all release cycle energy from the bow but the effectiveness of the bow will be smaller.

So what do we get from this? And I really counted only this 2 factors.
At 70# the bow could shoot the 300 gr arrow with more penetration power as the 422 gr arrow.
The normalized weight should be 350 gr for the arrow (or more). As the 300 gr arrow is only 50 gr lighter then the normalized arrow I do believe, the arrow had more penetration as the 422 gr arrow had. The 77 grains difference for the heavy arrow could have justified it.

Final words:
I do believe there are many other factors which "interfered" with this theory yet a complete graph of the actual behavior would be the best proof. What do I mean? Get arrows. As many as possible with weights from 300 gr to 450 gr in let me say 10 gr steps with at least same spine and utility (vanes, broadhead, knocks). The diameter would be hard to maintain however. Now shoot them all 5-10 times, get the values, make the graph. You will discover a simple thing. There is no winner on any of the graphs ends.

HOUGNH :D

RE: Speed Pro Arrows !!!! **updated PICS..*
 

I am not Pro Light arrows or Pro Heavy arrows but....................

Shooting less than 5 grains per pound is Not Good!

It actually borders on stupidity[8D]

Dan

RE: Speed Pro Arrows !!!! **updated PICS..*
 

So from 10 to 40 yards you have a total difference of 3 1/4 inches in rise and fall,that's pretty impressive if true,but I would really reconsider shooting that light of an srrow for safty reasons if for nothing else.It's just not worth the risk of putting yourself in that kind of danger.

RE: Speed Pro Arrows !!!! **updated PICS..*
 

I could post some trajectory charts but I won't. My Stryker shoots over 400fps and it's trajectory is quite a bit more than 3 1/4" from 10 to 40 yards.:eek:

Dan