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

The other night a made up 6 of the Carbon revolution Speed Pro Max arrows to do some experimenting with them. Heres How It all lays out.

Length 28.75'' with Blazer Vanes
Arrow Weight With 100gn tip = 300gn
Bow 07' Black Ice 70#
Speed 322fps
Kinetic Energy= 69.06 Foot Lbs at tip.

Ok so as far as speed VS energy it ranks about average but if your a speed freak than its great. to compare I was shooting St. Axis Arrows and there stats where as follows.

Length 28.75 With Blazer Vanes
speed 262fps
weight 435gn with 100grn tip.
Energy 67.85 foot Lbs

Accuracy is vary good and there is only a 1" drop from 20yrds-30yrds and a 2.25" drop to 40yrds so this is a plus for me considering I shoot a single pin my pin is set at 28yrds and I am confident at 0-40 yards. The axis arrows I was shooting droped as much as 12 inchs at 30yrds.

Durability I shoot about 250 shoots yesterday and today and have seen no apparent damage and other than busting 4 nocks off and there was damage to the arrows. I shot 40 times at the dart system and no apparent damage to the arrows or the screen on the dart system.

Tomorrow I have plans to shoot one at a 35gallon steel drum with a 100grn arrow to check the impact durability and I will post pics of the damage

Hope this is interesting to every one Thanks.

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

Hope You all Find this interesting

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

WOW i was always told that u had 2 have weight n i always stuck to speed glad 2 c this now i can say i told u so.

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

I find that hard to believe, you can calculate all you want, but the lighter arrow will not come out having greater K.E; unless there are greater differences than stated!

1. You did the test with different broadheads, all things must be equal to consider a peneration test.
2. The arrow is clearly shown sticking out of the drum in the entrance pic, and the other picture shows almost a complete pass through one side of the drum; kind of weird.

The thing about Speed Pro arrows, or any arrow too light for the setup; heavier arrows perform better downrange, they have the capability of retaining greater energy at a given distance than a lighter arrow. Also, spine cannot make up for the energy wasted, all that energy was be displaced, and I can guarantee a 300gr Speed Pro arrow is 'soaking' up everything; so where does that extra energy end up at?

435grs @ 262fps: 66.29ft lbs
300grs @ 322fps: 69.06 ft lbs

Even with those calculations, there is still a gap in FPS missing. there is a 135gr difference in those arrow weights, meaning that there should be about a45fps difference, meaning either, that Speed Pro arrow was not traveling at 322fps, or the Axis was faster than stated; or better yet, the test was done without all things being EQUAL.

435grs @ 277fps: 74.10ft lbs
300grs @ 322fps: 69.06ft lbs

Or

435grs @ 262fps: 66.29ft lbs
300grs @ 307fps: 62.77ft lbs

So, I am generally curious as to your DL. I am guessing 28" or 29" DL, and I would like to know how much weight is on your string.

Kind of makes me wonder how this testing was done....:eek:

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

Its true all things must be equal to be acurate. I did notice even though he used different broadheads, the one on the speed pro arrow looked like the the furell was the same diameter as the shaft and the one on the axis arrow was clearly larger than the shaft, if thats the cause it would have possibly aided the axis arrow in penetration.

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

Both were shot with 100grn muzzy MX3 broadheads not the same one refused but the same type weight Etc.... and I am shooting 70lbs with a 29 DL. I do thank you for your input. I was just doing this for ****s and giggles so your input was nice I will take this in consideration and try it again and try to keep less variables

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

Also, taking into consideration, this also shows a bow's Dynamic Efficiency... If I knew the exact calculations for it off the top of my head, I would show it, but it is not too good...

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

Wow that's good to to know that your a archery physicist. I'm just some dumb **** redneck from southern IL trying to have a little fun and get some opinions from people to learn something new. And try to understand the tools I use better. so maybe you can add more to this and give me a physics lesson and explain what Dynamic Efficiency is and how it relates to me screwing around in my back yard and how big of a piece of crap my Black Ice is because its Dynamic Efficiency " is not too good. "

Thanks For the input.

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

I might try some of these Speed Pro's becasue i want to go to a 1 pin sight. I wouldn't pay attention to Jeff K. Seems to me like he's already made an ass out of himself stating you were using different broadheads. And I don't know what the hell he was talking about with the pictures :eek:

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

The speed pros are really nice I shot again last night and fine tuned some things and I'm useing a one pin tru-glo range rover site. I love it the pin is set on 28yrds and I'm 1 1/2 high at 10 yrds and 1 3/4 low at 40yards.

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

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

Ok, now its all making sense.:D:D

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

What you always quoting me makes sense?:eek:

Dan