Now, that was with that Allegiance set at 60 lbs. and a 29" draw using a 381-grain arrow, according to your earlier post.

For every inch of draw length you go down, you will lose 10 fps.

So... adding back on 10 fps for the 1" less than IBO specs would make it 289 (remember, we're starting with a chrono'd speed of 279)...

For every 5 # draw weight you go down you will lose 10 fps.

Add 20 fps for the 10 lbs. less draw weight below IBO specs would make it 309...

For every 3 grains of weight your arrow is over IBO (5 grains per pound) you will lose 1 fps.

31 grains above IBO specs would make it 319...

Add 8 fps for the smooth mods would make it 327 fps... which is at the very low end of what's acceptable (327-335)

Yep, unless you had anything other than the factory brass nock and hush kit on it, Mike from Texas is right up above.

- edited so Rob can hopefully "follow the math" this time and see how I came up with an IBO-spec speed for the Allegiance he tested today.

As a comparison for you, I went downstairs and grabbed the birth certificate off mine... 28.5" draw (which I'm changing to 29") at 316 fps... Add 15 fps back on for the shorter draw length to get it up to IBO specs, and you're talking 331 fps, which is obviously more in the middle of what to expect.

Greg,

I talked with my buddy out in Western PA and he mentioned to me that the Trykon had the Fuse string on it....that struck a cord with me...I grabbed the Fuse catalog and the Hoyt catalog and looked at the mailing address and phone numbers and they were the same...I realized Fuse and Hoyt were one and the same company. I always go with black accessories because I can change them from bow to bow. I was looking for the Stealths, couldn't find them and I really liked the look of the Axium by Fuse..the brown matches the brown limb pockets and cams on the Hoyt and if I decide to change my mind for the Allegiance...it'll still look good.

Speed wasn't the top reason but when all else was equal...I went with familiarity and speed....I am so extremely impressed with the Allegiance, like I said, I'm making a phone call tomorrow and with the pending weather report...nothing better to do then spend a couple more hours in the pro shop...ya know.

Mike from Texas, can't tell you or not if they are low but can tell you this chrono is exactly what I posted....chrono's vary but used the same chrono for each bow...if it was slow for the Bowtechs, it was also slow for the Hoyt and Mathews.

Mobowhuntr, I didn't pull the UltraTec but have in the past as I have with some of the other cam 1/2 bows...the new Zephyr cam 1/2 did roll over slightly harder...something I'm used to on the Command cams of the past.

Rick, I wouldn't have had a problem picking up and trying a Darton. I've always been impressed with them form the Maverick of the past...great bow...this shop didn't have Dartons or I would've chucked a few arrows from it...always been a fan of Darton...a former hunting partner used one and I shot it well.

Greg, couldn't follow that math bud...confused but again I used the same chrono for all 4 bows and that's the speed I got at the specs provided..if it chrono'd slow for the Bowtechs, it did as well for the Hoyt and Mathews so we need to do the same math for each....chronos vary but it was the same for each bow manuf.

OK, Rob... I went back and added some stuff above so you can hopefully follow how I came up with what I did.

What Mike and I are saying is NOT that the chrono was slow... we were meaning that particular Allegiance is on the bottom end of what's considered the acceptable range of what BowTech allows out the door. That's why I went downstairs and grabbed the birth certificate from my Allegiance; I knew it was a "hotter" bow, if that makes sense.

In other words, I wouldn't buy that particular Allegiance... (just being honest) -- IF having the utmost speed you can have from that model is important to you. (And why wouldn't it be? If you're gonna buy an Allegiance, you might as well have one of the best ones that rolled off the assembly line... Sorta like the old belief of NOT buying a car made in Detroit that rolled off the line on a Monday.)I'd look around and find one at the upper end of the spectrum.

Oh, and you'll find any info you may be looking for (if you still want to check them out) at www. stealtharchery.com

I wonder how much speed is lost when the binaries aren't holding 80%.
The tributeI shot was only holding 70 (calculated), and from what I've read the speed & valley increase with the letoff on the binaries.

How much of a difference would optimally tuned cams make?

Okay, followed that Greg but does that mean the chrono we used was slow and if so, should we increase the speeds on the Hoyt and the Mathews as well...they were all shot through the same chrono..?

No, no, no.

I guess I'm not making myself clear here, and that's unusual for me to not be able to explain myself in writing!

Again -- We're not saying anything's wrong with the chrono at all. BowTech publishes an acceptable "range" of IBO-spec'd speeds which it deems as OK to let a bow ship out if it falls in between those figures when test-fired before being shipped. In fact, every BowTech bow is hand shot, tested, measured and documented to ensure that the finished product at least meets the published specs.

BowTech sets the fps range for the '06 Allegiance at 327-335... meaning that every bow which comes off the assembly line is actually shot through a Custom Chrono Heavy Duty Pro Shop Meter, and the ones which won't hit 327 are turned back.

The "math" I did up above (and which Mike obviously did as well -- at least in his head real quick) showed that that particular Allegiance which you shot comes in on the very lowest of the acceptable range. Now, lets' be honest. Most manufacturers would ABSOLUTELY LOVE to have a bow with the shooting characteristics you experienced sling an arrow at 327 fps... What I'm saying is that for that model, that is actually one of the slowest Allegiances you'll see come off the line and make it into the customer's hands...

Again, nothing wrong with the chrono in your pro shop... and -- really -- nothing wrong with that particular Allegiance, either. I'm (and Mike is too) just saying that you can probably pick up another Allegiance which will shoot at least four or five fpsfaster than that one does...

Very cool Greg, hopefully I can do just that tomorrow...and hopefully one with the speed modules...again, the Allegiance is so impressive...I need to double check it with the Trykon I put back.....wanna do the right thing ya know.

ps...perhaps I was a little slow tonight.

Cool, but does that make sense? What I've been trying to explain?

Si senior, gracious.[8D]