Deceiving specs?
 

Just thinking about some things related to archery equipment and manufacturing specs. as given to the bowhunting public. I wonder how many of the specs from manufacturers are not accurate? Reason I ask is I just measured two different brand/models of broadheads I have and neither of them had the cutting diameter they are advertised at. One is clearly off by 1/8" and the other by just less 1/8" inch.

Over the years I have also bought bows that did not have the correct brace height even with the correct amount of cable/string twist at my draw length. One was so far off(over an inch)[:@] I sent it back in and when returned it was the same.

RE: Deceiving specs?
 

I just blame the metric system for all of my measuring problems.[:@] sry mike it was a joke.

RE: Deceiving specs?
 

I detest metric as well.;) But when I buy a broadhead stating 1 1/8" diameter I expect it to be 1 1/8" diameter....not exactly 1".

RE: Deceiving specs?
 

Considering that most of the archery stuff is still made in the US, I don’t understand the metric comment.

The problem is the way they design, manufacturing, quality control, and caring about what they make.

RE: Deceiving specs?
 

Gee what ever you do dont buy a grain scale cause that will be a real eye opener on their weights as well:D

I have had some 100gr heads come in as low as 90gr and as high as 115gr.

Just on field tips to get 12 that weighed exactly 100gr's I went through 2 boxes of them with well over 100 tips in each box.[:@]

RE: Deceiving specs?
 

I am about ready to buy one.;) I haven't lost a deer(out of 3 shot with it) with the 1" broadhead, but now its in my head.[&:]. Guess 1/8" shouldn't matter but still.........

RE: Deceiving specs?
 

you are right on both.
Yes, it shouldn't make a big difference in performance
They should measure as advertised.

RE: Deceiving specs?
 

Want some other eye openers, try weighing your bare bow. Most bows are a good bit heavier than advertised. Treestands are another one. We have weighed several different model climbing stands from several manufacturers and I would say that they, on average, weight about three pounds more than advertised. It is pretty amazing to me how these companies can advertise something and it isn't remotely close.

RE: Deceiving specs?
 

The vanes on my Easton shafts are 3 7/8" not 4".:D:D

RE: Deceiving specs?
 

I get a kick out of advertised speeds. I mean, they shoot that bow on a shooting machine and if they get ONE arrow to shoot 320, that's what they advertise.

I have been pretty surprised at weights of fp's though.....I hear all the time how much they vary, and I've only seen them vary by a grain or so....

I guess they figure the "average" joe won't even notice....Most of us aren't good enough to notice several grains of weight difference......But to those of us that demand perfect equipment, it's a real PITB.....

RE: Deceiving specs?
 

I've wondered the same thing Coug, there aren't many people that are going to test their bow out at IBO because there aren't many 30 inchers out there. It would be pretty to falsify info.

I have a question, if you were to measure the dia. of a 3 blade head, wouldn't you take the distance from the tip out to the furthest edge of the blade and multiply by 2? Obviously it's easy with a 4-blade.

RE: Deceiving specs?
 

I think they should add the word "approximate" before each spec...or at least advertised a range of acceptable tolerances.

RE: Deceiving specs?
 

Now I can blame my equiptment for my poor shooting!Thanks Guys!

RE: Deceiving specs?
 

I'm not sure how the industry measures "cutting diameter" but sayif on a 3 blade head you just measure from the outermost point on one blade to the outermost point on another blade thatwouldn't be right. I think you have to take all three outermost points then draw an imaginary circle encompassing them. The diameter of that circle is the advertised cutting diameter.

edit: the diameter of that circle will always be bigger than your measurement from blade to blade because of the arch in the circle. Does this have something to do with your measurements coming short?

RE: Deceiving specs?
 

Yes, I just took the widest point from blade to blade. Perhaps thats not right because it does leave out the third blade. Don't really matter to me on this particular broadhead though(Rky Mtn. Turbos).....I just bought 11 of these heads with an additional 15 extra brand new blades from a guy who likes to try new heads each year, at a rock bottom price.:)