How far is the pin from the peep? The further away the bigger the pin gap.

 

I tried bringing the site closer but the lens is not as clear. There is as arrow weight vs. poundage differance in the 2 bows. The copper John Q2 pin gap is very tight, with a heavier arrow and more poundage, while the other one is gapped with lighter and less poundage. The 30 to 40 yard gap is 3 times what the other is. Kinda weird.

 

If your sight pin is not at the same distance from the front of your riser your pin gap is going different.

 

Sounds like a couple things going on --

1) the bigger the distance between the peep and pin the bigger the gap, as was mentioned above

2) the heavier arrows will retain more speed down range -- but I wouldn't expect it to be real significant at 30-40 yards, unless the weight difference is big

The bigger pin gap does NOT increase the distance judging error -- it's the speed of the arrow that determines the flatness of the trajectory, not the pin gap.

 

ONE HAS A SCOPE AND THE OTHER DOES NOT??

 

Its the scope....

 

It may be the string angle, the ATA lenghts are not the same.

 

it is the scope. i shoot a 4x lens in my 3d set-up. my pin gap is 3/32. each pin represents 5 yds. my hunting setup my pins gap is 1/8. each pin represents 10 yds.

 

Pin Gap

Shooters,
As the sight radius increases (gets longer) the pin gaps become smaller, not larger.

Sight radius distance above the arrow shaft also affects pin gaps, with all else remaining the same.

 

HUH?

L-ROY hey clear that up for me will ya? Are you saying as the sight ext. i.e 6"- 9" gets longer, the gap between 20-and 60 yards gets smaller or longer? Cause if you are saying it gets smaller...then life works different in these here parts??? Ken

 

Ken -- I'm with you; I think L-Roy has it backwards.

 

Bert- I think you are correct. Here is what I know from shooting Olympic recurve. Many people can't get 90 unless they move their sight towards their risers. That means as the sight is moved in, the "gap" decreases. Indoors, I have been told that a longer extension is more accurate because it allows more precise aiming. This is a function of having more defined movement of your arrows as you move your sight as well as a longer sight plane

 

Easier

Hey guys,
Sight radius/targets just react to the laws of Plane Geometry.

I'll try to work up some type of an example later.

 

Length

Shooters,

Seems as though I must extricate myself from a very percarious situation. The original question did not state enough facts to give me the information needed to correctly formulate the proper answer.

Sight gap difference IS a factor of the sight's geometry and is not at all related to the speed of the arrow in any way.

Therefore, my original statement was WRONG.

It should have read: As sight radius increases, the pin gaps will INCREASE.

It always helps to have all the facts in line before one responds!

I am truly assured that the shooters will accept my most artfully created correction.

Thank you,

 

You a politician? Blaming poor information for your error.

 

No

-------when I attempted to create the model----------well, duh???

 

LRoy-

You wrote..."Sight gap difference IS a factor of the sight's geometry and is not at all related to the speed of the arrow in any way."


Actually the pin gap is purely related to the speed of the arrow and nothing else!

The pin gap is simply a function of compensating for the arrows drop and relaying that to pin spacing for hold-over.


To answer the original question there are too many variables that could be different to cause one bow to have a smaller pin gap than the other. The MAJOR contributor to this is simply the peep to pin distance. One inch difference between the bows can compensate for around 20 f/s different in speed.

The difference in the gap between 30 and 40 yards is most likely a tuning issue where one of the bows has a nock high condition, and the other a nock low condition. This has very adverse effects on arrow trajectory as one arrow leaves the bow pointing up, and the other down.

Aside from those two main reasons there are a few minor things such as arrow weight etc, but I am prety certain we already covered the culprit.

 

Gap

Tony,
In the original question, we were dealing with a known speed of approximately the same for both bows. The asked question was why was the pin gap of one sight different than that of the other.

Not enough descriptive information was given for a proper answer. The only answer which would be correct within the confines of information given would be that of the geometry of the sight apparatus/target, which is nothing more than simple triangulation.

Remember, originally, we were dealing with the given of the speed of both bows as being the same. You have quoted other variables which were not given in the original question. Yes, other variables may enter into that of sighting, with some being arrow weight, point shape, fletching type, number, size (drag co-efficient), sectional density, and others; but, these were not factors given in the original question.

The only viable answer to the original question is that of sight geometry/triangulation; therein would be contained the answer for pin gap differences.

Yes, the original question was asked in a confusing manner, and answers to it must be confined within the scope of the information given.

You've extracted a quote from a statement, and used it differently than that within which it was originally given. Then your next two statements are given, which have no bearing on the original questions' parameters, and its possible answers.

 

Well I am not going to go into the laws of science...But on my Spott Hogg....With the 4x lens in my 20 and 30 yard pins have a BIG gap....Just by taken the lens out nothing else it close's a bunch...That was not moving peep speeding up my arrrow or nothing..Just taking the lens out...

 

L-Roy-

I can see your point now....I did kinda take that out of context. Sorry about that.

 

OK

Thanks Tony!

 

One thing about this place is, if you ask a question you will get an answer. Thanks for the feed back, I'll try some of the suggestions and see if It changes any. I haven't tried removing the lens yet. If that changes it I may consider not using it.

The 20,25,30 are stacked but the distance from the 30 pin to the 35 is larger than I expected and then the 40 is even worse.

 

Bert might be on to something here, a heavier arrow will carry better down range, since it is the farther distances that are spaced out, that could be one reason. Another could be is that if you are shooting different arrows and one set has a sharper angle on the vanes/feathers that will cause enough drag to slow them down at longer ranges as well.

 

Why do you have 20,25,30.....pin setup?
Instead of 20,30,40....or25,35,45....

 

i HAVE A 20,25,30, 35,40

I use the bow the gap is at the 30-40 yd. pins I was able to put in a 35 w/ no problem. The 20,25,30 are tight.
I set this up for the POP OUT course that I shoot. I have no problem scoring with the bow, I just hate the pin gap past 30 yds.