Sight extension distance...

OK I'v been reading books again..an interesting concept has come to light regarding bow torque..

What distance do people set there sight measured from the button hole to the sight pin? And why? Recurve or compound.

[Rik]

Originally Posted by rgsphoto

OK I'v been reading books again..an interesting concept has come to light regarding bow torque..

What distance do people set there sight measured from the button hole to the sight pin? And why? Recurve or compound.

Up/down or in/out? I assume in/out, but you didn't say...

Originally Posted by Rik

Up/down or in/out? I assume in/out, but you didn't say...

Out, or how far away from you

The title says it all, "extension"

[geoffretired]

If you torque the riser, deliberately or otherwise, the button and arrow rest move very little, but the sight on the end of a long extension, moves much more left or right depending on the direction of torque. It is very similar in effect to adjusting the windage of the sight, without being aware that it has happened.At one time in the distant past there was much talk about placing the arrow rest infront or behind the button in order to compensate for the error produced at the sight. It sounded nicely scientific but I couldn't help thinking that a little time spent on eliminating the reasons for the torque would have been time better spent.

[Field Archer]

I seem to remember that Jim Park wrote an article on Archery Forum about setting the sight extension to a point where it could cancel out any torque.

Originally Posted by Field Archer

I seem to remember that Jim Park wrote an article on Archery Forum about setting the sight extension to a point where it could cancel out any torque.

Bingo! but I can't quite work out how the sight can influence this? I have read the text over and over but not sure what he means?

[Field Archer]

Just done a search on AF and found the link.

http://www.archery-forum.com/viewtopic.php?t=81830

I know it's not quite what you asked RGS, but it may be of interest.

Originally Posted by Field Archer

Just done a search on AF and found the link.

http://www.archery-forum.com/viewtopic.php?t=81830

I know it's not quite what you asked RGS, but it may be of interest.

Cheers, I will give it a look.

[Max]

Originally Posted by geoffretired

If you torque the riser, deliberately or otherwise, the button and arrow rest move very little, but the sight on the end of a long extension, moves much more left or right depending on the direction of torque. It is very similar in effect to adjusting the windage of the sight, without being aware that it has happened.

Geoff - I think I begin to see what is happeing here (having been lurking on RGS's post with interest). This sounds like torque applied while still at full draw (as opposed to torque reaction after loose caused by poor grip or alignment), so in effect pushing the riser to one side or the other and moving the string out of alignment with centershot. So you are in effect aiming off without knowing it? So if I understand what James Park is suggesting, there is some null position at some distance out from the riser that the scope needs to sit to compensate for a particular archer's torque effect?

[geoffretired]

Thanks Max,
It seems we have torque in two different situations here. One at full draw causing the sight to be off the proper line so to speak. And torque as the arrow flies on the string causing off line flight. MMMM. If only we could see the high speed video versions of all these things as they happen.
I know there are times when I have to accept the fact that outcomes can tell us what we want to know. I also know that I'm fascinated by all of this kind of archery/physics/ballistics. I often wish I had access to those video cameras when the tuning goes pear shaped. They are coming down in price I believe!!!!£500,000. They'll be in my price range by 2197. That's a lot of birthdays.
Thanks again
Geoff