Bow Tuning Guide…Updated!! -As Requested!!

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This topic contains 311 replies, has 80 contributors, and was last updated by bow-drawn Bow Drawn 2 weeks ago.

Viewing 15 posts - 196 through 210 (of 312 total)
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  • April 25, 2012 at 3:50 pm #531418 Back to Top REPORT
    l-o-s-t-arrow
    L.O.S.T.Arrow

    Joined: 5/16/2006
    Location: Alberta

    This really helped! Thanks!

    One question for Neil, my wheel and straightedge look exactly like the pictures but when I draw back the string seems to be coming off straight. Even had a buddy look at it. I might throw a couple twists in and see what it does but I’m a little hesitate being that it’s shooting pretty good even at farther distances and I’d hate to screw everything up. Is that normal? Or am I just possibly not looking at it right?

    Since season is pretty far away :D I might screw around with it this weekend and see what happens.[/quote:1zhxsqjl]

    :D If your straightedge/arrow crosses string at nock point chances are the lean is out and your friend is cross eyed :^O

    seriously bring it to approx an 1/8 left of string so it doesnt cross string and have another look at it…I will bet it will look perfect and shoot better..

    once it looks correct tune for accuracy…sometimes that needs a twist right or left yoke..

    when arrow crosses string that much there is a chance that string can miss-track idler for a wreak if it gets any worse :D

    better safe than sorry

    Neil

    April 26, 2012 at 3:57 am #531419 Back to Top REPORT
    curtyj23
    curtyj23

    Joined: 3/14/2012
    Location: Wyoming
    Fair enough! I’ll give her a try, then should I set rest back at 13/16″ and go from there?

    Also looking from the top of the bow down to the cam, which way should I be twisting these yokes? Counter-clock wise?

    April 26, 2012 at 2:13 pm #531420 Back to Top REPORT
    l-o-s-t-arrow
    L.O.S.T.Arrow

    Joined: 5/16/2006
    Location: Alberta

    Fair enough! I’ll give her a try, then should I set rest back at 13/16″ and go from there?

    Also looking from the top of the bow down to the cam, which way should I be twisting these yokes? Counter-clock wise?[/quote:mw5lahwx]

    :D I would reset rest at 13/16 and- re spec tune…shoot a couple dozen than set yokes…

    twist yoke counter of string twists…strings are usually twisted clockwise I twist yokes counter clock wise….or to bows left ….standing behind idler looking down bow with cam furthest from you that would be to the right for bows left…

    clear like mud :^O

    Neil

    April 26, 2012 at 2:31 pm #531421 Back to Top REPORT

    murinus

    Joined: 2/5/2012
    I have a Mathews Icon and the ATA is 37 1/2″. According to specs, it should be 36 7/8″. Should I just keep twisting the cable to shorten the ATA?

    I just added like 9 twists to the cable and it only shortened by 1/4″. Would there be a problem if the cables are over twisted?

    Stings and cables are stock Mathews strings.

    April 26, 2012 at 3:01 pm #531422 Back to Top REPORT
    l-o-s-t-arrow
    L.O.S.T.Arrow

    Joined: 5/16/2006
    Location: Alberta

    I have a Mathews Icon and the ATA is 37 1/2″. According to specs, it should be 36 7/8″. Should I just keep twisting the cable to shorten the ATA?

    I just added like 9 twists to the cable and it only shortened by 1/4″. Would there be a problem if the cables are over twisted?

    Stings and cables are stock Mathews strings.[/quote:3jolmgzl]

    :D :welcome to the forum…

    Pending on how old the strings are..by what your saying it sounds like they are older and have creeped or stretched substantially…if strings are more than four years old I would recommend changing them out with new ones…

    both the string and cable can be over twisted for sure…with the cable being the most concern as the yokes twist on themselves…

    twist each end of string as you twist cable to shorten the ATA, keeping other specs in mind and spec also as you twist…usually the rate is two twist each end of string for every one on cable…because the cable moves specs quickly moving them both together will also bring it in quicker and keeps specs balanced as you do…

    :D
    Neil

    April 26, 2012 at 3:44 pm #531423 Back to Top REPORT

    murinus

    Joined: 2/5/2012

    :D :welcome to the forum…

    Pending on how old the strings are..by what your saying it sounds like they are older and have creeped or stretched substantially…if strings are more than four years old I would recommend changing them out with new ones…

    both the string and cable can be over twisted for sure…with the cable being the most concern as the yokes twist on themselves…

    twist each end of string as you twist cable to shorten the ATA, keeping other specs in mind and spec also as you twist…usually the rate is two twist each end of string for every one on cable…because the cable moves specs quickly moving them both together will also bring it in quicker and keeps specs balanced as you do…

    :D
    Neil[/quote:yw782a1v]

    Thanks for the welcome.

    I only used the bow for a few months before I had to stop shooting. Bow was kept in the store for years and I only tried setting it up again recently.

    In this case, since the bow was probably shot less than 1000 times, would you still recommend changing the strings? The local dealer had a look at it last month and he said the strings should still be good.

    I will try twisting the strings and cables some more to bring it within specs.
    :thumbup

    April 26, 2012 at 4:43 pm #531424 Back to Top REPORT
    l-o-s-t-arrow
    L.O.S.T.Arrow

    Joined: 5/16/2006
    Location: Alberta

    :D :welcome to the forum…

    Pending on how old the strings are..by what your saying it sounds like they are older and have creeped or stretched substantially…if strings are more than four years old I would recommend changing them out with new ones…

    both the string and cable can be over twisted for sure…with the cable being the most concern as the yokes twist on themselves…

    twist each end of string as you twist cable to shorten the ATA, keeping other specs in mind and spec also as you twist…usually the rate is two twist each end of string for every one on cable…because the cable moves specs quickly moving them both together will also bring it in quicker and keeps specs balanced as you do…

    :D
    Neil[/quote:p86xhqqy]

    Thanks for the welcome.

    I only used the bow for a few months before I had to stop shooting. Bow was kept in the store for years and I only tried setting it up again recently.

    In this case, since the bow was probably shot less than 1000 times, would you still recommend changing the strings? The local dealer had a look at it last month and he said the strings should still be good.

    I will try twisting the strings and cables some more to bring it within specs.
    :thumbup[/quote:p86xhqqy]

    :D String may be ok but is at least 8 years old if its the original stock string..the Icon was 2002-2004…

    personally i would change them out…however one can still try twisting strings and keep an eye on the strings for now…but i would change ASAP

    JMHO
    :D
    Neil

    May 9, 2012 at 3:59 am #531425 Back to Top REPORT
    roadhazardj76
    roadhazardj76

    Age: 33
    Joined: 7/28/2010
    Location: Wisconsin
    Whats it gonna take to get this a sticky.
    "This isn't gonna be pretty"
    June 5, 2012 at 3:46 pm #531426 Back to Top REPORT
    planebow
    planebow

    Joined: 11/3/2008
    View My Bows
    TTT
    June 5, 2012 at 10:11 pm #531427 Back to Top REPORT
    roadhazardj76
    roadhazardj76

    Age: 33
    Joined: 7/28/2010
    Location: Wisconsin
    Neil I guess you goofy canucks must have a little smarts. I just tuned my 10 mathews with this guide and everyone has been great. The shooters have all loved the results. Thanks again for this. :thumbup
    "This isn't gonna be pretty"
    June 11, 2012 at 5:12 pm #531428 Back to Top REPORT
    l-o-s-t-arrow
    L.O.S.T.Arrow

    Joined: 5/16/2006
    Location: Alberta
    Neil I guess you goofy canucks must have a little smarts. I just tuned my 10 mathews with this guide and everyone has been great. The shooters have all loved the results. Thanks again for this. :thumbup

    :D :^O Goofy…………

    June 19, 2012 at 5:50 pm #531429 Back to Top REPORT
    l-o-s-t-arrow
    L.O.S.T.Arrow

    Joined: 5/16/2006
    Location: Alberta
    :D Brian/gjarcher posted this on another post and described it so well I just had to post it here as an add in…

    this answers the question so well…

    Why do I flinch…and/or launch an uncontrolled arrow?

    Draw Length[/b].

    Not necessarily the cam’s DL, but your [/u:3hn4hmby]DL which includes bow spec’s (string stretch), how the release is setup if using a wrist strap with adjustable head length and the D-Loop length if using one. If the DL is too short, you must keep positive pull against the draw stop/wall, otherwise the cam will creep out of the valley and the attempt to recover/prevent will fire the release, hence a ‘flinch’. If the DL is too long, there is a tendency to relax the longer it takes to get the shot off, the cam creeps out of the valley, and the same sequence of attempting to recover/prevent the shot, thus a ‘flinch’. Usually there has been a change in bow specs (string stretch), replacement of string or D-Loop, or change of release which proceeds either the ‘flinch’ or cures it…all involving a small change in DL.

    - Target Panic/Mental.

    Attempting to be ultra-precise and controlling/timing the release firing sets up a cycle of “shoot, don’t shoot” and tripping the release trigger becomes the focus of the conscious mind to the exclusion of maintaining form and posture. Attempting an interrupt of the “Shoot” command as the sight wanders off target or the attempt to recover/prevent the shot caused by creeping results in a ‘flinch’. It takes a psychologist to figure out what is really happening, but somewhere towards a cure one needs to reprogram the mental shot cycle and shift most if not all to the subconscious mind.

    In the first case, it is fairly easy to correct the bow specs, loop length, or adjust the wrist strap to get a correct DL. Cams with short valleys are more critical of incorrect DL, even as little as 1/8th inch.

    In the second case, it is not so easy. The first step is to setup the bow so that it has a stable sight picture, which may include DL adjustments and changes to the stabilizer. This doesn’t cure anything, just eliminates the ‘noise’ in the problem. I have had some success but not always by teaching back tension shot execution and breath control to fire the release. I believe this may have some success because breathing is a subconscious act disengaging the mind from consciously firing the release.
    Back tension execution is normally described as shifting tension to a different group of back muscles which will rotate the scapula and draw arm. However, I find for many this also requires a conscious effort and is easily coupled with the conscious mind trying to time the firing of the release. Alternatively, I use chest expansion along with shifting holding weight to the back muscles to accomplish the scapula/draw arm rotation to fire the release and replace the ‘push-pull’ motion. This requires exhaling when drawing the bow, shifting/relaxing the bow arm and draw arm muscles as the load shifts to the back muscles, normal breathing while settling the sight/aiming, and then inhaling when committing to the shot. While the decision to commit to the shot by inhaling is a conscious effort, the act of inhaling is not, hence the shot execution is controlled, although the firing is not timed. This allows the conscious mind to focus on aiming while achieving a ‘surprise’ release.

    … hope this helps. [=}=][/quote:3hn4hmby]

    :D :thumbup

    Neil

    June 19, 2012 at 9:13 pm #531430 Back to Top REPORT
    gjarcher
    gjarcher

    Age: 71
    Joined: 10/3/2006
    Location: Colorado
    View My Bows

    … Bow was kept in the store for years and I only tried setting it up again recently.

    In this case, since the bow was probably shot less than 1000 times, would you still recommend changing the strings? The local dealer had a look at it last month and he said the strings should still be good.
    [/quote:zetj9jjt]
    I would definitely recommend changing the strings even if they had never been shot but left under tension for several years, especially if they had been exposed to natural light during that time.

    Each strand of the bowstring consists of many small fibers which are twisted on one another. When under tension, the strands slip and slowly elongate. As they elongate, the strand diameter grows smaller, and the cross-sectional strength becomes less. A typical bowstring is made up of 16 to 22 strands, which are also twisted upon each other. These strands can only be twisted so much before they begin to ‘bite’ into each other, effectively reducing the overall strength of the string. It is recommended to have no more than one twist in one inch of string.

    If your string requires more than one twist in one inch to obtain the correct length and bow specs, it most likely has lost at least 30% of its original strength. Will the string break? … probably not … but any safety margin is gone and it won’t be long before the string needs to be twisted up some more.

    Also, as the string stretches, the factory impregnated lubrication is squeezed out and the string becomes dry (brittle). Coupled with exposure to UV light (sunlight), a dry string will break individual strands. The breaks usually occur at places where the string makes sharp angles, like the nock point and the cam break over. Both of these places are under serving and can not be inspected except by removing serving. Thin areas or lumpy areas under serving are an indication of broken strands.

    All in all, for a bow that has been stored for years, if I were your dealer, I would break it down, clean the limb bolts and limb pocket, lubricate them, pull the axles, clean and lubricate them, check the cam/idler/roller guard bearing (sealed), reassemble the bow with a new set of string and cable. In fact, I do this with my own bows every two years when I replace strings…Why? … because I have learned the hard way. [-(

    June 21, 2012 at 3:11 pm #531431 Back to Top REPORT
    l-o-s-t-arrow
    L.O.S.T.Arrow

    Joined: 5/16/2006
    Location: Alberta
    :D
    Due to many requests for this I thought I would post this here for everyone, I thought we had it posted somewhere but couldnt find it…


    INSTALLING AND TYING IN A PEEP[/u:3oqxp7jw]

    :D
    This is the method we use with most, the G5 Meta and IMHO by far the most secure and best way to tie in a peep hands down..

    NOTE*…It is recommended that a press is used to install the peep into string to prevent damage to string under tension!

    First install the peep in the string using the side grooves. Then start serving the same way you would do your center serving. Approximately 1 and 1/4 inch above the peep, continue for 1/4 inch. [Pic # 1]

    Wrap the serving around one side of the bow string three or four times. When you get to the peep start wrapping the serving around the serving center groove of the peep. [Pic #2 ]

    Wrap the serving around the center groove three or four times. [Pic #3 ]

    Stop wrapping on the opposite side from which you started. Take the serving and go around the string once above the peep. Pull the serving tight and then wrap the serving around the other side of the bow string three or four times. At about 1 inch below the peep finish by back serving in the same way you would finish your center serving. [Pic #4 ]

    You now have a correctly tied in peep.

    This is a method of tying in your peep sight. This method will work for any type of peep. Only difference is on some style of peeps you will have to tie in one section above and one section of serving below. The serving will not wrap around the peep as they may have no center groove on peep…Note!! If you do not have serving thread dental floss will work quite well.

    :D
    Neil[/b:3oqxp7jw]

    June 22, 2012 at 8:14 pm #531432 Back to Top REPORT
    bow-drawn
    Bow Drawn

    Age: 63
    Joined: 11/14/2007
    Location: Ohio
    View My Bows
    Neil you keep building this and they will come —– this is making a great technical manual. :thumbup :thumbup :thumbup :thumbup :thumbup
Viewing 15 posts - 196 through 210 (of 312 total)