Center Shot on Helim

Home Forums General Archery Discussion Center Shot on Helim

This topic contains 10 replies, has 7 contributors, and was last updated by gjarcher gjarcher 2 years ago.

Viewing 11 posts - 1 through 11 (of 11 total)
  • Author
    Posts
  • December 9, 2012 at 11:59 pm #497150 Back to Top REPORT
    bfisherman11
    Bfisherman11

    Age: 55
    Joined: 12/23/2008
    Location: IL
    View My Bows
    Anyone know what the starting centershot setting should be on Helim? I set mine at about 11/16 but that left with with a left tear. I did not have a lot of time but it did not seem right that I should move it closer to the riser (typical correction).

    Thanks,
    Bill

    December 10, 2012 at 12:12 am #543426 Back to Top REPORT
    99fatboy
    99fatboy

    Age: 52
    Joined: 2/15/2010
    Location: n.y.
    Photo Gallery
    most all heliums we set up are at least 13/16″ if everything is correct. it may be a torque issue.
    black z7 magnum,tommy hogg,qad,b-stingers, vaportrail: blue smoke triumph,sword,hamskae,b-stingers:desert tactical chill R, tommy hogg,limbdriver pro v,ktech
    December 10, 2012 at 12:24 am #543427 Back to Top REPORT
    bfisherman11
    Bfisherman11

    Age: 55
    Joined: 12/23/2008
    Location: IL
    View My Bows
    gg, Pretty sure Im not torquing, been at this a while. Im thinking I need to check idler lean and adjust center to more like 3/4 (guess). I have not seen any spec’s on this for a Helim. My Legacy is good at 11/16.

    Oh I have a Rip Cord rest.

    Thanks,
    Bill

    December 10, 2012 at 12:37 am #543428 Back to Top REPORT
    99fatboy
    99fatboy

    Age: 52
    Joined: 2/15/2010
    Location: n.y.
    Photo Gallery
    those are possible problems,but tear is showing the need to shove it closer to the riser.you seem confident it’s not you,so i would look for fletching contact and timing issues of rest.it would also be nice to have your arrow specs,draw length and poundage for diagnosis. the helium is quite a different animal than the old legacy.
    black z7 magnum,tommy hogg,qad,b-stingers, vaportrail: blue smoke triumph,sword,hamskae,b-stingers:desert tactical chill R, tommy hogg,limbdriver pro v,ktech
    December 10, 2012 at 1:40 am #543429 Back to Top REPORT
    mck23
    mck23

    Age: 43
    Joined: 11/6/2012
    Location: IN
    most all heliums we set up are at least 13/16″ if everything is correct.

    Agreed! Mine is dead on 13/16″ :thumbup

    December 10, 2012 at 1:52 am #543430 Back to Top REPORT
    lpace
    lpace

    Joined: 11/3/2009
    Mine is just a whisker outside of 13/16″.
    December 10, 2012 at 1:43 pm #543431 Back to Top REPORT
    lunzee
    Lunzee

    Joined: 12/21/2010
    Dead level nock and set at 13/16ths. :thumbup
    December 10, 2012 at 2:01 pm #543432 Back to Top REPORT
    fireman-09
    Fireman 09

    Joined: 6/8/2006
    View My Bows
    13/16″ here.
    If your a right hand shooter and getting a left tear… move your rest to the left[/size:1lhhbspj][/color:1lhhbspj].
    http://mathewsinc.com/media/tech-tips/?page=4#7778
    Try it…you might like it. ;)
    Good luck
    December 10, 2012 at 5:21 pm #543433 Back to Top REPORT
    bfisherman11
    Bfisherman11

    Age: 55
    Joined: 12/23/2008
    Location: IL
    View My Bows
    Makes sense to move it left. I think my initial setup is too close to the riser.

    Thanks,
    Bill

    December 10, 2012 at 8:29 pm #543434 Back to Top REPORT
    99fatboy
    99fatboy

    Age: 52
    Joined: 2/15/2010
    Location: n.y.
    Photo Gallery
    if you have a nok left and you move it left,the tear will get bigger.but do whatever you want. the left tear is caused by the arrow running into the inside prong on the rest,which kicks the tail of the arrow left as it passes thru the rest,which means you would need to move it right for it to line up properly.but,as i said earlier, they like 13/16″,something besides centershot is more than likely your problem. we sold and set up over 100 of these this year,just telling you what our experience is.
    black z7 magnum,tommy hogg,qad,b-stingers, vaportrail: blue smoke triumph,sword,hamskae,b-stingers:desert tactical chill R, tommy hogg,limbdriver pro v,ktech
    December 10, 2012 at 9:04 pm #543435 Back to Top REPORT
    gjarcher
    gjarcher

    Age: 71
    Joined: 10/3/2006
    Location: Colorado
    View My Bows
    Paper tune: #1 shot high-right tear. #2 shot, lowered nock point, right tear. #3 Shot, moved centershot toward riser, slight improvement. #4 shot moved centershot more toward riser, no improvement. #5 shot, moved center shot out away from riser beyond initial setting, tear improved. #6 shot moved centershot out more, near bullet hole.

    The truth is you’ll get a lot of advise, but none of it is 100% correct. Much depends on the idler lean, which also relates to how you grip the bow, the dynamic spine of the arrow, whether the nock orients the stiff side of the spine in the vertical plane or not, whether there is nock pinch or not, and whether there is fletch contact or not.

    First step is always to correct idler lean and eliminate nock pinch.

    Next step is always to verify fletch clearance, then verify rest timing for a drop away, and to eliminate any lateral string deflection due to string pressure on the face.

    A properly spined shaft will always tune easier, but if the shaft is slightly weak, it still is possible to tune for target points if there is no nock pinch and the stiff side, if there is one, is oriented in the vertical plane:

    Note that it is possible to get the centershot so far off the centerline of the powerstroke that the paper test shows the second oscillation of the arrow. This is why it is important to paper test at two distances or more, usually 5′ and 10′ are sufficient. When in doubt, shoot the paper at 1′ … you’ll have to draw the bow then move up to do this, but it will show precisely how the arrow is leaving the launcher.

    What it all boils down to is:
    – Always correct nock height first before adjusting centershot
    – Move centershot in very small increments. If things don’t get better, as in the first pic I posted, then move the centershot in the other direction.

    … hope this helps.

    :thumbup

Viewing 11 posts - 1 through 11 (of 11 total)