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Eliminating bow torque: as requested by Noel

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  • Eliminating bow torque

    If you twist the bow counter-clockwise (as seen from above), the arrow will go to the left of centre.
    However, with the sight out in front of the bow, twisting the bow counter-clockwise will move the sight pin to the left, and hence when you centre it on the target the bow will be aimed to the right.
    So, we have two effects working in the opposite direction and it is posible they could be made to cancel. That is: if the sight extension is the correct length, the amount you aim off to the right can exactly cancel out the effect of the bow torque.
    With my sight extension all the way in, I can then shoot a shot with no torque applied to the bow and get a 10 on the indoor range. When I then twist the bow counter-clockwise considerably I can miss the target altogether to the left. Then, with my sight extension about 22cm out in front of the bow I can get the "torqued arrow" in the 10 ring together with the "untorqued arrow". That is, with that sight extension the cancelation is exact.
    The beauty is that once I have done this on the indoor range I can then go to 90M, shoot one without torque into the 10 ring, twist the bow a large amount for the next shot and also get it in the 10 ring. That is: once you have cancelled out the torque for one distance it is fixed for them all.
    If you have the sight extension too far out it over-corrects. So, you need to experiement a little to find the extension that is best for you.
    Just one thing you need to be aware of in doing the testing (no, two things actually):
    1. Do not twist the bow so much that the string comes off - very ugly!
    2. If you are using a shoot through rest you may find that when you twist the bow you get fletch contact with the launcher and this can give you false results.
    Try it out - it really works!!! Never again will you lose points through twisting the bow.

    I do have some very good pictures of this in my book "Mastering Compound Bows", available through Marcus.

    • Guest's Avatar
      #18
      Guest commented
      Editing a comment
      Tons of knowledge expressed in this article. Thank you got this little golden nugget, I'm going to apply this myself.

      http://kidsbowandarrow.com

    • Young1
      #19
      Young1 commented
      Editing a comment
      I just want to open this thread again,
      I had the pleasure of shooting with Marcus, Pete, Troy and John, Paul, Chuck and Gulvinder at the recent IFAA Nationals at Sale.
      Despite having a lot of confidence in my Bow and my sight setting - To much in fact. I was pushing a lot of arrows out to the right (Left hander). I was so reluctant to change my sight as it had previously proven it's self each morning on the practice butts and prior to the event. But it doesn't take much to push out into the 4. On the last evening around the fire the topic of torque tuning came up, it was something I had read about when I first started with my compound but had forgotten about as my current ( at the time my sight setup put me in the ball park and I had very little torque issues). I mentioned it on the range on the last day and Marcus reminded me of this thread. Brings me to my set-up for Sale VIC. Small peep for greater clarity --> Lengthen sight bar to circle the scope ---> greater torque effect.
      Now the guys above may read this and I whole heartedly agree I had more going on then a little bit of torque,
      But since returning I have taken on some of the advice given to me and got a larger peep and moved my sight bar back, the process takes about 4 ends of 6 arrows and has removed so many lefts and rights (particularly rights), that I thought it was worth sharing again.

      PS. I have also put on my new stiffer stabilisers- but thats another story.

      steve

    • Cryptic
      #20
      Cryptic commented
      Editing a comment
      Originally posted by Young1
      But since returning I have taken on some of the advice given to me and got a larger peep and moved my sight bar back, the process takes about 4 ends of 6 arrows and has removed so many lefts and rights (particularly rights), that I thought it was worth sharing again.
      I was experimenting with this yesterday too. I was also getting right misses (right handed) but moved my scope out further. Although it hasn't eliminated the problem completely it certainly has tidied up the groups a bit.
    Posting comments is disabled.

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  • Eliminating bow torque
    James Park
    If you twist the bow counter-clockwise (as seen from above), the arrow will go to the left of centre. However, with the sight out in front of the bow, twisting the bow counter-clockwise will move the sight pin to the left, and hence when you centre it on the target the bow will be aimed to the right. So, we have two effects working in the opposite direction and it is posible they could be made to cancel. That is: if the sight extension is the correct length, the amount you aim off to the right can exactly cancel out the effect of the bow torque. With my sight...
    18th September 2013, 01:09 PM
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