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Posted: 3/22/2005 5:38:44 PM EDT
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I didn't see a bow hunters section so I thought I would post it here. I have a Parker Hunters Mag compuund bow and it needs the draw weight ajusted, when I bought it used the guy had cranked the limbs down so the draw weight felt like it was up over 100 lbs. Does anyone have experience with doing this? If so post here and I will include pics as to what I am doing and where I have gotten myself. Thanks 
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Modern compound bow draw weight is adjustable (to a point) by loosening or tightening the limb bolts (that attach the limbs to the riser). There is a limit to how far they can safely be loosened. Start by cranking then all the way in and then work out from there. Most bows can safely be loosened 4-6 revolutions. The rule of thumb is each revolution will lower the weight by 3-5 lbs. Make sure you do the same number of turns for each bolt. I don't know about the Parkers bows specifically so you might want to contact them directly of one of their dealers for more information. BTW, this probably should have been in the Hunting section of the General forum. |
That is exactly what I needed to know, 4-6 revolutions. Thanks a ton!! 
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Before you go buck wild, you need to check the cams. If this unit is a dual cam unit (both ends, with one not perfectly round), then back off the screws a equal amount on each. When you get the time, take the bow down to a smith to have both limbs tensions checked. If one limb is less that the other, it will cause the arrow to be slung out of alingment with the arrow rest and cause increased noise and shorten the life of the limbs (and tear up the cams). Single cam bows are a little better at the limbs out of tune with each other, but still should be checked. If your running a over draw, and straight fletched arrows (no spin), don't even bother trying to set the rest/notch point up. Your not going to get straight launch arrow flight (paper tested) no matter how much you try, even with the notch, rest set dead 90* off the string. The uneven draw string free run release tension caused by the limbs out of tune will distort the arrow shaft (pressure on the rest as the arrow moves down it) and cause distrubed harmonics on the arrow shaft. If your shooting IBO (read less than 6 grams of arrow weight per pound pull) it going even more of a up hill battle that you will never even get close. Bottom line is set the limb tension where you feels works best for you, then take the bow down to the smith to have him equal the limb tension, and square off the notch rest with the rest. If your going to be running a release, and using lower tension rings to hold the notch tight against the stop, have him add a couple more under it for simple replacement (as it wears out, you cut the top one off, and just slide one of the lower units into place). This will keep you from having to pull the draw string every time you need to replace the bottom notch tension ring. Also would be a great time to have him install a peep if you don't have a bow press. If you have any more questions, feel free to IM or E mail me. Added: just checked, you have a single cam bow, but still want to have the limb tension equalied before you set up the notch and rest/over draw for final flight-sight tuning. |
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