[goofy2788]

Since my first 3d tourny I've been debating on adding some poundage to my draw weight to see if I could get more speed out of my set-up. So today I went out and took a few shots with my bow and then deceided to go ahead and give the limb bolts a couple of turns to add around 5 more lbs. Well this is were it gets very confusing for me. After adding weight I went to shoot from 30 yrds and barely hit the target. I don't understand this. At 10yrds the arrows were hitting about 8 inches lower then they were and of course at thirty they were almost a foot lower. So what gives....Why would I get such a decrease in speed when I added more draw weight? (and yes I'm sure I tightened the bolts.)
My bow is a Proline NSX II dual cam. I had it set at 63lbs before I made the adjustment. I know that the sights didn't move but I'm unsure if the peep moved due to this adjustment. When I shot after I had no change in anchor, nor did I notice a difference in my peep sight.

Does anyone have an idea as to why this would happen?

 

[wolfman_73]

maybe uneven tiller? make sure both limbs are turned out the same from max.

 

[goofy2788]

maybe uneven tiller? make sure both limbs are turned out the same from max.

I'm not exactly sure how to do this. I can tell you that I measured the distance between string and riser and points on the limbs after the change and they were all the same. My initial thought was that maybe my cams had came out of timing so I did the measuring. I also had my wife look at the cam position at full draw and they were in the same relative position. Is there something else that I could do to check this?

 

[18javelin]

#1 your nock point moved up
#2 your draw lenghth got shorter, not much, but some
#3 your speed increased but you need to retune the rest and/or nock point.

These should have you back on track..

 

[jacktalkthai]

You might have uneven tiller if one of the bolts is backed out farther than the other. The only way that I know of is to tighten both limb bolts all the way down until you can't tighten them anymore (just like you would do to max out the weight). At that point you can back both of them out the exact same number of turns to reach your desired weight at even tiller. If you back out the upper limb bolt 1/2 turn, back out the lower limb bolt 1/2 turn...and so on.

 

[archerdad]

or your arrow spine might not be strong enough for the new poundage.
i have noticed a loss in speed from a weak arrow on some bows.