Lighted Nocks Changing Point of Impact

[Todd_ID]

I wanted to write up a bit of factual information about the lighted nocks since I was one asking for them.  I knew the Front of Center (FOC) would be changing since it adds more weight to the back of the arrow, and I knew the point of impact would change.  Now that I've used them for a while I have some data to pass along.

Easton Axis 340 black 9.5 gpi at 29.25" length from bottom of nock V to end of cut carbon
X-Nock standard is 9 grains
Nockturnal X Lighted Nock is 20-21 grains
3 Blazer fletched
4" of arrow wrap

With 125 grain heads:
Without lighted nocks: 450 grains, 12.8% FOC
With lighted nocks: 462 grains, 11.5% FOC

With 100 grain heads:
Without lighted nocks: 425 grains, 10.7% FOC
With lighted nocks: 437 grains, 9.4% FOC

The end result was that with the lighted nock installed I saw a point of impact shift of 7" higher at 40 yards than without them installed.  My bow is tuned to get broadheads and field points impacting at the same point.

To create the same weight as the lighted nocks, so I don't have to use the battery life, I found that 2.5" of 18 gauge automotive wire folded in half and glued into a standard X nock is the same weight as the Nockturnal nock.

The Nockturnal nocks I bought were red.  I can't see the flight in the full sun, but overcast days are ok.  Morning and evening they shine stellar.  One of the nocks I got had a sticky switch, but I used my pocket knife to run the switch on and off about 30 times, and it started working correctly.  The rest of the nocks worked as advertised.

[IBspoiled]

Good info thanx

[brianb231]

Just to add to this. I shoot a Hoyt Spyder 30 set at 62 lbs and a 29 in Draw. The arrow is a 392Gr Carbon Express maxima 350 hunter with a 100 gr tip. I found that by using the nockturnal lighted insert it shot two inches lower than my traditional nock setup.  For those that are interested.

[RadSav]

Todd - Did you run a set of calipers on the throat and height(c/s) of the two different nocks?  I've been meaning to get out my trigger pull gauge and test the Nocturnals against the MicroLite nocks I've been shooting, but I seem to have misplaced it.  I know different nock c/s and throat dimension show large differences on point of impact for me.  Makes me wonder if that might have something to do with your results and brianb's results being different.  If I ever find my dang trigger gauge I will let you know what I find out.

[Todd_ID]

I haven't checked the physical dimensions yet.  I think the length is the same, but the diameter is certainly different.  The Nockturnal does not fit into the Easton X-nock turning device.  The base of the nock is thicker, but the legs from the V back are the same as an X nock.  I.e., The stuff that makes any contact with the string is the same.

[RadSav]

I haven't played with the X-Nock version.  Only the "S" version.  Maybe I'll have John send me a few "X" and see what I see in comparison to Easton and Bohning's nock.

[Old Dog]

Great info guys.    Keep it coming. 

[Bowcrazy]

    Shooting 55/70 carbon hunters with the green nockturnals and a 125 grain 4 blade slick trick. The new nocks and broadheads fly identical to my regular nocks and field points. The nockturnals look really bright and turn off easy. I am shooting a PSE Stinger @ 70 lbs. and I am shooting just as well as my buddies with Matthews bows.


Bowcrazy

[turkeyfeather]

So far out to 30 yards I haven't had to make any adjustments with the lighted knocks. I am still in the bullseye.

[demontang]

Mine seem to fly the same so far. I can put a broad head lighted nock next to my regular nocks out to 50yds.  I was just playing with them last night

[mountainman]

Ditto here. No change in grouping

[Whitetail freak]

I found that the nockternals shoot different out of mine to, I think it has something to so with the little knob in the nock. I now shoot lumenoks, there alittle less simple but once they are set they are 10x brighter and don't change arrow flight at all out to 120 yards. 

[nocklehead]

Mine seem to fly the same so far. I can put a broad head lighted nock next to my regular nocks out to 50yds.  I was just playing with them last night

I have nocturnals as well and dont have a change in group, carrying and shooting both lighted and not in my quiver right now and both hit the same place.

They sure look cool right before dark, I will definately be using these in the evening hunt, even on my small game arrow.

[CoryTDF]

Just bought two packs of these for my elk hunt. They seem to hit same as my regular nocks. Had one that was really sticky and nearly broke it trying to turn it off. They are still %1000 better than Lumenock as they ALWAYS turn on and have yet to shut off on impact. I had terrible trouble with Lumenocks in the past doing night shoots at 3D shoots and whatnot. They always turned off.

[2MANY]

I see the light!!