where to measure nock height

[Bladepeek]

We had an interesting discussion going there for a bit on where to measure the nock height. Sort of died, unfortunately. I agree the obvious best height is where you get proper arrow flight but it would be nice to know where people are measuring from.

When we talk about brace height, most of us seem to be measuring to the deepest part of the grip.

I thought I understood what people were talking about when they discussed nock height. Now I don't. Is there a generally accepted standard? Bottom of the arrow nock, bottom of the upper (if 2) nocking points? What say the terminology experts?

[BOWMARKS]

Bottom of the upper nocking point.

[Bladepeek]

That's where I've been measuring mine with a bow square. Just wondered if there are other standards like there are for measuring draw length.

[ChuckC]

A bow square allows you to visualize a point on the string exactly even with the touch point of the arrow rest, the location where the arrow launches from. This is zero location.  

Remember, an arrow nock has thickness.  If you place a nock point at zero location, the upper surface of the arrow nock will be below that and your arrow will not be 90 degrees to the string.  If the arrow nock is one quarter inch thick, the nock point must be one quarter inch above zero for the arrow to be sitting straight. .  90 degrees to the string.  

Most of us nock our arrows at that or more above zero.  When it is stated the nock point is 3/8" high, it is 3/8" above the zero mark.

ChuckC

[stujay]

As Bowmarks and chuckc said.

[Charlie Lamb]

As long as "you" standardize how you measure nocking point height "you" won't have any problems.

I always figured the most accurate measure was from "level" (from top of arrow rest...bottom of shaft on rest) to bottom of nock on the string.

This illustration shows that relationship. Whether you choose to nock above the nocking point or below is moot.  

[Swamp Yankee]

Whoa, you asked two questions in one back there!  Nock height is pretty much described above, but by refering to the deepest part of the grip, I suspect you're asking how to measure brace height.  Brace height is the distance from the deepest part of the grip to the closed point on the string with the bow strung.  Nock height is the distance from the point on the string 90 degrees from the arrow shelf, to the bottom of the nock on the string.  Nocking point height is the distance from the same 90 degree point to the arrow side of the nocking point on the string.

[Night Wing]

I'll generally agree with the statements above, but not entirely agree because there are variables which haven't been said.

Sometimes nock height has to be higher in order to accommodate those archers who shoot three fingers under from those who shoot split finger; one over, two under.

The diameter of the shaft needs to be taken into account too. I shoot 22/64" diameter aluminum arrows. If I shot the nocking point in the above photo, my large diameter arrow would jump up after arrow release and and I could easily see the upward jump in flight.

Since I shoot split finger and a large diameter arrow, my nocking point is set at 5/8" high.

[Bladepeek]

Swamp Yankee, what I said was what you said - that I understood brace height was measured to the deepest part of the grip and that seems to be standard. Draw length seems to be standard - from the bottom of the nock to the back of the bow. I referred to a previous post where were varying descriptions of nock height measurement. I understand how to measure it for my use (from zero level with top of shelf to the bottom of my upper nock point). I was wondering if there is a specified standard - distance from zero to the middle of the arrow nock, top of the arrow nock, or what). I will continue to measure to the bottom of my upper nock point, but after thinking about it a bit with people using tie points above, below, or both, it might be most specific to measure to the center of the arrow nock. Not that I will.

[Bud B.]

I guess it really matters how you measure for you like Charlie said, but, I was measured at an archery shop recently who measures draw length from full drawn anchor to belly of bow. I have always measured it to the back of the bow as have everyone else (shop techs) that's ever measured me.

I eyeball nock placement and affix adjustable string nocks above and below arrow nock then adjust to get good flight. It's roughly 5/8" to 7/8" above 90 degrees for me.

[Swamp Yankee]

Bladepeek,
Sorry, I sorta added 1+1 and got 3 on that one.
I've always seen nocking height measured from the 90 degree point to the bottom of the nocking point (with the nocking point located above the arrow); which is (was?) the AMO standard.  It is confusing because some people refer to a nocking point height but measure differently.

[metsastaja]