3rd Axis Help

[tfitter]

Hi all,
To start, I do not fancy myself as an "elite archery mind"... yet.... however I am trying to understand the concept of 3rd axis and I am beginning to "get it".

My question is about adjusting the Trophy Taker (Option Archery now) Option sight. The third axis adjustment is actually just moving the level bubble. I was under the assumption that adjusting for 3rd axis was moving the actual sight, such as the target sights.

Can someone shed some light on this for me, I would be much appreciative! Just confused.


Thanks again for all of the knowledge provided on this forum.
Tyler

 

[mallacootasmoothie]

It doesn't matter either way, e.g. Spot hogg moves the entire sight ring, axcel moves just the level.

 

[lintond]

It doesn't matter either way, e.g. Spot hogg moves the entire sight ring, axcel moves just the level.

What he said. All you need is for the level to be perpendicular to the bow so that when you aim up/down you don't get a false bubble reading. I like the Hamskea tool for this. IMO the sights that adjust the housing are easier to adjust.


Sent from my iPhone using Tapatalk

 

[Jeff Martin]

The easiest way to adjust your 3rd axis is get a (construction level or laser level) and draw a vertical line on a wall (like a garage wall). Draw your bow, lower your arm like you are shoot down at a steep angle (close to wall meets floor), put your pins on the vertical line. Look at your level. Adjust sight bubble accordingly. On your sight, you will simply be move the bubble level itself until you get the bubble perfect while your pins are on the line.

 

[Tilzbow]

What Jeff said but rather than draw a line on the wall I hang a plumb bob (any weight will work) off the eve of the house or a tree branch and use the string rather than the drawn line.

This doesn't work when the wind is blowing.

 

[tfitter]

Thanks guys for the info, I appreciate it. Kids at the shop got me all screwed up. I kept telling them that a $500 sight would not advertise a false 3rd axis adjustment. I'm glad and thankful for reliable information here. Too much junk to weed through on AT and ppl who think they know what they are talking about.

 

[doverpack12]

I can actually see a possible advantage to a sight that only moves the bubble and not the housing. When you adjust 3rd axis by moving the housing your pins will move left or right also. This means you now have to adjust windage before you can confirm groups from an incline or decline. By just moving the bubble your pins stay where they are sighted in. I cannot say for sure if one is better than the other but really what it comes down to is if your pins allow you to hit where you aim every shot be it flat, inclined or declined at any distance. I know my MBG 3rd axis likes to come loose about mid summer when I am really getting dialed in and usually I don't discover the problem until I have adjusted something from my perfect tune and then I never really get back to that perfect spot by the time the season starts.

 

[jmez]

Once the 3rd axis is set you shouldn't have to confirm groups from an incline or decline. Set all three axis and then sight the bow in, your incline and decline groups should be good as long as it was done correctly. If something moves then reset and a slight gang adjustment should fix it.

I don't understand it very well. I just use the Hamskea tool to set it. Pretty handy little gadget as you attach to your rest and can then set all 3 of the axis with it.

The guys at TruBall/Axcel say you can set the third axis with the sight off the bow. Some say you have to set it at full draw. I'm not sure anyone truly understands it completely. There are some videos on Hamskea web sight explaining the concept. I think Spot Hogg website has some tutorials on it as well.

 

[doverpack12]

I believe you absolutely have to set it with the sight on the bow and at full draw and you are the one drawing your bow. Every riser twists as the bow is drawn and how hard you pull into the wall. You CANNOT account for this any other way. I also use the hamskea easy third axis level.

 

[mallacootasmoothie]

I believe you absolutely have to set it with the sight on the bow and at full draw and you are the one drawing your bow. Every riser twists as the bow is drawn and how hard you pull into the wall. You CANNOT account for this any other way. I also use the hamskea easy third axis level.

I agree, and also use the hamskea easy third axis level.

 

[AGPank]

Hamskea has a video that works with the tool they have. They explain the process of setting the 1st, 2nd, 3rd axis.

 

[Trial153]

3rd axis can only be set at full draw with the sight mounted.

 

[jmez]

I agree it needs to be set at full draw and that is how I do mine.

 

[tfitter]

Thanks again guys. I have soaked up a lot of info here in the last couple days. I'll look into getting the Hamskea tool. I appreciate the awesome feedback. Just can't trust a lot of the bow technicians and hard to do this stuff myself when I don't have the tools/equipment.

 

[Trial153]

While a third axis tool as stated above comes in handy it really isn't needed. You can set it with a plum bob, short level and long level.

 

[camping1601]

So hows a guy set this with a single pin and no tool?

 

[doverpack12]

Camping you will need to find a way to hold a rod or pencil etc. vertical on your bow that you can line up with a plumb bob or vertical line at full draw