The weather is finally giving me a chance to tune my Nitrum 30 and I'm stuck. My fletched and bareshaft are together at 20yds but the bareshaft has a persistent nock high? I've tried adjusted the nock height,arrow rest and it was a bit better but took the arrow so the bottom was above the Berger hole. I started over setting the rest and nocking point and I'm still getting the same result. I had seen Ontarget7 found that the Z5 cams were very sensitive to string weight and on some he had to use less weight to slow the top cam? My strings are the factory Hoyt's. I am no expert but think I am missing something. The impact point in the target is within an inch or less but the nock is about 2-3 inches high?
g_whitcomb
20yds
Also is it normal for the bare shaft to drop more than the fletched ? At 40yds I'm on the money left/right but about a foot lower than fletched?
I am thinking it will need a twist in the cables...
I am sure someone will be on that knows more about Hoyt tuning than I in a bit.
What target is that? It looks nice.
I am sure someone will be on that knows more about Hoyt tuning than I in a bit.
What target is that? It looks nice.
It's in the cam timing , add a twist to the control cam , if it gets worse take back out and then take another out. Keep experimenting and it will get right . Don't mess with the buss cable it looks good.
The reason the bareshaft is lower at longer distances is because that is where it is headed , being point down/tail up.
The reason the bareshaft is lower at longer distances is because that is where it is headed , being point down/tail up.
If I add a twist to the control cable it will put the bottom cam ahead of the top? I'm a half twist of each yoke from both hitting at the same time. The top is ahead by a credit card now. If I take a half out of each yoke cams are perfect but bareshaft doesn't really change.
As far as the shaft hitting low,that makes sense. If they were together at 40 I would be surprised . I've never been able to keep a bareshaft close at 40. Just being in line with the fletched makes me happy.
As far as the shaft hitting low,that makes sense. If they were together at 40 I would be surprised . I've never been able to keep a bareshaft close at 40. Just being in line with the fletched makes me happy.
Not yet. Just throwing it out there[emoji1]
All I can do is remove a half twist of each yoke then my cams are even?
All I can do is remove a half twist of each yoke then my cams are even?
Run middle of arrow through top edge of berger hole running nock level. This should take care of your problem and give you a little more wiggle room for top cam advanced.
Why some might ask ? It's the grip position change, so when they lowered the grip on everything Z5 and newer. By raising the rest you counteract some of that but no where near the top cam advancement like on pre Z5 cam models.
The grip on the Carbons are slightly higher than the aluminum's so you can get away with a little more cam rotation before your bottom cam want's to hit first to clean up your vertical nock travel.
If need be to get the last little bit out if need be, try positioning your arrows stiff plane down to see if that cleans up that last little bit of vertical nock travel.
Last but not least, if you can't get the rest out, add 3 speed nocks to the top cam
Now if none of that works, the last thing is grip.
Just giving you all the scenarios you might come up against.
Why some might ask ? It's the grip position change, so when they lowered the grip on everything Z5 and newer. By raising the rest you counteract some of that but no where near the top cam advancement like on pre Z5 cam models.
The grip on the Carbons are slightly higher than the aluminum's so you can get away with a little more cam rotation before your bottom cam want's to hit first to clean up your vertical nock travel.
If need be to get the last little bit out if need be, try positioning your arrows stiff plane down to see if that cleans up that last little bit of vertical nock travel.
Last but not least, if you can't get the rest out, add 3 speed nocks to the top cam
Now if none of that works, the last thing is grip.
Just giving you all the scenarios you might come up against.
Ok. Confused? Am I to advance the top cam more? Wouldn't this pull the nock up faster and increase nock high? I can either bring them even, advanced by a 1/16, or advance the top more. I wouldn't want the bottom cam advanced more than the top? Maybe I'm overthinking things. I just feel like I'm so close.
I am referring to draw cycle rotation
So if you are tail high bareshaft low the only way to compensate for that would be to untwist the BC or twist the CC, assuming you are nock level, if you don't want to make the adjustments I mentioned above
So if you are tail high bareshaft low the only way to compensate for that would be to untwist the BC or twist the CC, assuming you are nock level, if you don't want to make the adjustments I mentioned above
I reset the rest higher as you suggested and will find out tonight after work how it goes. Thanks for the advice.
Just curious ,say you were bottom of arrow at top of Berger? What would happen? Not that it is but just wondering better high than low, pros/cons?
Shot some tonight and made some small adjustments. Better but still not there? Somehow bareshaft is now impacting right but closer to the fletched. Still a bit nock high but maybe only an inch or less?
Note to self, don't keep bareshafts without field points in with other arrows. They don't fly too well but the penetration was not too bad!
Note to self, don't keep bareshafts without field points in with other arrows. They don't fly too well but the penetration was not too bad!
That could be some of your issue, if that doesn't correct it, add two red brass nocks to the top, right above what is there from factory.
Well after two afternoons of chasing my tail, I believe that I am not capable of shooting a bare shaft. The best I've got was this and it isn't repeatable all the time. I've gone high and low and everywhere in between on the Berger, cams even to advanced, added weight above the factory speed nocks, twisted and untwisted yokes, shortened draw length changed my grip so many times I forgot where I started? [emoji35][emoji35]
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