Tiller tuning

[2pin]

I have read nuts n bolts of archery. Decided to try tiller tuning my z28. Was talking to my local trusted shop and he told me to tiller tune bow using 1/8 turns on limb bolts. As I understood it tiller tune was with twists on cables. Can someone steer me in right direction? I understand changes from factory specs that twists in cables/string bring but what's the advantage/ disadvantage of using limb bts? Found my groups got wider but sight pattern seemed tighter, as in pin float.

[andy7yo]

Limb bolts are used for tiller tuning.

[woodbooger]

andy7yo is correct

[2pin]

Thnx for the reply. Tried again today and am getting hang of it. Tried different combos of 1/8 to 1/4 turns on each top and bottom limb. Does it matter top or bottom limb when backing bolt out? Seemed to "feel" more stable using bottom. Groups did tighten up but really only noticeable 30-50 yds

[woodbooger]

as long as its noticeable your going in the right direction trial-n-error if you keep it up you may find your sweet spot

[Maybee-R]

Tiller tune doesnt work very well. Not with slaved cams. I think the holding is in your head my self. Ive gone as far as different deflection limbs and no differences. Held the same and shot bullet holes through paper. Did have to adjust the cables for it though. the strong limb was working hard and the weaker limb over did its self. Lasted about a week of everyday shooting. JMO!

[bow_dude]

Randy Ulmer put out an article some time ago about tiller tuning. For about any other type of cam system, tiller tuning is used for fine adjustments raising and lowering your nock set. Especially effective on a single cam. Randy Ulmer uses it for holding on target and I believe it works well for that purpose regardless of the type of cam. He states that if you are drawing back and have to fight the bow to put it on target, then this would help. When you hold on target and your grip is "neutral", the sight should hold on target. If say the top limb is slghtly weaker than the lower, you will fall below the target. If the top limb is slightly stronger than the lower, you will tend to hold above the target. He suggests 1/4 inch turns but no more than 1 full turn. You can accomplish the same thing using stabilizer weights. A combination of the two would really hone in your holding. This type of fine tuning in my mind has more application for target shooting and not so much for hunting setups. However, if you are anal about shooting and setup, it would work well for a hunting setup as long as you don't change the stabilizer system once you tiller tune.

[michaelpierce40]

Tiller tuning is not as effective on parallel limb bows. We tillered all of the older style bows as it was very helpful in getting the bow to hold steady. Elite bows limb bolts are sensitive so I would tiller tune using 1/16th of a turn and take your time.
Mike

[bow_dude]

Mike,
Randy Ulmer didn't mention anything about parallel vrs non parallel limbs. What you state makes sense to me when I think about the direction of the force being exerted comparing the two (parallel vrs non parallel limbs) Thanks for the insight. I personally haven't tried tiller tuning for several years and the last time I did, it was not a parallel limb bow. It made a difference with that bow... just as you stated.

[Maybee-R]

When cams are slaved together you can pull from center or from a few inches either way with out any effects on the cam sync. or actual nock travel. tiller tune will equal its forces out on the limbs when the cams are slaved together.
Your better off adjusting the sync with a twist extra or less in the top cam. to try and get a better hold.. or change the nock height.