Can someone please explain positive tiller to me. Do you want the top limb or lower limb stronger.
Lower limb slightly stronger.
Postive tiller means that ( Like Pat said ) the lower limb is slightly stronger. To check if the tiller is positive you measure the distance from the upper and lower end of the riser to the string ( same distance from the center of the bow )...
(http://i861.photobucket.com/albums/ab173/07Hawaii/longbow%20for%20Iris/Tiller.jpg)
... if the lower limb is stronger it will bend less than the upper. Therefore if you have a 'positive tiller' the distance at the upper end of the riser will be bigger than at the lower end of the riser. Usually the difference will be somewhere between 1/4" and 1/8".
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Andy
Much appreciated guys, thanks for the info.