It’s time for the dreaded timing and tillering!
String that baby up. I hold it under my foot and draw it back about 100 times. Really. Draw it back slowly at first, then however fast you want to. Every time I make a change to the limb during timing and tillering, I do the same thing and pull the bow back to full draw a bunch to help settle everything before measuring again. Place the bow on the tiller tree and take a look at where you are to begin with. Take your initial measurements and get started.


Use the belt sander to take more off the upper or lower limb as necessary to get the limbs timed or bending uniformly. Sight down the bow from one end to the other while it’s strung to determine if the limb has a tendency to twist in one direction or the other. If it does, take more materiel off of the side that it’s twisting to. Take your time, this may take a few iterations to get it right. Less is more here, go slow. I am trapping the limbs in this picture. I already have the limbs bending pretty evenly so I put the trap in both the upper and lower limbs. I don’t have a given angle. I use good ol’ redneck guestimation here again. I probably have the limbs at close to a 45 degree angle when I’m making the passes on the belt sander to trap my limbs. I have learned that if you trap from the belly to the back of the limbs, you can gain a few FPS of performance. Mine are from the back to the belly on this bow as I usually do. I’ll have to try reversing it in the future. My limb backs are narrower than my limb bellies when I’m done trapping the limbs if that makes more sense.

Once everything is flexing uniformly, check and set tiller (remove materiel evenly from both sides) 1/8” to ¼” for split fingers and dead even for three under.Come on guys, give your oppinion here so we get the best information out there. I put 1/8” positive tiller in my limbs (lower limb has a shorter measurement of 1/8” to ¼”). Measure the longest distance on the upper and lower limbs at a given location. I use mid handle in the arc where I can measure on one of the accent stripes or at the end of the fade outs, to make sure that I’m measuring the same place on both limbs. Sorry guys, I suck at describing this stuff.



Back to the tiller tree to make sure that everything is still bending evenly. If you have flat spots (stronger area of the limb) carefully remove materiel with a rasp and block sanding. Never time or tiller with the bow strung. You can get hurt fast!

Now that the limbs are finished, you can determine final draw weight. I check the weight throughout this process and take more materiel off the limbs if I’m still too heavy during timing and tillering. Actually, I confirming timing, draw weight, and tiller throughout this process over and over. Seems redundant and it is but it’s the way that I confirm everything is where it’s supposed to be.

If you have done it correctly (I may not be doing this correctly!

) you will end up with a nice even profile that starts to bends at mid limb just out from the fade outs and stiffens back up just prior to the limb tips. Small light weight and stiff limb tips equal speed.
It’s hard to see the limb profile in this picture. Maybe you should scroll back up to the full draw tiller tree picture a few above. But these limbs bend evenly, are trapped, have power wedges, positive tiller, and are timed evenly. Now that’s a mouth full! I haven't mentioned it before but the upper limb is built 3/4" longer than the lower also. On my adult bows they are 1" longer.
