If the cam is under rotated you can put a twist in the buss or untwist the control, I determine which I do by the draw weight and draw length of the bow. Now is the time to adjust the draw stop timing, using a draw board or similar device (you can draw the bow and have someone else look at the cams) when the bottom cam’s draw stop is just touching the buss cable, the control cable should lay flat in the groove of the top cam. If the cams are in sync at this point the reference holes will be equidistance from their respective cables and the tiller will be even (limbs bottomed out). The control cable should be used to sync the rotation of the cams while doing this. To adjust the cams, I back the string off until I’m sure it isn’t affecting the axle to axle (usually ten twists will do) then adjust the buss cable to bring the axle to axle measurement to a ¼” longer than the specifications for that particular cam/limb combination (see Hoyt tune charts). I find that tiller is a more precise indicator of cam sync if the limbs are bottomed out the tiller will reflect the position of the cams better than the reference holes (marks). The reference marks or holes (depending on the cam) are there to provide a visual reference to cam synchronization not draw stop timing. The control cable (slave) ties the two cams together so that they rotate at the required speeds. The string is for all practical purposes, just along for the ride, the buss cable (yoke) controls the bow, and it is used to set the axle to axle (limb) preload and takes most of the weight of the limb deflection at full draw. It is possible to have the cams in sync, but not in time and visa versa. The cams need to be in synchronization and in draw stop timing these are two entirely different issues but interconnected. The timing system on the hybrid cams is somewhat different from other systems.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2022
Categories |