In God and guns we trust;
- One nation, under God, indivisible, with liberty and justice for all.
- A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.
2011 Onza 3: 70#, 28.25 draw (AMO), 384 gr arrow, 288 fps
2005 Saber: 70#, same arrow, 250 fps
If I may add my .02 with some schooling I'd like to add that "cam lean" is really a misnomer. Unless the cam is machined incorrectly, bent, the axle holes in the limb are drilled crooked, or an axle is bent a bow doesn't have cam lean. What is going on is that the limb tips are torqued or twisted by the force applied by the use of a cable guard. This twisting gets progressively worse as a bow is drawn because greater force shifts to the cables and away from the string. That's why a bow cannot be adjusted to eliminate cam lean through the whole draw cycle.
What's more, it is more prevalent in shorter bows with larger cams. The bigger the cams are the more leverage imparted to the limbs. The shorter the bow the more acute the angle is fom the cam to the cable guard. Way back in "the good ole days" when bows were much longer (48" or more) cams had to be much smaller to achieve normal draw lengths. Smaller cams meant less leverage on the limb tips. Longer A2A bows meant less severe angle from the cam to the cable guard. That is why cam lean was never an issue. It was so slight we couldn't see it so we didn't worry about it. Out of sight--out of mind.
One thing that "cam lean" can account for is premature serving wear and I've seen this with many bows, Martin included. A little more forethought needs to taken into account by the engineers who design the cams. Make cam grooves a little wider and smooth out the edges. Pearson, one company I once shot for from 2000 to 2004 did a very good job of this. The idler wheel was wider and had a nice, almost V shape to the string groove. Of course a wider wheel or cam means a little more weight on the limbs which means a touch less speed and God Forbid we should lose any speed in this day and age. People would rather replace serving or strings more often than give up 5 fps.
Let's face it gentlmen. We don't live in a perfect world and compound bows are not perfect machines---at least not with the present technology. Besides, without something to complain about life would be very boring.
Last edited by bfisher; 04-09-2013 at 07:21 PM.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver
Dang! bfisher kicking some knowledge!
Last edited by Phantonza; 04-10-2013 at 06:27 AM.
Rytera Nemesis, 2012
Martin Onza 3, 2011
Hoyt CRX 32, 2011 (SOLD)
Martin Phantom II, 2003
Martin 06 Slayer, Nitrous C, shoot thru, 63lb, Quiktune 3000, HAA OL 5519, Beman ICS Hunter
Martin 06 Slayer, Nitrous C, Shoot thru, 55lb, Quiktune 3000, HHA OL 5519 2X, Easton A/C/C
Ben Pearson 1968 'Cougar' 62" 45#s @ 28" recurve, parallel shaft POC, Zwickey 'Eskimo' 2 blade
photo (2).JPGhere is a picture of the top cam, its not the greatest picture but you can see the lean if you look close, its worse up on draw, the angle is bad so this picture isnt a good example of the lean, but as promised i posted the pic. however the issue has been cleared up for me , im not worried about it at the moment. go check out pics of my new bow on the photo session thread