Below is from tmo's sticky on hybrid cams in the PSE subforum of the Brand Specific Forum. Good stuff.
b. Let’s talk about twisting and the effect of each move on a hybrid cam;
i. Buss cable- a twist in the buss cable advances the top cam (makes it hit sooner), it lengthens draw length, decreases ATA and increases letoff/valley (assuming timing was even before the twist).
ii. Control cable- a twist in the control cable slows down the top cam, shortens draw length. It’s effect on ATA, valley and letoff are dependant on the others.
iii. String- a twist in the string shortens draw length, valley and decreases letoff. It plays a role in ATA and draw weight but it is secondary to to the buss.
iv. All- a twist out produces the opposite effect.
for any bow that that has a three part rigging system.
1) if the bow has a bowstring
2) if the bow has a Y shaped cable....old timers call this the POWER cable...nowadays folks will call this the buss cable, or the YOKE cable
....the YOKE cable has three end loops...TOP two end loops attach to the top axle, has TWO short legs...and a really really LONG center elg
3) if the bow has a third cable, a "rope" with two ends, this is called the control cable.
The YOKE cable holds the bow together
and the YOKE cable squeezes the limb tips.
When you SQUEEZE the limb tips MORE, this shortens your Axle to Axle length...obviously.
When you SQUEEZE the limb tips MORE, this does several things...
1) makes the draw weight higher, obviously
2) but, this also makes the brace height BIGGER
3) but, this also makes the HOLDING weight drop LOWER
4) but, this also makes the draw LENGTH for the BOW...get a tiny bit LONGER
5) ANYTIME you work the cables to BOOST the draw weight...the holding weight automatically DROPS and the "VALLEY"..FEELS longer
6) ANYTIME you work the cables to BOOST draw weight, which LOWERS holding weight...the DRAW cycle gets, FEELS more AGGRESSIVE
A forum community dedicated to bow and crossbow owners and archery enthusiasts. Come join the discussion about optics, hunting, performance, troubleshooting, styles, reviews, accessories, classifieds, and more!