Hunting Washington Forum

Equipment & Gear => Archery Gear => Topic started by: Tjv28 on May 09, 2017, 09:17:36 PM

Title: twist buss cable to increase poundage?
Post by: Tjv28 on May 09, 2017, 09:17:36 PM: I have a hoyt carbon defiant with 55-65lb limbs. I would like to increase the draw weight to 70lbs. New limbs are $250 and it seems a little insane to spend that to gain 5-6 lbs. I'm a lefty and this was the only bow i could get my hands on for the 2016 season. I figured I would be able to max the 65 pounders out and be around 68-69, but it is right at 65lbs. Should i have somebody put extra twists in the buss cables or bite the bullet and get new limbs?
Title: Re: twist buss cable to increase poundage?
Post by: Crunchy on May 09, 2017, 09:21:24 PM: when you add twists to the cable it will take the bow out of timing. the axle to axle will be changed when you add twists. You set the axle to axle by adding or taking away twists. I would look at different limbs before taking the bow out of spec to add poundage. Might want to measure the ATA and see if it is in spec. If it is longer that the ATA you will add twist which will bring it into spec and increase poundage.
Title: Re: twist buss cable to increase poundage?
Post by: demontang on May 09, 2017, 09:31:50 PM: Have a good shop tune it. Cam timing needs to be right, insisting the stirng will increase lbs. But some bows run lower lbs do to limbs.
Title: Re: twist buss cable to increase poundage?
Post by: stickslinger on May 15, 2017, 01:51:44 PM: If you want to shoot a time bomb go for it, just remember some really smart people that get paid alot of money decided that the limbs are rated for that poundage and by ignoring that rating you are gambling that they will not explode. And trust me it hurts when it happens
Title: Re: twist buss cable to increase poundage?
Post by: Jellymon on May 15, 2017, 03:10:38 PM: The majority of bows in spec with the cams in the proper orientation usually pull a couple pounds heavier than thier limbs rating number. So a 65 lb bow will usually be around 67lb maxed out. Completely normal.

Bows also have a spec range. If you look at a spec, like ATA On a Hoyt, it will usually say something like- 33" + or - 1/8". With my tuning with my own Hoyts I have found that they are usually dead on or a couple pounds heavier poundage when the ATA is right on spec.

Now, since a Hoyt is usually a couple pounds heavier right at spec, we still have about 1/8" of wiggle room for the ATA to twist cables/string and still be in spec. So we can twist the cables a couple turns apiece to gain 2-3lbs (to keep cams in synch, buss and control cables usually won't be twisted equally because they are different lengths under unequal loads) and then twist the string to get the cam timing (initial starting point of the cams rotation) back where it needs to be. Once that's done, fine tuning to cam synch may need to be done.

After this your ATA will still be in spec, and poundage will be close, if not at 70lbs. Hoyts limbs are very tough, and this is very safe if you stay within Hoyt's specs. Hoyt uses different (or the same) limb deflections for different poundages, on different bows. A 72 deflection limb may be 70lb on one riser, but 63lbs on another, depending on the limb pocket design. So changing Hoyts limbs this 1/8" is no problem whatsoever. Now you may not be able to reach 70lbs if your limbs are on the lighter side and max out at 63-65lbs. In that case you may only get 67-68 lbs while staying in spec.

Only do this with someone who knows what they are doing. Just putting twists in the cables isn't all there is too it, especially on a Hoyt. You're bow will also need to be retuned.
Title: Re: twist buss cable to increase poundage?
Post by: Special T on May 15, 2017, 04:44:16 PM: That bow shoots so fast do you really think the extra lbs will really make that big a difference? I've 70-75lb bows and love the comfort of 65 especially when it's cold and or I've been sitting for a while and not all limbered up.

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Title: Re: twist buss cable to increase poundage?
Post by: Redbeard on May 16, 2017, 12:20:08 PM: I would keep the bow in spec and just shoot the 65lbs. You do your job and put the broadhead where it needs to go and the broadhead will do its job.
Title: Re: twist buss cable to increase poundage?
Post by: Katmai Guy on May 16, 2017, 01:06:40 PM: I had a complete pass thru on a bull elk this Sept with my Ultratec at 67lbs, don't sweat it.
Title: Re: twist buss cable to increase poundage?
Post by: Gringo31 on May 16, 2017, 01:29:29 PM: Quote
it seems a little insane to spend that to gain 5-6 lbs.
:yeah:

65#'s it is! (just let it be) :twocents: