Let Off %, what is best?

[Meddler]

Originally Posted by Rik

Yes, well that's an indication of faulty technique. It's been *measured* that accuracy decreases with long holding time on a compound. There is no fundamental reason why a compound should not get a shot off within the same amount of time as a recurve... The greater mass of a compound is a good reason to not hold it up for longer than is necessary.
Wind... it's a problem for all styles. Many people react poorly to it, longer hold times, decreased scores...

Oh boy... technical stuff....

There are three types of energy systems - CP / Lactic acid / Aerobic. Aerobic means that oxygen is involved in the process, anaerobic means no oxygen is involved.

Aerobic system will kick in after about 15 minutes or so - only really of use if you are running / swimming longer distances.

Lactic acid system is anaerobic and kicks in after 30/60 seconds or so - you can usually feel this for yourself when carrying your tackle case across the field from your car to your place on the shooting line. The burning sensation in the muscles is caused by the build up of lactic acid which is not being washed away by the natural flow of blood through the muscles. Generally lactic acid can be washed away by a gentle warm down after exercise (I'll assume that you have done a warm up before starting to shoot ). Muscle stiffness next day is a dead give away that the lactic acid hasn't been flushed out of the muscle completely.

The CP (or creatine phosphate) system is anaerobic and is the one that is used in short sharp bursts of energy (sprints, etc and it is anaerobic). There is a certain amount of creatine phosphate stored in the muscle at any one time. Think of it like a fuel tank. As you use energy, the store goes down. When you rest the level builds back up, but will typically take up to 45 seconds to get back to "full". The less time you take between shots, the quicker the CP level goes towards empty. Not a major problem on a three arrow end, but can be on a 6 arrow end.

So the longer you take to loose the arrow the less CP you have in the muscles the more likely you are to get into tremors, build up of lactic acid etc. So, 3-5 seconds good, 35 seconds not good.

Meddler, I'm impressed! have a . So, how do we get rid of lactic acid between ends?

[Meddler]

Originally Posted by rgsphoto

Meddler, I'm impressed! have a .

Thanks very much, don't mind if I do...

Originally Posted by rgsphoto

So, how do we get rid of lactic acid between ends?

The lactic acid basically accumulates in the muscle because of the restricted blood flow through the muscle when it contracts. Once the muscle is relaxed and normal blood flow resumes, most of the lactic acid should get flushed out.

The difficulty is that in order to increase the blood flow, you have to raise the heart rate, which may have negative effects on your shooting. Walking briskly to the target may help, but your heart rate will have to come back to your normal shooting level once you are back at the shooting line.

So... I would suggest a warm-up/down routine in between distances should help to flush out the worst of the excess lactic acid. And remember to warm down when you finish shooting for the day.

It might not get rid of all of the lactic acid build up, but it should get rid of the worst of it.

[Astinus]

I personally have great difficulty with deciding how to set up my bow.

Fairly new to the forums, and to archery as well, I own a Hoyt Cybertec 2002 fitted with XT2000 limbs (60-70lb) and they're currently set to about 55lb to offset fatigue. The "inner cam" on my bow and corresponding draw-stop peg position correspond to an 80% let off in the Hoyt compound manual, which I'm finding pretty good, and when I set it to 65% (again using manual for reference) I find there is almost no valley.

Does anyone else have experience with a Hoyt Cybertec fitted with a Versacam who can explain this problem? Any idea how to fix it easily?

Saying that, I may not want to fix it - just shot a personal best in practice today of 567/600 so I'm pretty damn pleased

Originally Posted by Astinus

I personally have great difficulty with deciding how to set up my bow.

Fairly new to the forums, and to archery as well, I own a Hoyt Cybertec 2002 fitted with XT2000 limbs (60-70lb) and they're currently set to about 55lb to offset fatigue. The "inner cam" on my bow and corresponding draw-stop peg position correspond to an 80% let off in the Hoyt compound manual, which I'm finding pretty good, and when I set it to 65% (again using manual for reference) I find there is almost no valley.

Does anyone else have experience with a Hoyt Cybertec fitted with a Versacam who can explain this problem? Any idea how to fix it easily?

Saying that, I may not want to fix it - just shot a personal best in practice today of 567/600 so I'm pretty damn pleased

Hello, check out this site, it seems a common question for your bow. At the end of the day the Cybertec is a hunting bow, but if it works for you, go with it.http://www.huntingnet.com/forum/tm.a...&mpage=1&key=&

[Astinus]

Thanks for the link mate, kinda what I figured ... Am looking into getting a Protec at some point in the future - take advantage of all the Cam and 1/2 stuff Can't justify the expense at the moment, at least not until some of my recurve gear manages to sell.

Originally Posted by Astinus

Thanks for the link mate, kinda what I figured ... Am looking into getting a Protec at some point in the future - take advantage of all the Cam and 1/2 stuff Can't justify the expense at the moment, at least not until some of my recurve gear manages to sell.

No problem. The Cam&1/2 is a great system and very easy to tweak the draw length. I am very pleased with my Ultratec. The Protec is also a great bow too.

[Astinus]

Wonder how easily I could locate a decent condition 2004/5 bow, either an Ultratec or Protec preferably .. I've seen some used stuff floating around the dealers, but it's usually more expensive than a private trade I think. Hrrrm, worth looking into?

Tweaked some more with my bow earlier, just acquired a Carter Insatiable 3 release aid which I think I'm in love with :P Got everything setup and using the 80% letoff as before, has a valley which is just right and the holding weight isn't bad - consistency seems OK.

Originally Posted by Astinus

Wonder how easily I could locate a decent condition 2004/5 bow, either an Ultratec or Protec preferably .. I've seen some used stuff floating around the dealers, but it's usually more expensive than a private trade I think. Hrrrm, worth looking into?

Tweaked some more with my bow earlier, just acquired a Carter Insatiable 3 release aid which I think I'm in love with :P Got everything setup and using the 80% letoff as before, has a valley which is just right and the holding weight isn't bad - consistency seems OK.

Why worry about the year? A Hoyt is basically the same whatever the year, just bits of trim and colour to tart them up and give them an excuse to sell new ones each year. Mine is a 2003 and shoots perfectly. I paid £300 private for it. I do feel a string change once a year and a service is a good Idea on any compound bow. Place a WANTED note in AIUK, you will find a good used bow with a few weeks as long as you are right handed( I'm a lefti), especially now the new sexy very nice Trikon thingy is out. Not sure where you live but there are two Ultratecs in Aardvarcs going for about £295, I think Custom built has a few too. Ask all the dealers in your area too.

[Astinus]

Spoke to CBA and they mostly have ex-sponsored bows going for £450. Slightly outside my budget at the moment Not fussed about the year, want a decent target bow with Cam & 1/2 to replace my Cybertec with Versacam.