2014 Ontario Indoor 10-ring Target Championship

IMG_7714All this week, from February 15th to February 23th, clubs across Ontario are hosting the mail-in scoring tournament. The 10-ring target championship is an indoor FITA tournament and is the standard format for the Canadian National Indoor Championships and all World Indoor Championships. The tournament follows standard FITA rules using a 10-ring 40cm target ( 60 cm for Cub and Pre-cub Recurve) with two rings each of Gold, Red, Blue, Black and White and everyone shooting from 18M. Consistent archers may choose to use a vertical 3 spot to avoid breaking arrows and nocks.

Yesterday, I shot in my 9th Provincial Indoor 10-ring Target Championship. Although I have not always won a medal, I have always enjoyed it and this year was no exception. Being away at university and focusing on my education and career development, I was unable to participate in the Provincial Indoor Field Championship. That aside, I have been able to train. Redeemer has been extremely generous to afford me the gym a couple of days a week to train and practice. I have been fortunate enough to be able to co-ordinate some virtual training time with my awesome coach Kathy Millar via SKYPE. That aside, archery is a social sport and although it has been great to keep shooting, what I really missed was shooting with sister, my little brothers (both who are not little anymore) and my archery family. I had a lot of fun shooting, joking around and spending time with my family and friends.

If you live in Ontario and have never competed in an indoor target championship, check out the Ontario Association of Archer’s website for host site and dates near you. Hurry as pre-registration is usually required.

Advertisements

2013 OFSAA

ofsaa_kcvi_2012The Ontario High School Archery Invitational Tournament, a sanctioned Ontario Federation of School Athletic Associations (OFSAA) event is once again being hosted by Richmond Green Community Sports Centre. To my knowledge, Ontario is the only province in Canada offering a high school archery championship. I am very happy the organizers have decided to move forward with the event, since it is a good stepping-stone tournament for archers in their development into competitive archery.

Last year’s tournament saw over 440 archers compete in four divisions. Both boys and girls in Olympic recurve, Standard (one-piece fibreglass bows) shooting on a 60cm face, and compound fingers and compound release shooting on 40cm faces with everyone at 18m. This year compound bow and standard divisions compete on Wednesday, May 15th and all Olympic recurve divisions compete on Thursday, May 16th.

Participation is expected to be slightly less this year because of the Ontario Teachers strike impact on high-school clubs. However, if you are interested in participating in the event, please contact your high-school archery coach to find out if they are sending a team to the event and get registered.

Ontario Provincial Indoor 10-Ring Championship

OLYMPUS DIGITAL CAMERAFrom February 16th to February 24th Ontario will be holding the second of the two annual indoor provincial championships, the indoor 10-ring Target Championships. Similar to the indoor Field Championships, this annual tournament is hosted by many sites across the province with mail-in scoring. It was at  this tournament that I won my very first medal at 12 years old, although I didn’t find out until two-months later at my archery club’s Annual Awards Ceremony because my parents wanted it to be a surprise.

The target championship is an indoor FITA tournament and is the standard format for the Canadain National Indoor Championships and all World Indoor Championships. The tournament follows standard FITA rules using a 10-ring 40cm target ( 60 cm for Cub and Pre-cub Recurve) with two rings each of Gold, Red, Blue, Black and White and everyone shooting from 18M. Consistent archers may choose to use a vertical 3 spot to avoid breaking arrows and nocks. A vertical 3-spot is also mandatory for all Indoor World Championships.

FITA_Target

With mail-in tournaments there are no elimination rounds where archers have head-to-head competitions. With the updated FITA target faces in 2012 there is no X ring anymore therefore ties can happen.

This tournament is typically the start of the premier shooting period in Ontario with the national indoor championships at the beginning of March and then COPARCO Multi-national Indoor Championships of Americas (North and South America) mail-in championship to follow. If you live in Ontario and have never competed in an indoor target championships, check out the Ontario Association of Archer’s website for host site and dates near you.

Arrows Series – Part 4: Spine, Flex and Stiffness

Before we discuss the topic of arrow spine, for proper safety and best performance, arrows need to match your entire bow setup. If you change draw weight, draw length, limbs, riser size, etc. this will affect you arrows. You may need to adjust the arrow length or require different arrows.

Arrow Myth:  An arrow is always straight.

Arrows SHOULD be perfectly straight when not in motion. However, when an arrow is released the force applied from the string causes the arrow shaft to be compressed against the resistant static weight of the arrow point and therefore bends.

Newton’s First Law of Motion: Every object in a state of uniform motion (rest) tends to remain in that state of motion (rest) unless an external force is applied to it.

Since the force applied is greater than the  resistance (weight of the tip), the arrow is propelled forward, and the shaft continues to flex and oscillate as it straightens itself. Arrow shafts that are either too stiff or too flexible will not fly well and will impact the accuracy of your shots or fail causing damage and/or injury. Therefore, we need to manage the flex properly so the arrow does not make any contact with the bow, or your arrow flight will be affected.

Important Tip: Arrow spine refers to the arrow shaft’s degree of stiffness (how much the arrow resists being bent) and is called spine deflection.

Basic Rule 1:  Shorter arrows act stiffer and longer arrows act more flexible.

Basic Rule 2: Powerful bows require stiffer arrows and less powerful bows require shafts that are more flexible.

Basic Rule 3: The heavier the tip equals greater the resistance, therefore the greater amount of compression.  So, a heavier tip causes the arrow to flex more and a lighter tip increase the stiffness.

According to the American Society for Testing and Materials (ASTM) the modern standards (ASTM F2031-05) an arrow’s official spine deflection is measured by hanging a 1.94 lb. weight in the center of a 28″ suspended section of the arrow shaft and is used for aluminum and carbon fiber arrows. (I believe original AMO standard has a basic guide to use for wood arrows spine determination and uses of 2 lb. and 26” section for standard measurement.) The actual distance the 1.94 lb. weight causes the shaft to sag down is the arrow’s actual spine deflection

For example, if a 1.94 lb. weight causes the center of a 28″ arrow to bend down 1/2 inch (.500″) the spine deflection would be .500″.  Stiffer arrows will bend less and more flexible arrows with bend more.

Almost every arrow manufacturer has its own numbering system and there are no universally agreed spine sizes among the various arrow manufacturers. Simply, the lower the deflection measurement equates to a stiffer arrow and higher the deflection measurement the more flexible the arrow. Manufacturers can number, size, and market their arrows anyway they want, as long as they provide the deflection data and test using the industry standard method.

Fortunately for us the engineers have already done the math for us and manufacturers provide spine selection charts. You are able to select an arrow based on your draw length and draw weight.

So when selecting arrows a good rule of thumb is that lighter draw weight, shorter draw length and/or lighter tip weight equals LESS arrow spine OR heavier draw weight, longer draw length and/or heavier tip weight equals MORE arrow spine.

Arrows Series – Part 3: Draw Weight

Obviously, force is required to move the arrow forward off the bow and it is generated from the tension of the limbs through the bowstring. Therefore, when purchasing arrows you need to know your draw weight so you can purchase the correct corresponding spine size for best performance. Limbs stiffness is determined by the amount of force, measured in pounds, required to draw the bow to a 28” draw length as outlined in the following Archery Trade Association (ATA) standard.

AMO BOW WEIGHT STANDARD

For Conventional Bows

Bow weight is the force required to draw the nocking point of the bow string a given distance from the pivot point of the bow grip (or the theoretical vertical projection of a tangency line to the pivot point parallel to the string). Draw length from pivot point shall be designated as DLPP and shall be referred to as TRUE

DRAW LENGTH.

For the purpose of uniform bow weight designation, bow weight is the force required to draw the bow string 26 1/4” from the pivot point. This weight will be marked on bow as being taken at 28” draw (26 1/4” plus 1 3/4” = 28”) See DRAW LENGTH STANDARD.

EXAMPLE: Weight Adjustment Range: 45/55 lbs. Weight Set At: 50 lbs.; Hold 32 lbs. Draw Length Range: 29” – 30”

EXPLANATION: The pivot point is a more realistic measuring point (when compared to the variations of profile of the back of bows at the handle section) for establishing bow weight since the pivot point is a constant in all bows as well as the contact point of the bow hand from which the true draw length is generated.

The 26 1/4” DLPP is the approximate equivalent of the 28” draw used previously on the more massive wooden handle bows.

Therefore, your draw weight is a combination of your draw length (See Arrow Series – Part 2 Measurements) and the combination of your riser (23” or 25”) and your limb stiffness (15#-50#).

For example, a 25” riser with a 34# long limb produces a 70” bow with a draw weight of 34 pounds at a 28” draw length.  If these same limbs were used on a 23” riser, the combination would produce a 68” bow with a draw weight of 36 pounds at a 28” draw length.

However, not everyone has 28” draw length, especially young archers whose draw length will change progressively with growth. So as a rule of thumb you can add or subtract approximately two pounds for each inch your draw length is over or under the 28” standard.

Using the previous example, if an archer has a 26” draw length and uses a 25” riser with 34# long limbs it will produce 30# of force at full draw OR uses the 23” riser with 34# long limbs it will produce 32#.

This is very important to select limbs that enable you to develop and compete however do not cause long-term physical damage. When purchasing limbs you need to determine if the limbs are too heavy, you can try this simple 7-second challenge.

7-second challenge

  1. Draw the bow to the anchor
  2. Hold seven seconds
  3. Let down without lowering your hands, stay in set-up position to take a 2 sec brake,
  4. Repeat several times.

If you cannot do it properly then the limbs are too heavy for you. If you find this challenge extremely easy, you can look at heavier poundage limbs, if you choose.

Now you understand draw weight and used in combination with your draw length you can see the arrows that match your equipment using a manufacturers arrow selection chart. In the up coming blogs we will try to examine the arrow spine, flex and stiffness.

Arrows Series – Part 2: Measurements

As we start to dive deeper about arrows, my goal is to simplify the information so young archers can have a good basic understanding; it is not meant to be all in compassing or a physics lesson, remember I am still learning too. Therefore, the next step is to understand how arrows are measured and how to determine draw length.

The Archery Trade Association (ATA) formerly the Archery Manufacturers and Merchants Organization (AMO) has the following standard for measuring draw length:

AMO DRAW LENGTH STANDARD

For Manufacturers

Draw length is a specified distance, or the distance at the archer’s full draw, from the nocking point on the string to the pivot point of the bow grip (or the theoretical vertical projection of a tangency line to the pivot point parallel to the string) plus 1 3/4”. Draw length from pivot point shall be designed at DLPP (Draw Length Pivot Point) and shall be called TRUE DRAW LENGTH.

EXAMPLE: 26 1/4” DLPP plus 1 3/4” is the equivalent of 28” draw.

For Dealers and General Use

For practical reasons not requiring precise terms, draw length is the distance, at the archer’s full draw, from the nocking point on the string to the back of the bow at the arrow rest.

EXPLANATION: The standard Manufacturers is consistent with the Bow Weight Standard as related to the pivot point. The DLPP plus 1 3/4” is compatible to previous concepts of draw length. Draw length for Dealers and General Use relieves the burden of preciseness not required for general use and facilitates determining arrow length. THIS STANDARD SUPERSEDES THE PREVIOUS STANDARD.

This can be technical and confusing, however with most recurve risers, the distance of the draw length pivot point (DLPP) to the front edge of the riser is 1 ¾”. Therefore, in general terms…

Your approximate draw length is equal to the distance from your string to the front edge of the riser at full draw.

You could use a measuring tape to measure this distance however unless you have a very consistent anchor point and good form you will have varying results, since you should measure several times. Therefore, any archer who is at the point they are fining tuning arrows for high-level of performance they should consult a professional. Otherwise, I would suggest you use the following simple method to determine your draw length.

Arms Length method

Using a ruler (or other straight stick), place one end in the “V” of your neck (where your neck meets your chest ) and relaxed, reach straight out until your palms touch the ruler. At the point for your fingers is your approximate draw length. Your arrows should always be at least 1” to 2” longer than your draw length for safety reasons and young archers often need to set their arrow length little longer ( 2” to 3” ) to allow for growth.

This gives you a basic understanding of draw length and how arrows are measured, however, things get very complicated for young competitive archers who are still developing and growing in size once you add-in arrow stiffness and flex, arrow cost, type of equipment and bow weight.

It is important to understand how things are measured so you can understand why you are using the arrows you have.  I highly recommend you visit your local archery professional for assistance.