A game consists of 10 frames with the bowler having a maximum of two attempts to knock down the 10 pins in each frame. The maximum score for a game of 10 frames is 300. Bowlers compete with each other (singles) or in teams of two (doubles), three (trios), four or five persons. The most common type of lane is wood. Synthetics are becoming more popular and some lanes are a combination of wood and synthetic. The lane is 18.288m from the foul line to the centre of the headpin. The approach is a minimum of 4.5m long. There is a large dot embedded in the middle of the lane at 3.8m with two dots either side, five boards apart, that are used for lining up the feet of the bowler. Some centres have an extra set, making a total of seven dots. The foul line is at the start of the lane and measures 0.95cm–2.54cm wide. There are dots embedded into the approach side of the lane situated at five boards apart and used for lining up and targeting. There are 39 to 42 boards on a lane. The first arrow from the gutter is the 5 board, the second arrow is the 10 board etc. and the middle arrow is the 20 board. The dots are markers on the lane situated 2.13m from the foul line and are used for targeting. They are located from the right from the gutter on the 3, 5, 8, 11 and 14 boards. It is the same from the left side. The pins are located within a 91.44cm equilateral triangle, with each of the pins aligned 30.48cm apart centre to centre. Bowling pins are made from hard maple and when shaped, coated with a white plastic. The weight for all pins is 1.5kg−1.6kg. Each pin is 38.10cm high and 11.40cm wide.
Dimensions for Tenpin Bowling
Tenpin bowling is a sport in which a player (bowler) rolls (bowls) a bowling ball down a narrow, straight, flat, wooden or synthetic ‘lane’ with the object of scoring points by knocking down as many of the ten pins as possible set in a triangular formation at the end of the lane.Bowling lane
Approach
Foul line
The boards
The dots
The pin deck
Pins
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Tuesday, July 27, 2010
Dimensions for Tenpin Bowling
Thursday, July 22, 2010
Changing Your Target Line: Arrows or Feet?
Changing Your Target Line: Arrows or Feet?
What happens when you change your target line by moving your feet a board right or left? Is it the same as moving your arrow target? For simplicity, we'll use a straight ball, taking the lane oil and ball motion (hook) completely out of the picture, and look only at the geometry. We'll also assume you start on the approach about halfway back (7.5 ') from the foul line, you walk parallel to your target line, and we'll use some approximations about lane marking distances.
Now, let's look at those distances. From your stance position, it's 7.5' to the foul line; about another 15' to the arrows - a total of 22.5'. The pins are 60' from the foul line, or 45' from the arrows (twice the stance-to-arrow distance).
What happens when you move your feet (blue line)?
Using a line down the 20-board as base for the ball position, move your feet 2 boards left on the approach, and imagine a new line through the 20-board at the arrows, to the pin deck. That creates two similar triangles on opposite sides of the arrows. Geometry teaches us that similar triangles have all sides in proportion, so if the arrow-to-pin deck length is twice the stance-to-arrow distance, the ball will be twice the foot-move distance, or 4 boards right of the base line at the pin deck (opposite the direction you moved).
What happens when you move your target (green line)?
Keep the starting ball position on the 20 board and move your arrow target 2 boards to the left. The stance-to-arrow triangle is identical to the previous one, though pointing back at you (2 boards wide at the arrows). The stance-to-pin-deck triangle is similar to the smaller one, but now 3 times as large (22.5' + 45'), making the pin deck change also three times as large, or 6 boards, in the same direction as your target move.
In other words, for every 1 board you move your feet, your ball moves 2 boards in the opposite direction; for every 1 board you move your target, your ball moves 3 boards in the same direction.
READ MORE...
What happens when you change your target line by moving your feet a board right or left? Is it the same as moving your arrow target? For simplicity, we'll use a straight ball, taking the lane oil and ball motion (hook) completely out of the picture, and look only at the geometry. We'll also assume you start on the approach about halfway back (7.5 ') from the foul line, you walk parallel to your target line, and we'll use some approximations about lane marking distances.
Now, let's look at those distances. From your stance position, it's 7.5' to the foul line; about another 15' to the arrows - a total of 22.5'. The pins are 60' from the foul line, or 45' from the arrows (twice the stance-to-arrow distance).
What happens when you move your feet (blue line)?
Using a line down the 20-board as base for the ball position, move your feet 2 boards left on the approach, and imagine a new line through the 20-board at the arrows, to the pin deck. That creates two similar triangles on opposite sides of the arrows. Geometry teaches us that similar triangles have all sides in proportion, so if the arrow-to-pin deck length is twice the stance-to-arrow distance, the ball will be twice the foot-move distance, or 4 boards right of the base line at the pin deck (opposite the direction you moved).
What happens when you move your target (green line)?
Keep the starting ball position on the 20 board and move your arrow target 2 boards to the left. The stance-to-arrow triangle is identical to the previous one, though pointing back at you (2 boards wide at the arrows). The stance-to-pin-deck triangle is similar to the smaller one, but now 3 times as large (22.5' + 45'), making the pin deck change also three times as large, or 6 boards, in the same direction as your target move.
In other words, for every 1 board you move your feet, your ball moves 2 boards in the opposite direction; for every 1 board you move your target, your ball moves 3 boards in the same direction.
Setup and Stance
Setup and Stance
1 # Starting on the approach
To find the length of your approach, stand with your heels at the foul line and take the number of steps in your approach back toward the start of the approach area. Then add about another 1/2 step to account for the slide. This is the distance from the foul line at which you should start.2 # Feet Placement
When placing your feet, line up with the foot that you slide with. Place your feet up to 4 inches apart with the right toes even with the left foot arch. (right handed) 3 # Ball Placement
Center the ball square to the inside of the right shoulder, or between the shoulder and chin. Have your forearm resting against your side and support the ball with your non-bowling hand. 4 # Balance
Remember to slightly flex your knees and have a slight tilt forward with the upper body. You should feel more weight on the balls of your feet rather than your heels. READ MORE...
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