OBSERVATIONS CN EFFECT OF USING WINTARK TYPE BALL
AND LAST BILT TYPE BALL INTERCHANGEABLY

 

GENERAL INSTRUCTIONS: (1) Secure one of each type ball. Each is available in var-
ious qualities but for this work, it is recommended that balls that sell at approx-
imately 411.00 be used. In the case of the Wintark type ball, if possible secure
one produced by Rawlings and one produced by Dubow because the cover designs differ
and each has its advantages. For this work, use a pressure in the ball which wiil
make it bounce within the range prescribed by rule -- minimum of 48 inches and max-
imum of 55 inches when dropped from a height of six feet. You will probably find
that the pressure for the Last Bilt ball must be 7 pounds or below ana for the
Wintark approximately 10 pounds. Disregard the stamped pressure on somo of the
bells which may have becn stamped at a time when experiments to determine best ree
action were being made.

 

2. Arrenge to usc one type ball in half of « practico, intramural or regularly
scheduled game and the other type in the other half (quarters may bo chosen if de-
sired). Carefully avoid any coments which might mako the players biased. If poss-

ible, keep players in ignorance of the fact that therc has been any change,

3. After the first tost, check the experiment by reversing the order in which the
balls arc used and also wary the procedure onough so that any playcrs who mry heave
hid knowledge of the change will be caught unawares the noxt time. You might
choose to interchange the balls sometime when thero is an out of bounds or a time-
out.

DATA ON TWO TYPES OF APPROVED BALL.

 

Gencral Statement of How Expcriment was Conducted:

 

 

 

Length of time cach ball was in use:

 

If changed at the half, which was uscd first half:

First half second half
or game ot game

Number of PUD LE Gs 6.40 d6 Keo 46005646086 +0% He eRe

 

 

Percent Ficld goals madGecsecccsesesecscseves

 

 

Percent Free throws WG 6.6 64 6 6 0 00 055 b4 bee nese

 

 

Nos times posscssion changederecessvesevecece

 

 

Your opinion based entirely on observation:

Did players automatically adjust themselves to the change?

 

Was play less accurate because of the chango?

In a tournament, would players be bothered if the two types of ball were to bo
used in alternate games?

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