to travel considerable distances before calibration of the fruit
diameter and the descent from sizing belt posed a major
disadvantage of the machine. This resulted in a long machine,
which made transportation difficult. Furthermore, its aperture
was inconsistent because of the non-uniformity of the sizing
belt.
For the frustum-shaped fruit, such as pears and carrots,
Peleg (1985) suggested using the diverging belt sizer for efficient
sorting. A proper sizing machine ought to feature fast sizing
rates, acceptable error ratios with insignificant mechanical
damage. Mohsenin (1996) stated that mechanical damage was
the by-product of the use of agricultural machinery. Possibly,
the aforementioned machines caused mechanical damage but
the related evaluations were not reported. Bupata, Jarimopas,
& Changtong (2007) reported that the diameter of java apple
fruit varies proportionally with the fruit weight. The variation
of the java apple fruit diameter respective to size and cultivar
was presented by Sarakan, Jarimopas, and Changtong (2007).
Based on the compression rupture force of java apple skin, its