4. CONCLUSIONS
From the functional test of Cassava Digging and Preparing Unit and Conveyor Unit that were
designed and developed in this research, it has been found to have the ability to solve the
problem in collecting and conveying cassavas. Digging and Preparing Unit should have
digging angle at 20 degrees with both opaque side walls and attach sifter at the back of the digger. This can help break soil clods after the excavation and put the cassavas on the
ground. This is a significant condition that helps the bucket to collect cassavas. Cassava
Conveyor Unit is designed in sparse bucket form. The best speed to continuously collect
cassava from the ground should not be more than 1.5 m/s. so that it will not cause bouncing
and can create enough momentum to throw cassava from the bucket into the collecting
trailer. From the compatibility test of both prototypes, the average working capacity is 0.05
ha/hr. The working efficiency in functioning and the losses caused from conveying are 59.10
and 3.23 percent, respectively. Losses from excavation were not found.
Results from the study and the development of both prototype devices will help to develop a
prototype of the Cassava Harvester Machine.