I made them on my 3D printer from PLA material. The bumper on the tops is so if the tops come loose, they won't come off. They would hit the bottom of the hatch cover. I have a QT of bar and chain lube coming for lubrication.
I find it strange that the DTRC has the oil lub tubes close to the end of the output shaft. I would think it would be close to the motor and the shaft pulls it down. Unless I'm wrong.
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