Power Cube Review
Power Cube 15.6
This review is from the experiences in building Power Cubes in the July workshop held at OSE Factor e Farm in Missouri. Six of the Power Cubes were provisioned for the workshop.
While the workshop went well and functional Power Cubes were built, some unexpected issues arose during the build that are addressed in this review.
Each of the issues are discussed below, along with resolutions and updates to enhance the 15.6 builds.
Control Bracket
The bracket supporting the throttle and keyswitch had already been re-designed to address some prior issues. The steel had already been cut for the workshop, so we improvised to make it work.
[Image:ControlBracketWorkshop.png]
The issues were mostly about simplifying the design and also to resolve a collision in the keyswitch wiring and the frame. The prior design used a length of 1/8" x 1" x 1" angle iron and a small piece of 1/8" steel, both welded to the control bracket. The updated bracket didn't need these and used an updated CNC cut bracket as shown below.
[Image:ControlBracketOriginal.png] [Image:ControlBracketUpdated.png]
Another issue arose when the keyswitch did not fit in the hole provided. This was thought to be due to the tapered hole resulting from the CNC torch. It was resolved with some grinding with a Dremel.
A third issue arose with the throttle control not fitting in the slot provided. The cable required that the slot be elongated - and this has been addressed in the updated bracket above.
Pressure Plumbing
The holes in the Pressure Plumbing bracket did not match those in the pressure relief valve. The holes in the Sketchup pressure relief valve was 1/4" wider than the real item, as described in the Prince Documentation:
The holes have been moved in the Sketchup model to match the valve.