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NAMJ R&D Update- TROLLING MOTOR JET |
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NAMJ has a new project in the works... an electric jet unit utilizing a 24-VDC trolling motor. The purpose of this jet is to achieve 12 knots, as opposed to the 7 knots that the unit currently produces with a standard prop. I will post some theoretical numbers when they become available.
The entire unit was designed in 3D with Autodesk Inventor.
This picture is a rendering of what the unit may look like....
 Using the models from Inventor, we printed the parts on our Dimension 3D printer. FDM (Fused Deposition Modeling) printing has proven to be an extremely valuable tool for our R&D projects. Here are some pictures of the final parts for this unit.  The impeller  The impeller in the wear ring/stator assembly. We are in the process of making designing the last few components to put this jet together. We hope to have it running by next week. ~RJ Penn, Engineering and R&D
~~~~UPDATE~~~~The first test of the trolling motor jet was conducted on Nov. 4, 2009. We attempted to gain thrust and HP readings, but were unable too, due to a malfunction in the control potentiometer. The impeller is designed to absorb 1.5 HP from the 2HP motor at 1600 RPM, however, we only made 0.54 HP and our RPM is unknown. We are looking into the problem with the controls and hope to have it sorted out by next week.
Below is a picture of the assembled unit. The stator/wear ring is held in place by a bracket that is clamped around the body of the motor.
  Hopefully we will be able to test this unit again next week. ~R.J. Penn, Engineering and R&D |
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