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RC Jet boat pump
by maciej_ratka, published
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This Jet Pump was designed as a modification to a old R/C boat I have. with an impeller diameter of 26mm it is quite large for the scale of the boat.
The Intake features Intake strakes to minimize ingestion of pond weeds and was designed around the input shaft in a brass sleeve with a O/D of 5mm.
The nozzle has a turning angle of 50 degrees and uses a 1.5mm ~ 40mm long steel pin as pivot and means of controlling the nozzel
0.2 (0.1 for impeller)
I used the concentric lines infill pattern when printing the parts.
STEP ONE - NOZZLE ASSY
Once All Parts are printed it is best to assemble the nozzle section.
First Insert the "Nozzel" into the "Rear" section aligning the pin hole and inserting a 1.5mm steel pin through it all and apply a little dab of superglue (I use loctite 401) to the inside to the "Nozzel" to secure to the shaft then press on the "arm" to the metal pin protruding from the top of the "rear" and secure that to the top of the shaft with another dab of superglue. (see Video and image below on how it should look).
NOTE 4 (DRAWING)
The pin should be free in the "rear" but a tight almost press fit in the "Nozzel"
STEP 2 - REVERSER
Step 2 is to simply spread the arms of the the "reverser" and click them onto the pins of the "rear".
OPTIONAL STEP - Adapter ring
If you want to play around with impeller options or don't want the rear to be stuck on permanently with superglue or in my case once the intake was fitted the join to the rear was just not good enough. you can use the adapter ring, I have super-glued one end into the rear section and it is a tight fit into the Intake section that I plan to put silicone RTV compound on it to keep the rear section in place. (NOTE 4)
STEP 4 - INTAKE INSTALL
Once the intake is printed run a 5mm drill through the input shaft hole, and remove supports, then I cut a 30 by 50mm hole in the base of the hole (ended up being closer to ~53mm to get the intake to fit) when installed correctly the flange at the bottom by the intake grate should be on the outside of the boat. I secured the intake to the boat with superglue around the flange then sealed everything on the inside of the boat and around the intake on the outside with a sealant (I used a polysulfide based sealant but anything will work)
MORE STEPS COMING SOON!!!!!
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RC Jet boat pump by maciej_ratka is licensed under the Creative Commons - Attribution - Non-Commercial license.
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- You must attribute (give credit) to the creator of this Thing.
- Remixing or Changing this Thing is allowed.
- Commercial use is not allowed.
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