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๐ฌ Re: More detailing up to the current state of the build
1 year ago by ๐บ๐ธ DWBrinkman ( Lieutenant Commander)
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That is awesome! It is going to be a beautiful boat when finished. What are the dimensions and/or scale of it?
Dave B ▲
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๐ฌ Re: Tow Boat Kort nozzles
1 year ago by ๐บ๐ธ StanC ( Petty Officer 1st Class)
โง 99 Views ยท 1 Like
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Unfortunately my 3d printer is packed away. I am also still learning to use it. I haven't really designed anything other than simple shapes but have bought a few and downloaded a few free designs. I actually bought it about 3 years ago in hopes of learning it just for modeling. Maybe one day I'll get there.
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RNinMunich
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๐ฌ Re: Tow Boat Kort nozzles
1 year ago by ๐บ๐ธ LewZ ( Captain)
โง 109 Views ยท 1 Like
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Stan, Glad to hear you are home safely!
I took a little different approach to mounting my Kort nozzle to our rescue boat. The boat originally did not have a Kort and I thought it could use more thrust for heavy pushing. My first Kort (3D printed) for this boat did not fit that well after I made a new 5-blade prop (also 3D printed). It had too much of a gap between the nozzle's inside to the tip of the propeller blades. So after a few measurements and I printed a new Kort nozzle (in the photos) and mounted it. This ABS nozzle has a flange on the bottom with four mounting holes. It is quite sturdy and work very well. This is one more advantage for having a 3D system, design software and printer, for making models. The design of the Kort nozzle for efficiency greatly affects the performance, at least on real boats as opposed to models. These nozzles are not just a thin ring shape extrusion, but they have a specific cross-section profile to reduce drag. This is quite similar to an aircraft wing section. Lew ▲
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Colin H
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๐ฌ Re: Float testing
1 year ago by ๐บ๐ธ StanC ( Petty Officer 1st Class)
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Yes sir the nephew wanted to see it float so we added a few rocks while at the pond no leaks found at this point so moving forward
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๐ฌ Re: Float testing
1 year ago by ๐จ๐ฆ RodC ( Lieutenant)
โง 86 Views ยท 1 Like
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This is when using SLA batteries comes to the fore. You need ballast to achieve a good waterline?? Put in 1 or 2 gel-cells. A strip of Velcro allows for easy fore-aft, side-to-side positioning. LiPOs are a blessing in model aircraft, having hi energy density, but in a boat they dont help you at all as ballast๐ค๐ค๐ค
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Len1
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