baeckmo's Recent Activity
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baeckmo replied to the thread Tunnel drive propeller selection.
A general rule of thumb for radius around a "hole in a wall" outlet is roughly 25 % of the diameter. In the case with the fluid crossing...
Apr 17, 2024 at 2:48 PM -
baeckmo attached a file to the thread Tunnel drive propeller selection.
These tunnels have a shape that is thought to be ok for the flow along the hull, but when you introduce the propeller flow, the picture...
Apr 15, 2024 at 1:40 PM
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baeckmo liked ondarvr's post in the thread How to make a hull in epoxy and fiberglass only from a mold — no vacuum.
I'm thinking this wasn't his first venture on big water, and he understood his boat, the ocean and the weather very well. I don't see...
Apr 14, 2024 at 3:19 PM -
baeckmo replied to the thread Tunnel drive propeller selection.
The shape of the tunnel has a big influence on the prop performance; the devil hides in the details. So before we can say anything, you...
Apr 14, 2024 at 3:07 AM -
baeckmo replied to the thread Steel corrosion and stray currents.
Was the hull connected to shore power, f.e via a charger when you saw it?
Apr 12, 2024 -
baeckmo replied to the thread Propulsion for a 36ft aluminum boat.
Correct per se, but it also means that the rolling will be resonating with longer waves, having more energy input to increase the roll...
Apr 12, 2024 -
baeckmo replied to the thread Jet impeller speed vs water flow.
For a jet with constant nozzle size, the flow is proportional to rpms; the resulting pressure is proportional to rpm^2 and the required...
Apr 12, 2024
