Harbour directory
16" Aerokits Sea Urchin
Specifications
- Boat Length
- 12" (30.48 cm)
Photos
About this boat
Model boats under about 24" were always in my opinion too small for me, because some of their use 'will be' on the river by my parents house.
When I saw the Sea Urchin, I instantly fell for it, thinking what a cute model boat, and because it's very 'scale' too, I had to bid on this one when I saw it.
So, yet another.....project 🙄
When I saw the Sea Urchin, I instantly fell for it, thinking what a cute model boat, and because it's very 'scale' too, I had to bid on this one when I saw it.
So, yet another.....project 🙄
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Comments
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Somewhere around 32", double the length of the original would make a really nice model, not too big to transport, but big enough to use even in a bit of a chop.
Please let us know if you do decide to go ahead with that idea one day.
Will
You could make a rubber curtain screen inside the transom (old cycle tube?) with a slit for the arm to slide in to help keep some of the water out, and consider that extra bulkhead to make a sealed chamber as well ?
Much better than sinking.......
Bob.
But with my Faun I wanted it to be close to scale as possible. The external rudder was fine, my mistake was the positioning of the servo as the rear deck was already in place. I'm not too worried about water penetration as it's only a slow craft and won't be used that much preferring a bit more speed!
Mount a small conventional rudder post inside the hull as close to the transom as possible with the operating arm inline with the keel so a small operating servo can be mounted beside it.
The brass rudder blade could be remade/replaced to extend back behind the transom and replace the external wooden rudder.
A dummy tiller arm can be attached to it (and still hinged outside the transom) so that when the rudder moved, the tiller arm would move with it.
This is the idea I will try as I like it the best.👍
Bob.
The tiller arm would appear to be the obvious way to turn the rudder but connecting it to a servo is a challenge without obvious connection links to it.
Making a dummy sailor with an animated arm holding the tiller arm would probably be best - if you are able to make one.
A push/pull system passing through the transom onto an arm on each side of the rudder would work almost invisibility with a mini waterproof servo mounted inside a small chamber.(an extra bulkhead fitted close to the transom with just enough room for the servo to move freely).
Water leaks would be my concern with this, even with well greased bellows, but the extra sealed chamber just inside the transom (to house the mini- servo) would stop any water leakage penetrating further into the hull - if any should get in.
Not sure why I am so concerned about this, my fast racing hulls all have this system, and I get no leaks .... but the Sea Urchin is so small so the linkages would need to be tiny and maybe harder to seal effectively?
Bob.
The rudder operation is certainly a challenge with models this small and have to admit I rather launched into that on the Faun and it didn't turn out as I really wanted. I should have made the deck at the stern removeable so that I could fit the servo further back, though I don't know if that would have worked or not as the stern is narrow, but you live and learn! I still really like the model though and can't wait to try it on the water.
Philuk👍
The steering linkage to the rudder is the one area that I need to get "right" in my mind before I start building it!
Bob.