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That's what I would tend to think...it it's sitting high, then add weight down at/near the keel should go along way to fix it.
-Jeff
-Jeff
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Rohr 1.....Los! -
I can trim the boat to the design waterline. But then the piston tank does not create enough downforce to submerge the boat. That's because the volume of the boat above the waterline is larger than the 750ml of the piston tank. So the only way to get the boat down is to add weight or to remove volume above the waterline. Second cannot be done for various reasons. So I had to add weight to make the boat submergible, but that sinks the boat deeper, below the design waterline.Comment
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Trimming .... the simple short course.
Surface trim is done with the ballast tank completely empty of water.
Weight is added or removed to get the boat to sit just a little above (up to 1/4") of the designed waterline.
This gives the full use of the ballast tank to submerge your boat.
When the ballast tank is completely filled with water and the boat does not submerge completely or at least with 1/2" of less of the sail exposed above the surface, my opinion is the ballast tank may be too small.
If the boat submerges complete then you have room to adjust the limit for the filled ballast tank.
Once you have surface and submerged trim, you may need to move the location of the weights to get level trim submerged.
Moving the weights will usually not effect surface trim.Comment
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I know that. Not my first boatComment
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Alrighty, then.....Ralph is just trying to lend a hand.Last edited by thor; 11-22-2015, 05:45 PM.Regards,
MattComment
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I offered up information.
I do know this is not your first boat.
I was taken aback that your solution to the boat's problem is to build another boat with a different system.
Not that building another boat is in any way a problem.Comment
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Wasn't meant personally. I appreciate your intentions to help me. Just wanted to point out, that I've understood the problem and that there is no easy way around too much volume above the waterline, when you do not have space for a bigger tank.
The boat, as it is now, swims upright, dives nicely, I just mised the design waterline by 1 - 1,5 cm. Not that bad for a first try.Comment
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Can we see pictures of it running?If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.Comment
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No pictures yet. It's freezing in Germany. Nat the right weather to run RC subs.....Comment
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Oh, O.K.
I thought when you said it dives nicely, that you actually ran it recently.
Peace,
TomIf you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.Comment
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In the bath tub......it dives nicely in the bath tub ;-)Comment
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This is nice to see. Good looking cad work. Keep it coming please. Yum! You could post a video link to it diving in the tub. I always enjoy a tub sub.Comment
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For trimming I had the front section of the deck off to have access to the bow to attach foam and lead. Now that the boat is trimmed, I put it on and started painting it. Finally the boat comes together:
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This is so nice!Comment
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Do you have any purchase price figures for selling kits of this model masterpiece?Comment
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