dfs473

TSATS: Speedboat

23 posts in this topic

Hey guys :laugh:

Here is my entry for the Eurobricks Contest "To sail the Technic Sea". My MOC is RC controlled,has two M Motors and can swim. :sweet:

I have taken the two bodies from the Lego City 7244 speedboat and build a connection between them.

I think I will modifie it a bit, but here are the first pictures:

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EDIT:

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Speedboat von dfs473 auf Flickr

And here is a short video to see it in action :classic:

Hope you like it^^

Please comment

Regards dfs473

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Good work! Maybe using an RC motor it would be faster?

Yes, and if this is not an option, two M's or a geared up XL should do the job nicely.

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Cool floating creation. I like its design - it looks like "water tank". After watching video I think it is too slow and not very agile. Maybe it wants bigger propeller or one more...

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Thank you all for the positive comments :laugh:

A bit slow, but the design looks cool.

It weighs more then 1kg so it nedds strong motors, but the Lego Motors are not able to pull the boat on a high speed. For this you need a model-making Motor or a better propellor but this contravened the contest rules... :sceptic:

I think it is very fast in view of its weight.

Regards dfs473

Edited by dfs473

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I like your boat. Why not try adding i cylindric housing for the propeller:

Technic Cylinder 4 x 4 x 1 2/3 with Axle Holes - BL Part 2745

It might increase the efficiency of the propeller.

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The air tanks look great. DO they add to the buoyancy?

tim

Yes :wink:

Edited by dfs473

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A good mariner is always prepared for the "unexpected". The air pump can also be used as a "bilge pump" to empty the boat during rough weather! :classic:

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Many people think, that simply pumping air into the air tanks produce more buoyancy. That is not true. In fact, pumping more air in them makes it (insignificantly) heavier.

The only situations when it matters that you pump air in or out, is when tank can increase its size (balloon), or when a fixed size tank is filled with water and you pump it in and out (ballast). It would be nice to see a working ballast in form Lego pieces...

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I have removed the pump and maked some final photos :laugh: , to see the technic inside.

7032440213_e1b189abbb.jpg 7032438745_7a43b7fe7b.jpg

More Photos on Flickr.

Edited by dfs473

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