dfs473 Posted March 17, 2012 Posted March 17, 2012 Hey guys 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. 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: EDIT: Speedboat von dfs473 auf Flickr And here is a short video to see it in action Hope you like it^^ Please comment Regards dfs473
dfs473 Posted March 17, 2012 Author Posted March 17, 2012 Very nice speedboat dfs473. well done. Thanks
efferman Posted March 17, 2012 Posted March 17, 2012 nice to see an other floating contestant. good luck
Zerobricks Posted March 18, 2012 Posted March 18, 2012 Good work! Maybe using an RC motor it would be faster?
vmln8r Posted March 18, 2012 Posted March 18, 2012 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.
Tomik Posted March 18, 2012 Posted March 18, 2012 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...
dfs473 Posted March 18, 2012 Author Posted March 18, 2012 (edited) Thank you all for the positive comments 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... I think it is very fast in view of its weight. Regards dfs473 Edited March 18, 2012 by dfs473
TinkerBrick Posted March 18, 2012 Posted March 18, 2012 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.
dfs473 Posted March 28, 2012 Author Posted March 28, 2012 Nice ! looks like a spaceship Here are two more pictures: I have attached two Lego air tanks on the bottom and a air pump in the body Speedboat for EB contest von dfs473 auf Flickr
timslegos Posted March 28, 2012 Posted March 28, 2012 The air tanks look great. DO they add to the buoyancy? tim
dfs473 Posted March 29, 2012 Author Posted March 29, 2012 (edited) The air tanks look great. DO they add to the buoyancy? tim Yes Edited March 29, 2012 by dfs473
DLuders Posted March 29, 2012 Posted March 29, 2012 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!
Lipko Posted March 30, 2012 Posted March 30, 2012 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...
dfs473 Posted March 31, 2012 Author Posted March 31, 2012 (edited) I have removed the pump and maked some final photos , to see the technic inside. More Photos on Flickr. Edited March 31, 2012 by dfs473
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