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Gromov do you have any pics of the bottom of the hull? Also I made a cooling coil a long time ago where I think I wraped the aluminum tubing around a "d" battery for a 540 brushed motor. From what I remember it's slightly smaller in diameter so it fits snug. I want to do this for my 28mm motor. Do you guys think I should find something a little smaller than 28mm and wrap it around that?
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Ideally - need to buy a cooling for this motor here, or here.
If you do own - we have to take the mandrel by 1-2 mm less than 28 mm. Since the diameter of the tube is wound is not great, you will run into difficulties at the start of the winding. First round - the most difficult. aluminum tube can bend.
To prevent this from happening - I inserted the tube at 100 - 150 mm in depth, plastic cord diameter slightly smaller than the hole in the tube. started to make 0.5 turns - then pulled the cord and then everything went smoothly ....ecomaster.torgg.comComment
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Correct URL for SuxFly is: http://suxflyhobby.com/en/index.shtml
Those are good motors! I have two of em. They are really Suxfly motors but the pic does not show that and HK put their logo in it. They are made by www.suxfly.com. That motor is rated at 14.8v 2~4s. 2s may be ok, but 3s should be a sweeter spot to run at for that hull size, and to get the most out of that motor but prop down as a start. 29000 RPM should not be too bad with 3s on that hull size but I think you can go more in KV. Here is video with similar hull in length with 4100kv motor on 4s.
With 3s maybe start with a 27mm and then try a 30 mm prop. and work your way up. You will likely need to use a 40A but that may be cutting it close, a higher amp like 50-60A or higher would be much better. Use whatever batter you have that is a highest C rating but is not too heavy, maybe start with a 2200mah to keep it fast and light, but if runtime is short go to higher mAH.
Some video's and other setups: (Hull: ETTI Tsunami)
Motor: ETTI 4100Kv, ESC: ETTI 90A, Lipo: 2s 5000mAH Flightpower, 30 mm prop. > http://www.youtube.com/watch?v=DmBQ2FweGwk
Motor: ETTI B29 4650kv, ESC: ETTI 90A, Lipo : 2S1P 5400mAh, 31 mm prop. > http://www.youtube.com/watch?v=K9REmORI_90&feature=related
Please keep us posted with your build. I have not found anyone who has one of these hulls and has posted what they have done with em. You may be the first, so it will be nice to see how it turns out!Mini Cat Racing USA
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Anyone have thoughts on a decent servo for this hull? Like a hitec or something.Last edited by cpgise; 11-13-2012, 07:59 PM.Comment
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I installed the rudder, just waiting for the servo and linkage. It looks like the majority of the builds use ball cups and tie rods, for lateral movement? I was thinking of using metal rod but was concerned about strain on the rudder housing. I did find another build, look in the files tab on hobbyking, under this hull.Comment
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Received my servo and a assortment of tie rods from hobbyking. Now I need to figure out a servo mount. I did get my jet boat running though. It was great until my servo mount broke. Here's the vid link http://m.youtube.com/index?&desktop_...?v=7Luo5nVtET0Comment
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Spoke to Darin Jordan, he gave me a format a while back to re-write Eco and put it up for proposal.
Gromov, you should be Particularly interested in this as we would appreciate your input. You guys seem to be taking an interest, so lets facilitate..Comment
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Here's the servo mount done. Next water pick up and that's pretty much it!photo_edited-1.jpgLast edited by cpgise; 12-09-2012, 09:08 PM.Comment
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Finally had time to finish it. Will test it this weekend with video.Comment
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Can't wait to see her run!
ChiefComment
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This not ECO, but wery funny!
ecomaster.torgg.comComment
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Wow! That takes some skill! Nobody does anything like that in the U.S.A.Mini Cat Racing USA
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