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.
http://www.youtube.com/watch?v=cH6i7qrpTSY
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!
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