MHZ Shovel nose Hydro

[Rays89]

I'm wondering if anybody ever built one of these. And how did they set it up. This is my first boat project I have experience in EP Planes and nitro cars. So I decided to make a small hydro as my first project. Looking at the hull it is very light well made but appears very fragile. It appears the stuffing tube and flex shaft seems alittle long Would I be able to cut this down. I figure a dremel can cut the tube but the flex shaft I'm not sure about. As for power presently I have two options An EP2030 3400KV and a Eflight Hacker E series 4900kv. While the hull looks small these motors appear even smaller, Any suggestions? Since this is being my first boat I already noticed I need to get a motor coupler. Would I need to order from MHZ for this part or are there any other vendors? For Batteries I plan on using Li-Polys (at least there is something I have experience with) Not sure if it going to be 2 cell or 3. So if anybody has some eperience with this boat I could use a hand to point me in the right direction.
Thanx

[Rex R]

dremels work fine on flex shafts. I like to arrange it so that when I'm cutting one; that the cutoff wheel is trying to wind the cable up and not un raval it. I also cut mine about an 1/8th of an inch longer than nessesary to keep the cable from binding on the strut when under load(the cables typically get shorter when the motor spins the prop) hth
rex

[BoatDoc]

for a coupler, check the size of your motor shaft and driveshaft, then take a trip over to www.offshoreelectrics.com and see if they have one. if not, see if you can e-mail n.h.schmitt (sorry if i spelled your name wrong, man). he's purdy good at making couplers.

[Rays89]

Well I ordered a engine couple for a 2.3mm motor shaft. I inquired what type of brushless to use and the reply was "Brushless motors recommended are 400 to 480 sized can with a Kv around 4000 RPM/V for 2S lipos or 7 to 8 cells. A good example is a Lehner 1515/15 for 7 cells or a Lehner 1515/14 for 2S lipos" While research the Lehner motors It pretty much said they are 300 watt motors. Looking at the prices of the motors I had almost fell off my chair. Does anybody know of a much cheaper alternative? Like was stated "4000 KV on 2s Lipos" Could I use something with a lower KV on a 3s lipo? ON paper 4000kv X 7.2 =28800 rpm Which I am assuming is the optimum prop speed. So would a motor running on 11.1v (3s lipo) at 2595kv produce the same results? (my numbers might be wrong my calulator is dying) But does this work in real world? or just paper? As for the question of Wattage yikes my brain is going to explode. A really quick block of instruction on that would be appreciated. I guess really what I would apreciate If someone can recomend a brushless motor that is reasonably priced that can make this little Hydro perform
Thanx
.