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Author Topic: 30 inch brushless hydroplane project  (Read 10991 times)

loveboat

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30 inch brushless hydroplane project
« on: August 14, 2012, 09:16:34 AM »

hi all ,

im doing my first boat project ive only been at it 2 weeks but i think im starting to get somewhere now

it was originally a nqd storm 30 inch , ive ripped iut all the rubbish electrics and fitted

alloy motor mount

lipo battery mounts

traxxas 1/10th water proof servo

95mm rudder

twin water cooling (1 for motor 1 for the esc)

100 amp water cooled esc

i am also waiting for a few parts to be delivered

330 mm 4 mm flexi shaft and mount

bronze prop

3674 2000kv water cooled brushless motor

i know ive prob got one or 2 things wrong but with this being my first project i suppose its going to happen so please go easy on me lol

ive taken a few pics the paints not finished yet might finsh that off today if i get time

please feel free to comment

i will post more pics as i progress





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essex2visuvesi

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Re: 30 inch brushless hydroplane project
« Reply #1 on: August 14, 2012, 09:33:25 AM »

Looking good... Im guessing you are planning on 11.1V 3S lipo? should go like stink with a 4S lipo

Be careful with prop sizes tho as they can really affect the current draw (don't ask how I know)
I nearly bought one of those when I was last in the UK.... the local "cheap chinese import" had them for about 30quid.... looked like they had been on the shelf since last Christmas tho lol
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #2 on: August 14, 2012, 09:41:59 AM »

lol there not the best i bought it with the intenion of doing this too it i just hope it works lol

i was going to run it on 3s yeah and the prop ive ordered its a bronze 35mm with 49 pitch means nothing to me but if that dont fit i have 2 other brushless boats it should do good on
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #3 on: August 14, 2012, 10:40:07 AM »

few more pics ,

got the rudder steering finished off and yes that is a bbq scewer lol

ive still got to plug up some small holes but that can wait till ive fitted the prop shaft



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essex2visuvesi

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Re: 30 inch brushless hydroplane project
« Reply #4 on: August 14, 2012, 11:21:47 AM »

got the rudder steering finished off and yes that is a bbq scewer lol


If the cap fits... (or BBQ skewer in this case) :)
That looks like it will be a very nice paint job when its finished

I would have chosen a different motor mount tho as my experience of that type is that they do have a tendancy to twist as the alloy is quite soft.
This might be a better bet, as it give you extra cooling for the motor
http://www.ebay.co.uk/itm/MOTOR-MOUNT-WATERCOOLED-BRUSHLESS-B36-540-550-rc-boat-model-adjustable-B28-700-/150762384438?pt=UK_ToysGames_RadioControlled_JN&hash=item231a236c36
I can reccomend the seller highly... A nice chap and quite knowledgeable.
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #5 on: August 14, 2012, 12:33:41 PM »

cheers pal ill look into that , how do you mount it to the hull ?

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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #6 on: August 14, 2012, 12:43:04 PM »

paints finished bit of a shocker but it will do better than custard yellow anyways lol

just need some more decals to finish it off





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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #7 on: August 16, 2012, 11:47:05 AM »

few more pics , all i have to do now is fit the esc , seal the hull and screw it together and its ready for its first test





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Mad_Mike

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Re: 30 inch brushless hydroplane project
« Reply #8 on: August 16, 2012, 11:49:57 PM »

Not from own personal experience but from what i gather by other peoples experience of these hulls that they are quite brittle. The motor in the boat is quite beefy and the torque will apply torsional stresses to the length of the hull when the prop is underload in the water. I think that these screw holes will weaken the hull and form cracks along the length. It seems evident that drilling and just fitting screws in the hull has formed cracks in the paint work allready.

It may be just the way the light has caught the hull and i might be wrong. I hope i am wrong because id hate to see your hard work go TU {:-{
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #9 on: August 17, 2012, 10:32:47 AM »

there just scatches mate were its been moved about its not got a stand for it you see so this will happen ,

i do have the same worries as you though i thought of getting a sheet off ali and putting it on bottom of boat to make it stronger
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Martin [Admin]

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Re: 30 inch brushless hydroplane project
« Reply #10 on: August 17, 2012, 10:33:38 AM »


... can't wait to see a video of this thing on the water.... or very blurry photos!  :o
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #11 on: August 17, 2012, 11:14:58 AM »

i cant wait get it out mate and see what it can do , ill defo post a video of it though .....
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gwa84the2nd

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Re: 30 inch brushless hydroplane project
« Reply #12 on: August 17, 2012, 12:31:46 PM »

just a note wher you have atached the ruder and strut to the transorm you will need to reinforce this usualy with racing boats we atach a ply reinforcment plate to the back then bolt  the hardwher  throw this and samwich the hull between the ply and gear  :-))
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Martin [Admin]

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Re: 30 inch brushless hydroplane project
« Reply #13 on: August 17, 2012, 01:47:53 PM »

 
Yes, good advice!   :-))
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #14 on: August 17, 2012, 02:54:06 PM »

just a note wher you have atached the ruder and strut to the transorm you will need to reinforce this usualy with racing boats we atach a ply reinforcment plate to the back then bolt  the hardwher  throw this and samwich the hull between the ply and gear  :-))

shame i didnt read this an hour ago ive just siliconed it all and put it together lol , will have to see how it holds up as it is for now , im hoping to find the same hull but in fibre glass so i can just swap everything over .

thanks for the advice though mate
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #15 on: August 17, 2012, 03:44:54 PM »

well apart from the video ill upload when i test the boat these will be the last pics i upload of the build

i must be honest im pretty sad that its 99% complete as ive really enjoyed doing this i can see why boating it so addictive

well here it is just the esc to finish it off

its all been sealed and screwed together and the water cooling installed and ready to go





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black magic racing

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Re: 30 inch brushless hydroplane project
« Reply #16 on: August 17, 2012, 04:06:52 PM »

Hi.just a small point here .i have noticed that you dont have a turn fin under your boat,i run a modded petrol hydro and have one on mine which really does help the boat turn at speed,maybe worth you looking into one ,very nice build and hope it all goes well :-)) :-)) :-))
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #17 on: August 17, 2012, 04:46:42 PM »

Hi.just a small point here .i have noticed that you dont have a turn fin under your boat,i run a modded petrol hydro and have one on mine which really does help the boat turn at speed,maybe worth you looking into one ,very nice build and hope it all goes well :-)) :-)) :-))

what do you mean mate sorry im pretty new to boats , if you say its better ill get one for it ???  could you post a pic of yours on here so i can have a look  :-))
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Martin [Admin]

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Re: 30 inch brushless hydroplane project
« Reply #18 on: August 17, 2012, 04:48:38 PM »

 
Don't forget lots of reserve buoyancy, small bubble  wrap is excellent!
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #19 on: August 17, 2012, 04:54:57 PM »


Don't forget lots of reserve buoyancy, small bubble  wrap is excellent!


got loads mate all the front is full of poli and the rear , ive also filled the top cover full of it and will stuff some of the inside full of bubble rap but wont get much in as theres not much room
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armc40

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Re: 30 inch brushless hydroplane project
« Reply #20 on: August 17, 2012, 05:01:26 PM »

got loads mate all the front is full of poli and the rear , ive also filled the top cover full of it and will stuff some of the inside full of bubble rap but wont get much in as theres not much room

and don't forget ......http://www.ebay.co.uk/itm/Bicycle-Clips-for-Trousers-Brand-New-in-Pack-/120967548081?pt=UK_SportGoods_CyclAcces_RL&hash=item1c2a3a4cb1#ht_500wt_1414
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black magic racing

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Re: 30 inch brushless hydroplane project
« Reply #21 on: August 17, 2012, 05:06:22 PM »

Hi.Here are some pictures of my hydro mate,hope this helps,as you can see it runs a turn fin underneath the front sponson on the right,with rudder on the left to help it turn at speed, :} :} :}









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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #22 on: August 17, 2012, 05:14:50 PM »

right i get ya , cheers buddy
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Re: 30 inch brushless hydroplane project
« Reply #24 on: August 17, 2012, 05:53:37 PM »

To keep the brown trousers tight at the ankles {:-{

Ned
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