Normally saltwater is an excellent conductor, so I think it can serv as ground connection for your rov.
The best is to use a 3rd wire as ground connection.
To be safe buy a pair of automatic fuses a couple of amps higher than your maximum need of amps.
Helge
Search found 8 matches
- Sep 1st, 2011, 11:14 am
- Forum: Electronics
- Topic: Power via 48v Tether
- Replies: 18
- Views: 15869
- Aug 31st, 2011, 9:39 pm
- Forum: Frames, Hulls, & Bouyancy
- Topic: Round hull mounting problem
- Replies: 7
- Views: 8801
Re: Round hull mounting problem
Emm? perhaps i didnt understand the question?
isn't the cylinder the oil container, and the square thingy a mounting bracket of some sort?
If so, dont make any holds in the cylinder. just clamp it to the bracket with hose clamps.
helge
isn't the cylinder the oil container, and the square thingy a mounting bracket of some sort?
If so, dont make any holds in the cylinder. just clamp it to the bracket with hose clamps.
helge
- Aug 31st, 2011, 7:08 pm
- Forum: Frames, Hulls, & Bouyancy
- Topic: Round hull mounting problem
- Replies: 7
- Views: 8801
Re: Round hull mounting problem
quick fix: make 4holes, one in each corner of the sqare bracket. buy 2 large hose clamps and install them through the holes and around the cylinder
- Aug 31st, 2011, 5:03 am
- Forum: Electronics
- Topic: Power via 48v Tether
- Replies: 18
- Views: 15869
Re: Power via 48v Tether
the loss of voltage is minimal (110 to 106V is 3.5% or something) in theory power is constant between the too voltage levels. 400W / 106V = 4A <--> 400W / 12V = 33A This is only in theory, but 4amps of 110VAC would-be able to feed a hungry 110VAC to 12VDC power supply 50% increase yes and no. Yes if...
- Aug 30th, 2011, 10:28 am
- Forum: Electronics
- Topic: Power via 48v Tether
- Replies: 18
- Views: 15869
Re: Power via 48v Tether
sorry mate's if this is a rookie qestion :? why not use AC 110 or 230? Only bad thing with AC as I see it is the power source topside. It's expensive to buy a inverter 12/24V DC to AC. But a cheep gasoline powered generator would to the trick. And a AC to DC power supply for the rov is easy, cheap a...
- Aug 28th, 2011, 3:50 pm
- Forum: Electronics
- Topic: NiMH Battery Options for Onboard Power
- Replies: 2
- Views: 3839
Re: NiMH Battery Options for Onboard Power
you can fill the tube with hydrolic fluid, hydraway 22 or something, if u succeed in removing ALL the air it will work. if it holds a constant teprature. my tip is to connect a varible reservoir. the simplest way is to connect a bit of a flexible garden hose, half filled, and blanked. If the fluid v...
- Aug 28th, 2011, 2:46 pm
- Forum: Thrusters
- Topic: Using magnetic drive pumps
- Replies: 2
- Views: 3948
Re: Using magnetic drive pumps
i know that heavy-duty mixers and boylers used in foodproduction use this type of technoigy, due to the easy cleaning of the equipment. I think this is the best way of making a smal deepwater thruster if you have the equipment to fabricate plastic og aluminum. it maks pressurising the thruster housi...
- Aug 28th, 2011, 9:59 am
- Forum: Introductions
- Topic: Hi from Norway
- Replies: 1
- Views: 2183
Hi from Norway
Hi all Im yet another rov homebuilder. Havent got any seaworthy rov yet. 2 years ago I started working in an ROV company and fell into the occupational hazard of trying to build one at home :D My plan/dream is to build a small ROV capable of depths greater than 100m. Im thinking of a PC to Arduino c...