Nexus Tide 2.5 times bigger, was Want to use up some 24 volt stuff in a Boat - RC Groups
Thread Tools
Nov 02, 2008, 04:08 AM
NeverAgainVolunteerYourse lf
nick_75au's Avatar
Build Log

Nexus Tide 2.5 times bigger, was Want to use up some 24 volt stuff in a Boat


Ok fishing for ideas, I have a multitude of 24 volt motors and a 24 volt water pump, I want to put it in a boat, It has to be a simple design, semi scale (Im not a "detail" person ) I have a 24 volt 30 amp Electronize speed control. I really want to use the water pump, its high pressure 30 +psi, squirts across my yard.
I thought along the lines of a 3x Springer but isn't quite what I'm after shape wise.
Regards
Nick
Last edited by nick_75au; Nov 13, 2008 at 02:58 AM. Reason: Changing title of thread
Sign up now
to remove ads between posts
Nov 02, 2008, 09:39 AM
no wings any more, just dust!
Ghost 2501's Avatar
sounds like a good plan, though a square-cut bottom springer sounds a good idea
Nov 02, 2008, 11:03 AM
Grumpa Tom
Kmot's Avatar
Just curious, but why so much 24V stuff? What was it used in?
Nov 02, 2008, 11:24 PM
NeverAgainVolunteerYourse lf
nick_75au's Avatar
Hi ,
If it is Springer definitely the cut-off version
All motors and pumps out of full sized boats, 24 volts is more efficient than 12 volts.
Im thinking Offshore supply/ research vessel, springerised
Nick
Nov 03, 2008, 09:30 AM
Registered User
The biggest problem would be reducing the supply voltage to something those servos and receiver could use. Certainly not impossible by any means, but also not exactly efficient in several ways. First thought it two power supplies/batteries. One for the motor (any usable voltage), and one for the control stuff (6 volts?). No idea what that would do to the required size/weight capacity of the boat.
- 'Doc
Nov 03, 2008, 09:38 AM
Mmm, tugs...
patmat2350's Avatar
No biggie on the power supply... many single-component regulators are available that can drop 24v to 5v, with capacities of 0.5A and on up. Might want a heat sink though!
Nov 03, 2008, 11:03 AM
Registered User
Quote:
Originally Posted by patmat2350
No biggie on the power supply... many single-component regulators are available that can drop 24v to 5v, with capacities of 0.5A and on up. Might want a heat sink though!
There must be a way of using the heat generated for something useful.
Nov 03, 2008, 11:14 AM
Mmm, tugs...
patmat2350's Avatar
A real (miniature) coffee pot on the bridge?
Nov 03, 2008, 11:30 AM
Registered User
steamboatmodel's Avatar
A mini Stirling engine powered fan.
Nov 03, 2008, 01:33 PM
3 Blades to the Wind
Shaun Hendricks's Avatar
If you're using 2-4 batteries to drive the 24v, just pull the lower voltage off an earlier battery. Radios and such don't pull enough juice to worry about the drain.

4 x 6v Lead Acid cells would let you run 6,12,18 and 24v items right off the battery taps. You just have to be certain the circuits don't share common components or power bus runs.

Springer or large tug/warship would be easy to do. A super-fireboat might be fun!
Nov 03, 2008, 05:51 PM
NeverAgainVolunteerYourse lf
nick_75au's Avatar
Hi Guys,

Interesting, the coffee pot would be great but there's no way it would keep up with my consumption
On the power for servos etc Im just going to use a separate battery,

Any Ideas for a relatively simple tug warship or fireboat hull? other than Springer? Its going to have to be fairly large, the motors are about 6 inches long and 3 inches diameter, plus a couple of big gel cells.

I've also got a couple of marine electronics items to put in, like a depth module that can output serial data. When I find out how to transmit that wireless, I will use a laptop to record it.
Nick
Nov 04, 2008, 10:44 AM
Registered User

Use a plan from a full-size boat?


There are lots of free plans on the net for row boats in various shapes and sizes. If you take one of those plans and divide all the measurements by 4, you'll have a nice hull that has been proven to be stable. That should give you a good place to start.
Nov 04, 2008, 11:50 PM
RELAX. You'll live longer
785boats's Avatar
Hi Nick.
I've got a few plans & articles in old MMI & Model Boats magazines you can borrow if you're coming up on Saturday for our Open Day & swap/sale meet.
'Nexus Tide' comes to mind. It's an oil rig support vessel. There are also tugs & customs launches, workboats etc. If you double or triple the size of the plans, add a few extra bulkheads, & work your magic with some extra detail I think you'll be well pleased. Some are simple construction designs. others are true scale. Then again, you may already have them.
Cheers.
Paul.
Nov 06, 2008, 12:21 AM
NeverAgainVolunteerYourse lf
nick_75au's Avatar
Looks like Nexus tide will be the go, thanks Paul, see you on Saturday.
Nick
Nov 11, 2008, 08:01 AM
NeverAgainVolunteerYourse lf
nick_75au's Avatar
Started the build , bottom, stem, fwd deck cut out and assembled, tommorow will be the aft deck, stern etc then hull sheeting by the weekend. So far cost has been nil. It will be a little over 1500 mm long, 300 mm wide. 2.5 times the plans. theres enough room betwen the two bulkheads for 2, 24 Ah batteries and the two big motors. the bow has enough room for every bit of electronics I can think of. Including a laptop I think.
Nick


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Got the stuff I want to use, but no idea what plane to put them in, seeking help! GyroRon Electric Plane Talk 6 Oct 18, 2007 01:54 PM
Yippee! Got some of my stuff in today.. RC_Soaring Electric Sailplanes 2 Feb 15, 2007 05:23 PM
Anyone in the LA area want to sell me some Fan Fold Foam? tolladay Foamies (Kits) 7 May 23, 2003 02:50 AM
I want to use two aileron servos in my Vortex CC Joe Elston Electric Plane Talk 1 May 30, 2001 08:26 AM