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Old Aug 05, 2006, 04:37 PM
Taking care of the pond.
MILLERTIME's Avatar
United States, CA, Sanger
Joined Apr 2004
7,337 Posts
Build Log
TUG Jr.

I thought if Pat can do it I will try. Thanks Pat

So Im building a Lindberg Diesel Tug conversion.
I started by gutting a old Futaba servo. I made longer wires for the motor.
I soldered the motor wires to a mini pin plug, and glued it to the circuit board.
Then I coated the circuit board with 30 mi. epoxy, makes a neat little package.
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Old Aug 05, 2006, 04:55 PM
Taking care of the pond.
MILLERTIME's Avatar
United States, CA, Sanger
Joined Apr 2004
7,337 Posts
Then I made a stuffing tube out of brass tubing with a 1/16 shaft. I know the oilier is overkill, but I like oilers. I will use the original prop.
Next I made a motor mount out of aluminum, and attached it to a piece of wood I had mounted in the bottom of the hull.
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Old Aug 05, 2006, 08:16 PM
What tree?
Rampage's Avatar
Yucca Valley, California
Joined Aug 2005
2,759 Posts
This question is totally n00bish, but why the potentiometer? Why not just use an ESC? I'm very new to the boating world and I see a lot of people still using manually-operated electronics.

Is it heat-related?
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Old Aug 05, 2006, 11:30 PM
KC8WPF
CG Bob's Avatar
Euclid, Ohio, United States
Joined Sep 2004
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Quote:
Originally Posted by Rampage
This question is totally n00bish, but why the potentiometer? Why not just use an ESC? I'm very new to the boating world and I see a lot of people still using manually-operated electronics.

Is it heat-related?
The pot is part of digital proportional servos, and has been for over 30 years. The pot is part of the servo electronics and helps to center or "zero" the motor; when the transmitter sticks are in the neutral position, the servo motor does not turn. The rest of the servo electronics functions like an ESC. Sometimes you have to put in a new potentiometer.

The new generation of digital servos may not have a pot - I haven't looked inone yet.
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Old Aug 05, 2006, 11:58 PM
What tree?
Rampage's Avatar
Yucca Valley, California
Joined Aug 2005
2,759 Posts
Aah. I see. I hadn't noticed it was servo motor powered..Maybe I should have read it.
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Old Nov 28, 2006, 12:30 AM
Taking care of the pond.
MILLERTIME's Avatar
United States, CA, Sanger
Joined Apr 2004
7,337 Posts
Back to the build
Im making the deck removable. I made a wood frame and put it inside the hull. I will put a coat of silicon on the wood, and use screws to hold the deck down. I used clear plastic (2liter coke bottle) to raise the coaming inch.
Sea trials went pretty good. Speed looks scale, however it will not back up straight. I might need a bigger rudder.

Don M.
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Old Dec 09, 2006, 09:28 PM
Pushing & Pulling
USA, WA, Battle Ground
Joined Jul 2005
100 Posts
Don, depending on which way it backs may make it more realistic. Most real vessels have right-hand turning props (clockwise when looking at the stern) when moving foward. When in reverse they turn counter-clockwise. Due to several factors (water density differences, centrifical forces also called "prop walk" and others)the prop tends to make the stern of the boat move to port. This is a very real occurance on single screw vessels. Single screw inboard vessels (from tugs to ships to inboard ski boats) do not back in a straight line...the rudders are only marginally effective and in most cases will not overcome the propeller forces that make the stern walk to port. This is where the term "back & fill" comes from in boat handling lingo. So if it backs to port I say leave it...if it backs to starboard...then something else is wrong!
-Jeremy
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Old Dec 17, 2006, 06:36 PM
Taking care of the pond.
MILLERTIME's Avatar
United States, CA, Sanger
Joined Apr 2004
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More work on Tug Jr.
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Old Aug 09, 2008, 08:32 AM
Retired for now
Bonita Springs,Fl.
Joined Sep 2007
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Millertime,what happened to your handrails and your rudder? Pete
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Old Aug 10, 2008, 02:03 AM
Taking care of the pond.
MILLERTIME's Avatar
United States, CA, Sanger
Joined Apr 2004
7,337 Posts
There in a box some place, I've been working on my big tug handrails.
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Old Aug 10, 2008, 07:39 AM
Retired for now
Bonita Springs,Fl.
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Very good looking tug Millertime. Nice job on the railings too. Pete
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