A Modern Harbor Tug - Page 6 - RC Groups
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Sep 18, 2009, 10:48 AM
"Irregular's Cobra Man"
Bilge_Snipe's Avatar

Size Tubing Please?


Toesup, I'm building two Springers side by side, which will be my second boat build. The first was a Victor V-12 kit. My question is, what size tubing did you use and did you pack your tubing with salt, before making your bends? A visitor at our pond yesterday said, he packed his tubing with bakers salt, which is finer then ordinary table salt. He couldn't remember the size of his tubing. Thanks for your anticipated help.
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Sep 18, 2009, 11:26 AM
USA'd ex Brit
toesup's Avatar
Quote:
Originally Posted by Bilge_Snipe
My question is, what size tubing did you use and did you pack your tubing with salt, before making your bends?
The tube in the pic is about 5/32" copper..

I generally use 1/8" bore Ali tube. Crimp one end and pack tightly with salt.. and crimp the other end shut, not allowing the salt any space to move.
When you start to bend, try to do it in one 'fluid' movement and not stop during the process..
Cut off the ends and clean up the tube.. and roll the tube back and forth until the salt is all clear from the inside of the tube.
Sep 18, 2009, 12:02 PM
"day ain't over yet-"
der kapitan's Avatar
Don't know if you're aware of this, but K-S Products does sell soft aluminum and brass tubing, which doesn't require packing, and bends comfortably around a motor for a cooling coil.

Sometimes hard to find, though---.
Sep 18, 2009, 12:27 PM
"Irregular's Cobra Man"
Bilge_Snipe's Avatar

Thanks


Thanks guys for your help and response, have a nice day.
Sep 18, 2009, 02:26 PM
Grumpa Tom
Kmot's Avatar
I bought a coil of annealed aluminum tube from Mcmaster-Carr. They have it in various diameters. It bends easily without kinking. I have made numerous cooling coils from it, and you can easily get the coil to be quite snug with tight wraps.

http://www.mcmaster.com/#5177k42/=3orbl9
Sep 18, 2009, 08:43 PM
"Irregular's Cobra Man"
Bilge_Snipe's Avatar
Thanks for the info and link kmot.
Sep 23, 2009, 11:04 AM
Registered User
Toesup, very impressive work. I really look forward to watching the development of this project.

Thought you might find these pics interesting. The tug " Independence " was just launched at the Derector shipyard in Bridgeport Ct. Built for Boston Towing and transpotation as an offshore support vessel. Length is 128 ft with a 44 ft beam. Equiped with Rolls Royce Z drives. Propulsion is two 16v4000 MTU with a total of 5,400 hp. The underbody looks massive out of the water. More pics of construction on the Derector website.
Sep 27, 2009, 05:52 PM
USA'd ex Brit
toesup's Avatar
Toesup Boat Werks update.

The wash ports and cut outs for the forward bollards have been made... and some filler to the insides of the hull where the deck is to be supported..
I've installed the drive mounts, the motor blocks and the motors.
I'm in the process of making up some support bulkheads for the staples, superstructure and the winch. The forward staple has yet to be finished and added to the bulkhead..
I've also developed a battery box... i dont want the battery rolling around in the hull when trying some pulling maneuvers!..
Sep 27, 2009, 05:54 PM
Registered User
Very nice, Mr Toes!
Sep 27, 2009, 06:14 PM
In The Sorrano Triangle
BOZINATOR's Avatar
What he said

jim (again)lol
Sep 27, 2009, 06:56 PM
WooHoo!
woodybob's Avatar
Nice toes, talk about complex cuts, look at that ply.
Sep 27, 2009, 07:16 PM
USA'd ex Brit
toesup's Avatar
Quote:
Originally Posted by woodybob
Nice toes, talk about complex cuts, look at that ply.
I know!...

I have to get all that woodwork in for support / strength round the staples / winch (I hate that tearing wood sound) and still be able to gain access to the motors and the tops of the drives...

Erm... "It was designed like that"...
Sep 27, 2009, 07:31 PM
WooHoo!
woodybob's Avatar
Yea...I'm thinking those cuts aren't random.
Sep 27, 2009, 07:38 PM
In The Sorrano Triangle
BOZINATOR's Avatar
Mr toes wears laser goggles and has bionic implants That can be the only explainsion....... I am sure of it now

jim
Sep 27, 2009, 07:40 PM
Grumpa Tom
Kmot's Avatar
Either that, or a lot of free time every day.


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