SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Aug 03, 2006, 02:19 AM
Sea Dragon-Lover
Umi_Ryuzuki's Avatar
PDX, OR
Joined Dec 2002
10,385 Posts
Build Log
An RC SDM tug

I will probably regret that thread title when I want to find this thread later.

Everyone has their preferences I guess my building preferances seem to lead to a lack of plans, Lack of images, and serious lack of available kits.
There just aren't any.

At least not for what I always seem to get it in my head that I need to build.

With all those factors available, I start drawing, No not with a computer, that would be too easy... I pick up tracing paper an H lead, lead sharpener, straight edge, french curves and my favorite 0.25 technical pen.
All this leads to scanning, enlargement and tiled printing,... trimming and taping, and finally to,... Hmmm, Maybe I should build a smaller mock up first.

Perhaps this thread should be converting plywood and foam to RC. Day One.


SDM tug boat ship docking module rc model buld
Umi_Ryuzuki is online now Find More Posts by Umi_Ryuzuki
Last edited by Umi_Ryuzuki; May 08, 2013 at 04:14 PM.
Reply With Quote
Sign up now
to remove ads between posts
Old Aug 03, 2006, 08:36 AM
Give the dog a bone
Boatfox's Avatar
USA, NV, Las Vegas
Joined Aug 2005
828 Posts
I guess this thing....but I don't think I see enough Depth...Hmmmm
Boatfox is offline Find More Posts by Boatfox
Reply With Quote
Old Aug 03, 2006, 10:33 AM
Grumpa Tom
Kmot's Avatar
United States, CA, Los Angeles
Joined Sep 2003
23,598 Posts
Quote:
I start drawing, No not with a computer, that would be too easy...
Says you!

I couldn't draw with a computer if I had one! Oh wait, I do! But I do not know how to draw on a computer. I wish I did. I do it the old fashioned way too. Paper and pencil and circular items for my "french curve".
Kmot is online now Find More Posts by Kmot
Reply With Quote
Old Aug 03, 2006, 11:04 AM
r/c ships and workboats
bellingham, wa
Joined May 2006
4,655 Posts
Theese boats are not all that deep for their width on the hull. The twin skegs ( one for & aft) are what accounts for most of the draft. Saw the test model for the "frisbee" tugs as it was called then.
keith S is offline Find More Posts by keith S
Reply With Quote
Old Aug 03, 2006, 11:41 AM
Sea Dragon-Lover
Umi_Ryuzuki's Avatar
PDX, OR
Joined Dec 2002
10,385 Posts
Boatfox, you are way too quick, I was hoping to get them fiberglassed before anyone figured out what it was.

The SDM only have a 16 foot draught. And most of that is the skegs and the Zdrives. I was surprised that the design of the hull is so simple.
The SDM-II had the pilot house and winch moved forward. This improved the steerage while pulling a tow.

Since the project has been identified, here is a look at the plans I drew up (I still cheated...) and the larger hull that was also done yesterday.
Umi_Ryuzuki is online now Find More Posts by Umi_Ryuzuki
Reply With Quote
Old Aug 03, 2006, 04:18 PM
Taking care of the pond.
MILLERTIME's Avatar
USA, CA, Fresno
Joined Apr 2004
7,317 Posts
OH, the big boat had a babby boat.

HA HA
MILLERTIME is online now Find More Posts by MILLERTIME
Reply With Quote
Old Aug 03, 2006, 10:17 PM
Sea Dragon-Lover
Umi_Ryuzuki's Avatar
PDX, OR
Joined Dec 2002
10,385 Posts
First coat of epoxy resin and fiberglass done this morning, and ready for a second run.
Umi_Ryuzuki is online now Find More Posts by Umi_Ryuzuki
Last edited by Umi_Ryuzuki; Oct 17, 2010 at 05:57 PM.
Reply With Quote
Old Aug 03, 2006, 11:54 PM
Give the dog a bone
Boatfox's Avatar
USA, NV, Las Vegas
Joined Aug 2005
828 Posts
Quote:
Originally Posted by Umi_Ryuzuki
Boatfox, you are way too quick, I was hoping to get them fiberglassed before anyone figured out what it was.
Hope I didn't spoil the surprise.....It should come as a compliment that I was able to determine the vessel by your skilled foam carving.
Boatfox is offline Find More Posts by Boatfox
Reply With Quote
Old Aug 04, 2006, 11:09 PM
Sea Dragon-Lover
Umi_Ryuzuki's Avatar
PDX, OR
Joined Dec 2002
10,385 Posts
Boatfox, Someone would have guessed. You were just sooner than later.


I managed two layers of glass and a third coat of resin yesterday.

Today I sanded the hulls and stood up the 1/96 deckhouse.
Umi_Ryuzuki is online now Find More Posts by Umi_Ryuzuki
Reply With Quote
Old Aug 06, 2006, 01:16 AM
Sea Dragon-Lover
Umi_Ryuzuki's Avatar
PDX, OR
Joined Dec 2002
10,385 Posts
I spent some time hunting steering gears today, the largest 32 pitch gear the local hobby shop has is 76 teeth. A bigger one will cost mucho dinero. So that is on the back burner and won't be installed till later.

A lot of sanding done today, the hulls are hopefully on their finish coat of resin.

Worked on the superstuctures a little.
Umi_Ryuzuki is online now Find More Posts by Umi_Ryuzuki
Last edited by Umi_Ryuzuki; Aug 06, 2006 at 03:41 AM.
Reply With Quote
Old Aug 06, 2006, 04:39 AM
sensitive artsy type
Treetop's Avatar
Tucker, Georgia, United States
Joined Feb 2004
3,167 Posts
Quote:
The large peices are stapled together so thay they match. I always regret that later.
An alternative would be double stick heavy duty carpet tape. What they use to stick carpet down, (I guess).
Treetop is online now Find More Posts by Treetop
Reply With Quote
Old Aug 06, 2006, 10:16 AM
Registered User
McAlester
Joined Nov 2004
1,370 Posts
Umi,
For gears try here;

www.hpcgears.com

Not saying it's the cheapest place by any means (shipping mostly), but if they don't have it, or can't make it, it can't be done. Then again, 'dumpster-diving' is almost always a practical option... Hows that for extremes?
- 'Doc
LtDoc is offline Find More Posts by LtDoc
Reply With Quote
Old Aug 06, 2006, 12:11 PM
Sea Dragon-Lover
Umi_Ryuzuki's Avatar
PDX, OR
Joined Dec 2002
10,385 Posts
LTdoc,

I had a quick look, HPC is twice the price of SPD/SI and there, the gear I want is $48 bucks.


Quote:
Originally Posted by Treetop
An alternative would be double stick heavy duty carpet tape. What they use to stick carpet down, (I guess).
Staples aren't the problem, When I double cut finish and sub deck like that, After I get through fiberglassing, the finish deck is too small by almost a 1/16" all the way around. The thing is, I have done that on at least three builds now...
Umi_Ryuzuki is online now Find More Posts by Umi_Ryuzuki
Last edited by Umi_Ryuzuki; Aug 06, 2006 at 07:32 PM.
Reply With Quote
Old Aug 07, 2006, 12:23 PM
Sea Dragon-Lover
Umi_Ryuzuki's Avatar
PDX, OR
Joined Dec 2002
10,385 Posts
Okay, day 4.
It feels a little bogged down, I had to do one more glass coat to the small SDM hull.
But that one won't be running right away.

The large SDM hull got its final sanding yesterday, and I chipped and melted most of the foam out of the center. I then rough sanded the interior, and epoxied a piece of plywood into the bottom. This will support the motor and drive mounts and the rest of the equipment. While everything was curing I worked on the skegs and superstructure.

Who has a big single spool 1/48 winch for this thing?
Umi_Ryuzuki is online now Find More Posts by Umi_Ryuzuki
Last edited by Umi_Ryuzuki; Mar 22, 2007 at 12:57 AM.
Reply With Quote
Old Aug 07, 2006, 05:13 PM
Dragon Slayer
ropanach's Avatar
Shelton,WA
Joined Nov 2004
1,839 Posts
she is looking good Umi, have you realy got the time for this with all your other projects? Or is this a short brake? So you can do something for your self?
ropanach is offline Find More Posts by ropanach
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
The most ridiculous use of an RC Airplane soholingo Electric Plane Talk 64 Dec 23, 2002 03:16 AM
How can I learn to fly an RC jet plane zemuron Electric Ducted Fan Jet Talk 12 Dec 20, 2002 10:55 PM
my cousin wants an rc plane Pablito Parkflyers 10 Jul 22, 2002 12:55 AM
Converting the Eco to an 8mm Main shaft? Foxtrot Electric Heli Talk 1 Jun 25, 2001 02:05 PM
help converting Cox toy to RC Randy S Parkflyers 2 May 26, 2001 12:33 AM