YTL-710 in 1:10

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Expand view Topic review: YTL-710 in 1:10

Re: YTL-710 in 1:10

by PATMAT » Sun Mar 01, 2009 10:03 pm

Guys, it's been fun... but this thread will now continue at
http://www.rcgroups.com/forums/showthre ... st11694801

Pat

More mast...

by PATMAT » Sat Feb 28, 2009 5:50 pm

The mast is all brass, some 30+ solder joints. Base is 3/8" tube. The lamp platforms and ladder rungs are all home photo-etched (rungs are flame-cut parts, not round stock); see my P-E how to at:
http://www.rcgroups.com/forums/showthread.php?t=1009007

I'm also working on the lamps with their lenses, which are about 1/2" diameter... more later!
Attachments
Mast in place.
Mast in place.
P-E rungs.
P-E rungs.
and P-E lamp platforms.
and P-E lamp platforms.

Re: YTL-710 in 1:10

by rmay » Fri Feb 27, 2009 11:15 am

Pat - I rarely would build the same subject twice, but after seeing what an excellent job you are doing it makes me want to revisit the YTL. But there�s a FFG keeping me busy for now. Maybe after the ten other boats waiting for my �free� time :thumbs_up_1:

Miscellaneous...

by PATMAT » Thu Feb 26, 2009 8:16 pm

Lots of stuff in process right now... here are a couple updates...
Attachments
Soldered brass mast getting started.
Soldered brass mast getting started.
Detail of hatch, and tool box which hides the light switches.
Detail of hatch, and tool box which hides the light switches.

Re: YTL-710 in 1:10

by PATMAT » Mon Feb 23, 2009 7:01 am

Thanks!
For size reference- those stack pipes had to be turned from 1" PVC bar stock...

Re: YTL-710 in 1:10

by Dave Wooley » Mon Feb 23, 2009 6:27 am

A top quality build , I like the hatch and the detail work on the stack.
Dave Wooley

Re: YTL-710 in 1:10

by Cadman » Sun Feb 22, 2009 10:19 pm

Love the louvered grill on the back of the stack.

Etch

by PATMAT » Sun Feb 22, 2009 9:45 pm

OK, maybe a couple etched part pics.

Hey, do you sign your work? You should! At least put a plaque in the model.
Attachments
Laser printer toner transferred to the brass. One piece has the green "foil" disappointingly applied... the stuff hardens the mask.
Laser printer toner transferred to the brass. One piece has the green "foil" disappointingly applied... the stuff hardens the mask.
Lifering brackets etched, and one bent. And a somewhat rustic nameplate etched in relief.
Lifering brackets etched, and one bent. And a somewhat rustic nameplate etched in relief.

Details, details...

by PATMAT » Sun Feb 22, 2009 7:58 pm

Lots more time consuming stuff this weekend that leaves me with surprisingly little to show off... but progress is happening, I tell ya!

I hoped to have a bunch of etched brass parts to show today... spent most of the day on the process (a royal PITA)... involves a laminator and "toner transfer paper" and an ironing board when the laminator's not up to par and "foils" (long story) and brass sheets and had to buy a hot plate to keep the ferric chloride warm and there's a mess all over and my ferric chloride is spent and I don't think Radio Shack carries it anymore, so the parts aren't finished yet... but it's real neat when it works. Th etchings will go on the mast, and handrail brackets and such.

Did start with some cast resin parts, the hinge and latch hardware for the hatches. And spent much of yesterday applying "rivets" around ports and windows... yes, those are pin heads for the most part, but some are from my Starwoods Rivet Kit (e.g., dots of glue applied by a syringe), where I didn't want to take a chance of drilling through the wall to the interior.
Attachments
Riveted the house.
Riveted the house.
Finished the stack details. Diesel stacks carry small pipes from the engine and auxiliaries, and may actually house mufflers. The curved louver was fun.
Finished the stack details. Diesel stacks carry small pipes from the engine and auxiliaries, and may actually house mufflers. The curved louver was fun.
Topped the steering column with a compass binnacle.
Topped the steering column with a compass binnacle.
Resin parts a'casting.
Resin parts a'casting.
12 pins and a "brow" for each porthole. A hinge part is posing on the hatch.
12 pins and a "brow" for each porthole. A hinge part is posing on the hatch.
A real hatch with it's hardware.
A real hatch with it's hardware.

Re: YTL-710 in 1:10

by Dave Wooley » Thu Feb 19, 2009 3:17 pm

Very well thought through mechanics and detail . :thumbs_up_1: :thumbs_up_1: :thumbs_up_1:
Dave Wooley

Re: YTL-710 in 1:10

by Richard OMalley » Thu Feb 19, 2009 6:30 am

What detail ! Very nice
Richard

Search light

by PATMAT » Sun Feb 15, 2009 11:57 am

Installed the search light. Using similar hardware as with the wheel, I set up a 1:2 drive to obtain a �90� motion with a normal servo.

The light itself is machined from PVC barstock, with reflector, lens, and high intensity LED from a flashlight. It's about 1" diameter. Needs a little more detailing to look like a real lamp- see the real examples below.


Youtube video of light in motion:
http://www.youtube.com/watch?v=0qH2hbn1w6c
Attachments
Search light on a Corps of Engineers ST tug, less it's lens.
Search light on a Corps of Engineers ST tug, less it's lens.
CoE_light.jpg (13.43 KiB) Viewed 2252 times
Carlisle Finch catalog image. Note the second yoke used for elevation.
Carlisle Finch catalog image. Note the second yoke used for elevation.
Light parts
Light parts
Earphone wire is nice, with 2 conductors in a single sheath, looks like real cable. Very fine, don't use it for long runs.
Earphone wire is nice, with 2 conductors in a single sheath, looks like real cable. Very fine, don't use it for long runs.
Search light in place on temporary blocking. Roof comes later.
Search light in place on temporary blocking. Roof comes later.
1:2 chain drive for the search light (upper).
1:2 chain drive for the search light (upper).

Steering

by PATMAT » Sat Feb 14, 2009 9:07 pm

I really appreciate the work that goes into super miniaturization of some models... and I'm glad someone else does it! That's a nice feature of this big model- lots of room for my fat fingers to work in, lots of room for mechanical installations. Like the steering.

I want the big 4" ship's wheel to spin when I move the rudder. So I set up a 3:1 gear-up drive from a servo in the forward trunk. But rather than using gears, I set it up with chain drives... 1/8" pitch miniature nylon chain, which runs on sprockets from ServoCity-- you can get sprockets that attach directly to the servo, cool!

The steering pedestal is similar to what I've seen in some of the ST tug photos, it will get a compass on top later. But you can see how I used pieces of 1" square aluminum tube, bronze bearings, and the sprockets and chains to build up the pedestal. A shaft sneaks forward and into the forward trunk, where another chain drive connects to the servo. The servo of course will be Y'd into the rudder signal.

The whole mechanism runs smoothly and with little friction. Sweet.

Youtube videos of the mechanism:

http://www.youtube.com/watch?v=8Eok9ZMie8Y
http://www.youtube.com/watch?v=EwPLSY84gXs
Attachments
Steering pedestal under construction
Steering pedestal under construction
Servo drive
Servo drive
Pedestal and wheel loosely installed
Pedestal and wheel loosely installed

Re: YTL-710 in 1:10

by Cadman » Thu Feb 12, 2009 1:03 pm

Sharp, it's the attention to those little details that really make it look good.

Windows

by PATMAT » Wed Feb 11, 2009 8:09 pm

As can be seen in the photo below, the ST/YTL tugs have vertical sliding windows-- just like most all tugs. In this scale, I figured I had little excuse for not making mine function.

So again, the walls are built with pockets. and the frames accept the sliding windows. Here's my first one, which features styrene sash frames and 1/16" thick real glass. The glass is cut a little narrower than the frame, and some braided nylon line is laid into the sides to give some friction. Kind of a pain actually, getting the fit just right.
Attachments
The original YTL-710 with one window opened.
The original YTL-710 with one window opened.
Window sash
Window sash
Closed...
Closed...
Open.
Open.

Re: YTL-710 in 1:10

by PATMAT » Tue Feb 10, 2009 10:49 pm

Every night, a little more!

Wrapped the stack's skeleton with 2 layers of 1/64" plywood (3 layers of 0.005" veneers- wow, how do they do that??), and then a layer of styrene for the steel look. Strong. Needs detailing still.

Built a plywood bench in the back of the wheel house... not much luxury in this little boat!

The ceiling is removable for now to allow for interior construction access, but will be fixed permanently in place and then topped with the roof panel later. Life is easier if you predrill the beams for the wiring! Roof will carry nav lights, search light, and interior cabin light. All in good time.

The wheelhouse floor will be removable for slightly more difficult access later on, but it's still pretty big. The speaker mounts in this floor, which is drilled through and then loosely covered with styrene. With the windows open, sound will get out just fine, and the entire hull will be the speaker enclosure.
Attachments
The stack, mostly done.
The stack, mostly done.
Bench in back, and ceiling panel.
Bench in back, and ceiling panel.
Wheelhouse floor & speaker.
Wheelhouse floor & speaker.

Re: YTL-710 in 1:10

by PATMAT » Mon Feb 09, 2009 5:57 pm

Cadman wrote:Pat how are you doing the raised lip around the doors?
"Flat" part is just a cutout, while the lip is just a strip glued around the inside of the door frame. Not quite right, there should be a ledge inside for the dogs to engage on... I'll think of something!
The doors are about 6" high... I'm thinking vac-formed...

Re: YTL-710 in 1:10

by rmay » Mon Feb 09, 2009 4:24 pm

Sorry, "Guest" was Me! :wave_1:

Re: YTL-710 in 1:10

by Cadman » Mon Feb 09, 2009 4:21 pm

Pat how are you doing the raised lip around the doors?

Re: YTL-710 in 1:10

by Guest » Mon Feb 09, 2009 3:34 pm

"Hate to knock a guy when he's dead, but the late Tom Hershey's tug " Not to join in, but I also noticed the front ports were at the wrong level when I built mine. But of course after looking at how good yours is coming out - I won't throw rocks! I see so many things I would go back and change on my tug. Oh well, that was only my third scratch build, so what the heck - live and learn.

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