Walrus class 1/60 scale - Scaleshipyard

[salmon]

On the bench, I saw that my wheel handles did not help with air. There is not enough space to break the surface tension.
You might be able to see the water trapped.


You need about 3/16" to 1/8" to break the tension and allow air to escape. Like I did at these points in the rear end of the hull. I made these oval, when I do straight holes, it seems you need to go larger hole. The oval seems to give me the extra space and it can look more like it is supposed to be there. You know what I mean?


To make sure I get the weights back correctly, I taped around the edges. I will let the hull to dry out and affix them as tested.


The small weight would be right above rear anchor point. So I will need to shift it back a little and retest the trim.

[Ralph --- SSBN 598]

Tom, I find 1/8" holes work okay.

I drill the 1/8" hole as the vent then I use a 1/4" drill bit and hand turn a bevel on the under side.

[salmon]

Ralph, That is exactly what I do when making a vent hole. Tapering it underneath, as I understand it, traps the air and because of the thinner edge it does not hold it, allowing the air to escape.

[bob the builder]

Re: trimming: I know a lot of people do that process differently, but I seem to have good luck with trimming surfaced first. Once you nail surface trim, you can adjust submerged trim via foam above the waterline. This does not affect your surface trim and dials in your submerged. By doing submerged first, you may end up with skewed surfaced trim and no way to adjust it without screwing up submerged trim. You end up in a perpetual loop of adjustments.

I just finished up trimming one of Pete's excellent Ohio kits. You can view the trimming process video here and the final overview and maiden voyage here.

[salmon]

There are different ways, but really not. Trim on surface, then adjust submerged. Trim submerged, then adjust surfaced. David Merriman and Will Oudmayer taught me submerged first. Either way it is several trips to the test tank. I think the most important part is the initial weight being installed, how you distribute it, and being able to move it around. At least that is what I have found. I think also placement of your ballast tank would also be up there. After a while, you are doing both. It maybe as simple as what you and I were taught when we first did a submarine. However we initially learned, is what we continue to practice.

[salmon]

Final test.
I talked to Will about the trim and he said that works. If the knob goes to 75% or more it will be fine.
I will apologize to all that are enduring frozen water or sub zero temperatures for being a wimp. It is cloudy and raining, tonight it will be in the low 30 degrees. So the test tank was even colder than before and without the sun there was no love in the air.
Anyways, I wanted to verify that the final adjustment made yesterday were still good after RTV rubber was used to affix them and to see if putting the sub in the water if it will still sit well (the piston needs to be cycled to get the air out). Fun to look at as it was.


Once the piston was cycled, I set my dial to just at or below the surface.


That brought the sub to this point


I have this much room to full ballast tank more than enough to dive and I have plenty of lift available.


Goofed around a bit more, but I got cold and decided it is done.


Am I going to do more to this sub? I might. I may do weathering, but for right now I will run it for awhile to reacquaint myself with the way it is now. Maybe tomorrow, I will take it to a local lake or see if I can go to LA to run with those wonderful friends there. I will not be able to go to the next FunRun because of shoulder surgery on the 5th, so i need to get a run in if I can swing it.
Thank you for following. I'll post some updates.
Peace,
Tom

[Ralph --- SSBN 598]

Tom, just to let you know. Will, Mike and I have plans for this coming Saturday. Feb 23rd, weather permitting.
The forecast is looking good. 57F.

[salmon]

Thank you! Considering it sir! I will let you know if I can make it.

[salmon]

The plan is now to be there!

[salmon]

It was a wonderful time at Yorba Linda Regional Park. Cool in the morning, but warming up nicely by noon. The Walrus got damaged on the way down, by accident, a blanket was thrown over the sub and in that time the periscope snapped. It was held on by the wire inside it, but barely. The only thing pond side was some silicone and I applied a dab at the break. It held long enough to get it back to Las Vegas.

The sub did good. It seemed to move between hovering great to being slightly aft light.


The neighborhood got a little crowded. Ralph Fendley's Skipjack snuck up behind me.


Ran for a total of 3 1/2 hours (could have gone longer, but it was time to wrap up the day).


Went to get some peace and quiet.


Wouldn't you know it I found a submarine parking lot with Will Oudmayer's Delta and Mike Dory's Akula.


It was a good day! Thank you guys!

[Ralph --- SSBN 598]

The depth of the water in the photo of the boats sitting on the bottom, is 4' to 5'. (maybe more)
It is off the end of a dock we use.

Nice photos, Tom.

[salmon]

After running my little Seaview, I needed some calm. That is where the Walrus comes in. It just is a relaxing boat to run.


It began as windy with a bit of chop in the water, but after an hour or so it calmed down a little. This sub once at periscope depth, did not care if it was choppy or not. It ran well.

[salmon]

Ran the Walrus today for 4 hours - had to stop because my bride was done with her hairstylist and lunch with a friend. My battery still had most of its charge. I still do not know how long this sub will run yet.


I had a minor hiccup.....My sub had piston control, rudder control, but no throttle! Did I throw my prop? No I could see it was still on. I thought maybe I stripped my dog bone. Stranded my sub sat out 20 or so feet off shore. The breeze was light and if it wasn't for a gentleman with an R/C sailboat, I would have waited for hours for the sub to come close to the edge of the water. A quick look and it turned out it was my fault. I did not strap down the WTC enough and it slipped out enough to allow the doggone to fall out. Easy fix and back in the water.


It was a great day altogether. Met a new friend and had several people ask about the sub.

[Ralph --- SSBN 598]

Don't you just hate a slipped doggone? (dogbone) ;^)

[salmon]

Hahaha - spell check I missed that one Ralph!