USS SHARK SSN-591: Refit Log 2019-04-17 (1:48 DeBoer Skipjack)

[QuarterMaster]

Anything additional on your boat? My 1/48th SKIPJACK is coming up quick to be worked on...

Other than she's taking a long winters nap?

Two very recent topics here at NDF's are based on her construction methods:

Right you are Bob Martin...

Diver Box questions w/answers

The rest I suggest forum searches, But to be honest, couldn't find my TOPICS specifically, I tried SSN-591, yields a lot more than just mine, or none at all.
I suggest crawling through the Builders and General topic forums for topics labeled "USS SHARK SSN-591: Refit Log..." or "USS SHARK SSN-591: Build Log..."

Here is my Google Photo Gallery, which you can browse through:
RC Subs: USS SHARK SSN-591 (1:48 Scale)

Finally, my clubs YouTube Channel with video's of her and plent of other "stuff":
ESMM/SubComLI Video's

If you haven't already, don't forget Bob Martin's YouTube Channel which contains excellent idea's for your upcoming build!
RCSubGuy

Particularly...
1:48 DeBoer Skipjack RC submarine

and this...
1:48 Skipjack Class RC Submarine - DeBoer Hulls

Later this coming spring I plan a detailed 6 Part walk through video of her, but this is what I have for now.

[sgtmac1]

Anything additional on your boat? My 1/48th SKIPJACK is coming up quick to be worked on...

[DMTNT]

http://www.tcm.com/mediaroom/video/2...tocopulos.html

Rage, rage against the dying of the light...

[firemanjim]

Now you guys got me double-checking my work!

I really didn't notice anything but very predicable and stately performance from Jim's boat when I took her out for her maiden voyage. Turns to both starboard and port exhibited similar characteristics. I'm really picky about that kind of thing on the bench from a throw perspective, too, so I don't know that that's the case. Of course, she traveled a distance in the gentle hands of the shipping company, so anything could have happened in transit.

Here is the video link to your boat: https://www.youtube.com/watch?v=95akrfjVigI. If you check the 15:00 mark (ish) there is a good shot of her turning to port in semi-submerged trim. Nothings seems wonky...


Bob

Bob, you did awesome work on my boat, what's happening now is no reflection on you buddy.

Yeah, I did have to do some repairs when I got the boat that I didn't tell you about namely the starboard dive plane because of UPS slamming the box apparently.
I fixed the problem but then when I took her out is when I noticed this latest problem.

No worries Bob, you did an awesome job on my boat....this is just Murphy's law at work, or as I like to say (and quite often I might add) this is the "Corrales Curse" at work......lol.

[QuarterMaster]

Duh, yeah, it's the five blade, not 4.....my bad.
She looked good when I took her out except for when I tried to turn to port and ended up switching between reverse and port because she kept moving to starboard.
Bad enough that was happening but then , wouldn't you know it, I started getting an audience at the worst possible time....lol.

Ah well, I'll try again soon with better results hopefully and video footage!

Yeah...I more than understand "getting an audience at the worst possible time", cost me a Krick U-25. Even wrote an Article about it back in the September 1996 issue of the SCR. Issue 26 Page 41 ""Grey Lady Down". I love answering questions and showing what we do......when it works lol!!

Oh....this was on the page before it! Ooooooohhhhh Myyyyyyyyyyy!! (ala George Takei) Nice legs.........





Back to your SHARK......

It would be interesting to see some video of the rudder being cycled back and forth from the stern with the boat on the hard.

Now you guys got me double-checking my work!

I really didn't notice anything but very predicable and stately performance from Jim's boat when I took her out for her maiden voyage. Turns to both starboard and port exhibited similar characteristics. I'm really picky about that kind of thing on the bench from a throw perspective, too, so I don't know that that's the case. Of course, she traveled a distance in the gentle hands of the shipping company, so anything could have happened in transit.

Here is the video link to your boat: https://www.youtube.com/watch?v=95akrfjVigI. If you check the 15:00 mark (ish) there is a good shot of her turning to port in semi-submerged trim. Nothings seems wonky...


Bob

No need to Bob, I agree regarding the shipping company! She swam like a fish and I saw the throw of the rudder as I watched the video.

FWIW, I personally unwrapped that 688 I got from you and you could not have done a better job covering the tail feathers on her! We saw what happened to the lower rudder and Port stern plane. I loathe shipping companies, UPS, FEDEX, USPS...all of them, gorilla's in a Samsonite commercial and protected by Unions. BTW, the conversion to Flight 2 688 is getting started. "Maybe" this year, certainly Spring 2020. Want to wrap up PROTEUS.

[RCSubGuy]

Yeah, she's a big girl Ed and I wasn't expecting her to turn on a dime, but she really has a problem turning to port.
I'm gonna try adjusting the throw on my rudder and if that don't work, I'll hit you up on that file....thanks!

Now you guys got me double-checking my work!

I really didn't notice anything but very predicable and stately performance from Jim's boat when I took her out for her maiden voyage. Turns to both starboard and port exhibited similar characteristics. I'm really picky about that kind of thing on the bench from a throw perspective, too, so I don't know that that's the case. Of course, she traveled a distance in the gentle hands of the shipping company, so anything could have happened in transit.

Here is the video link to your boat: https://www.youtube.com/watch?v=95akrfjVigI. If you check the 15:00 mark (ish) there is a good shot of her turning to port in semi-submerged trim. Nothings seems wonky...


Bob

[firemanjim]

Duh, yeah, it's the five blade, not 4.....my bad.
She looked good when I took her out except for when I tried to turn to port and ended up switching between reverse and port because she kept moving to starboard.
Bad enough that was happening but then , wouldn't you know it, I started getting an audience at the worst possible time....lol.

Ah well, I'll try again soon with better results hopefully and video footage!

[QuarterMaster]

Yeah, it's the one Bob built for me and yeah, I tried to lower the stern and see if that would help response and it helped slightly but it still tends to swing to starboard a lot in comparison to port which is odd because in Bob's video, it worked perfectly.
The prop is not the stock one that DeBoer provided but is a four blade job Bob installed that he had in hand that is RH.

I was sailing it at the dam at Garner State Park which is only about 4 foot in depth and almost crystal clear with barely any current.
As big as she is, anything less than a pond or a lake is way too teeny....lol.
Love this boat, just gonna have to keep tweaking with her a bit till she behaves.

Yeah, I pulled the video at work. I saw the 7 bladed stock prop in the 1st video, but it looked like the 5 bladed RH speed prop, not 4 to me. Regardless, looked good.

So she should walk to STBD, steering to Port, not the opposite as you described. Propeller walk
I took advantage of it on my MacGregor 26X, Bristol 29.9 and Pearson 323. Made all the difference. I still use the small boat handling skills on my model subs.
"Docking is fun!"

Sounds like you have an excellent running venue. Give us some video's!

BTW, Bob makes everything look perfect! (Compliment)

I've been tweaking this bi-otch for decades lol

[firemanjim]

Yeah, it's the one Bob built for me and yeah, I tried to lower the stern and see if that would help response and it helped slightly but it still tends to swing to starboard a lot in comparison to port which is odd because in Bob's video, it worked perfectly.
The prop is not the stock one that DeBoer provided but is a four blade job Bob installed that he had in hand that is RH.

I was sailing it at the dam at Garner State Park which is only about 4 foot in depth and almost crystal clear with barely any current.
As big as she is, anything less than a pond or a lake is way too teeny....lol.
Love this boat, just gonna have to keep tweaking with her a bit till she behaves.

[trout]

Sorry David, it is too late!

[He Who Shall Not Be Named]

http://www.tcm.com/mediaroom/video/2...tocopulos.html

[QuarterMaster]

Yeah, she's a big girl Ed and I wasn't expecting her to turn on a dime, but she really has a problem turning to port.
I'm gonna try adjusting the throw on my rudder and if that don't work, I'll hit you up on that file....thanks!

RH or LH prop? Better yet, CW OR CCW rotation viewed from the stern?

It's the stock prop right? I think HWMNBN can attest they are more like paddles than true props and may induce a greater prop walk, which may make turning in one direction more difficult. In your case Port.

Is this behavior surfaced or submerged or both?

When running surfaced, you need to hold rise on the stern planes to bury the prop. I find using the trim lever/tab sufficient to do this. The shape of the bow on a modern nuke boat forces the bow down and the prop up. On the boat I served, 627 JAMES MADISON Class we were required to give 20° rise on the stern planes when running surfaced to negate the effect. This should get the upper rudder low too. Look at real life SKIPJACK's running on the surface on a good Bell, and you'll see the squat keeping that stern low!!

You can of course try running her directly away from you with rudder amidships and see if she prefers turning in the same direction each time. Do the same with her coming at you to cancel the effects of wind and current. This will indicate prop walk. Adjust trim to cancel, then try your turns.

This is the boat Bob made a video of, right? I'll take a look again but I didn't notice anything odd.

Again, 1:48 scale is typically not a pool boat.

[QuarterMaster]

I like to mix and match- still prefer to whittle away with hand tools, but see the potential of this for many things, and the price is now easily accessible. One aspect often overlooked is that they can be expert jig creators.

My sentiments exactly. It's just a tool that has it's place, like the hammer, screwdriver, exacto etc. Humans and the technology they use evolve. You can ask the dinosaurs what happens if you don't. In my field, the first Engineer out the door during a layoff is the one that refuses to accept the change. Whether it's software, procedures or process's.
After all we can't all get on sticking with bear skins and stone knives.

Every tool has it's role to play.

++ on the jig as well!!

FWIW, 3D Modeling has it's own craftmanship behind it.

[firemanjim]

Yeah, she's a big girl Ed and I wasn't expecting her to turn on a dime, but she really has a problem turning to port.
I'm gonna try adjusting the throw on my rudder and if that don't work, I'll hit you up on that file....thanks!

[Subculture]

I have a Creality Ender 2 printer. You can pick them up on ebay for ninety quid. Excellent little device although it does need a little tinkering to get the best out of it. Print quality matches the best of FDM machines. Print area is 15cmx15cm by 20cm high, sufficient for my needs. Some go for a larger format printer (e.g. Ender 3, CR10 etc.), but prices escalate fast, plus the machines take up more room, and I don't need a 20cmx20cm build plate.

Choosing a model depends on whether you want something to largely plug in and go, or something that needs assembling and little fettling here and there to get it 100%. Ender 2 is really only suitable for PLA printing though, as it doesn't have an enclosure, which you'll need for ABS. I think PLA is fine for our uses.

The main area of expertise in 3d printing is drawing out the CAD files and your skill in designing things. I use Fusion 360 for CAD and Cura for slicing. Cura is pretty straightforward once you understand what all the printer settings are for (there are a LOT). Cad is a bit more involved, especially i you want to make some more sophisticated shapes. I'm still a beginner at that.

I like to mix and match- still prefer to whittle away with hand tools, but see the potential of this for many things, and the price is now easily accessible. One aspect often overlooked is that they can be expert jig creators.