Akula 1/144 Scratch built

[bwi 971]

Don't they have grub screws wher you live!

Yes we have but regarding screws, I always buy the biggest quantity available in the longest length available. So I hade these laying around, and after cutting them to the desired length there suitable for my needs.

Grtz,
Bart

[bwi 971]

I'm working on the SOKS I have been doing some testing in the past regarding fabrication, more specific what is the smallest diameter I can manage.

Brass 1.5mm rod turned down diameter 1mm is the smallest I can do so I can still produce almost exact copy's.

I have divided them into 4 categories:

• Spikes (5pc)
• Tamps (7pc)
• Drops (7pc)
• Protectors (5pc)

This evening I finished the spikes, the 1.5mm rod needs to be trimmed down, for the moment I leave it on.

Grtz,
Bart

[HardRock]

Wow. That's hard to do.. Can't wait to see the others.

[george]

Hi
I have a question. What are SOKS and where on a submarine are they used?
George

[bwi 971]

SOKS stands for Systema Obnaruzheniya Kil'vaternogo Sleda or System for Wake Detecting and Tracking.
There are several locations for the SOKS sensors. There are ten points on the sail, three points on a fin on the casing, three pods also on the casing forward of the sail and several points and pods on the underside of the hull.
You can also find them on other Russian subs (SIERRA's VICTOR's)
Grtz,
Bart

[redboat219]

Any idea how they work?

[bwi 971]

Very litle info out there, this is what I found out from VEPR157 he is active on several forums:

It is a set of optical sensors that can detect when the submarine is in the wake of another submarine by using conductivity, temperature, salinity, radioactivity and other parameters. SOKS can only tell if the submarine is in the wake or out of it, so it's a little more difficult than using sonar.

The wake of a submerged submarine spreads out quite a bit (which is good, otherwise you would have no chance of finding it in the vast ocean) so the sensors are only able to tell if they're in or out of a wake. Because the wake is so large in extent, all SOKS sensors will have the same readings (i.e. the wake isn't so small that you can have differential readings, unless the submarine is right in front of you). The reason for multiple sensors at various places on the hull is to confirm that the wake is actually there and it's not just one sensor getting a bad reading.

grtz,
Bart

[bwi 971]

Drilling the SOKS holes in the sail.

The surface of the sail where I have to drill the hols in is angled and double curved to make things easier.

So I had to make an template to guide the 1mm drill while drilling and to make sure the drilled holes were parallel to the longitudinal axis of the sub.

The template was temporary fitted in the right position and the holes were drilled by turning the drill between the fingers, this made me feel what I was doing.

And NO there are not to many holes 10 for the SOKS and 5 for the protectors.

grtz,
Bart

[HardRock]

Protectors?????

[bwi 971]

Protectors?????

I have decided to build he K-480 “AK BARS” an AKULA I---FLIGHT I the 4th Akula constructed.
Amongst other things she has an early type of SOKS system the only sub equipped with that system.

• the vertical SOKS fin is flanked by two slightly larger fins.
• and the 10 sensors in the sail are protected by 5 spikes.

My AKULA will differ from most of the AKULA's out there.

Grtz,
Bart

[HardRock]

I learn something new every time you post.

[bwi 971]

I'm just sharing info received from others Scott....nothing more nothing less. That's why I like this forum.

Grtz,
Bart

[bwi 971]

Pushrod bowplanes,

I made a dog-bone connection to redirect the pushrod for the bowplanes to the bottom of the SD and fabricated some guidance taps to guide the pushrod all the way up to the fwd part of the SD.

Grtz,
Bart

[HardRock]

Are you getting much flex at the dogbone end? And did you consider using a pivoting arm instead of the dogbone?

[bwi 971]

I did consider a pivoting arm but I thought I could do it this way. Pivoting arms are restricting access, I have one in front to move the bowplanes.

I made the dogbone 10mm wide so I have a large contact area with the pushrod so that is covered regarding clearance and flex of the dogbone itself.
But I have indeed some flex from the pushrod within the gland of the endcap. So I have to make a guide on the endcap to support the pushrod/ dogbone.

If it doesn't work I make a pivoting arm afterall.

Grtz,
Bart