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RC Submarine Akula-II

Started by Sb_Maharana, August 07, 2011, 07:35:09 PM

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Sb_Maharana

Recently completed the hull, working on electronics, WTC, drive mechanisms etc. will post the updates as on progress. Studied some Akula submarines, and designed the plan as to suit my build.

ujjwaana

Wow!! This has a league of its own!! What is the material ? how did you mold it ? Its amazing.
Futaba 8FG Super | HK-450v2 | FA-22 Raptor |AXN Floater-Jet | FunJet | Black Horse Edge 540 | Amp Master 015 | 2.3M Big Brother

Sb_Maharana

thanks Ujjwal, first I make the master piece with simul wood, then cover up with fiberglass, then seprating the glass hull from the master piece(Pattern). Now the glass hull is treated as die, where further glass hulls are made. It looks simple but a very tedious job.
Now a days I make everything fiberglass so as to preserve my hardwork in the form of die, and to make another piece easily if required.

sunk?

hi mate.
hull moulds look good.  :)
how is the build coming along?
regards
don
regards
don
UK

roopeshkrishna

Maharana..its an excellent work...please share us the steps as it progress.. :thumbsup: :salute:
Phoenix.........

sunk?

hi mate.
how's the progress?
   regards
don
regards
don
UK

Sb_Maharana

@ Don Sir,
Not much progress. Got all the required electronics, accessories for it except the water pump.
Planing to complete the WTC this Saturday / Sunday. I was checking the size of WTC (posted the picture of the same). The drive system will have a reduction gear ration (3:1) and a seven blade properller. Yet to make the dive planes & rudders etc.

sunk?

hi mate.
looking good........:)
regards
don
regards
don
UK

Sb_Maharana

Just completed the Motor mount today; planing to complete majority of the work in next three days (holidays).

sunk?

hi mate,
excellent work there.......... good cooling too :)
regards
don
regards
don
UK

Sb_Maharana

Yes Sir,
Cooling / heat sink is must inside WTC,
machined the water seal tube + driving shaft with 5 x 10 x 4 mm bearing.

sunk?

hi mate.
this coming on nicely......... :)
will you use 'rubber' seal outside the bearing? or will the bearing be enough to keep water out at that depth?
regards
regards
don
UK

Sb_Maharana

Yes will fix a rubber seal and a collar if required.  

sunk?

hi mate.
I was not sure if the pressure in the hull would be enough on it's own to stop water.........sounds like a good move :)
regards
don
regards
don
UK

Sb_Maharana

As long WTC is safe; submarine is safe... let us see how things are coming up.

rcpilotacro

I remember VC telling me long ago , akula was redesigned by Vc , as akula II , correct me if I am wrong,

Ps
Just curious , not taking sides at all
Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can't get it wrong.

Sb_Maharana

Yes, you are right. VC always wanted to build a submarine, Akula. He discussed a lot over phone and mailed me some photographs and sketches related to Akula. He designed a sketch of Akula which was 36" x 3", and planned to make it with PVC pipe. I was not too convince with PVC pipe and that to 3" dia. I suggested him to go for 4" dia. Then he suggested me to start the build and WTC whatever way it is possible. Then I purchased a 72 MHz radio for the same purpose. Meanwhile he assigned me another work for which I couldn't start the build for a long time. When I was in Kolkata I saw a RC Hydroplane (Gas powered) and it created a lot of interest in me to make an Atlas hydro. Thereafter when Roopesh started building one I searched in net. for submarine and found this, Akula II, INS Chakra.

http://en.wikipedia.org/wiki/Akula_class_submarine

Closely matched what VC and I were discussing as well as it is INS Chakra. And then I started making this one.

rcpilotacro

For boats Vc and roopesh have been inspiration on this forum for many, not discounting you and sunk?
Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can't get it wrong.

Sb_Maharana

Also, Sreekant, Ghanshyam, Akash, Sukrut, Ved and Sanjay bhai are there.
Recently one more gentleman joined our forum .... Mr. Amit Bhisikar
some of his models.



Rooster

Hey Is Amit here on this forum. These are excellent build by him. The small boat has excellen control. Would need to know the controls of the same. Superb. {:)}

Good to know so many boat builders here.

Regards
Shreekant


Sb_Maharana

Previously I was thinking the Akula sub. have a 7 blade propeller, later I found it 6.
First I made the design with 40mm dia, but looked too small, then increased the dia to 45mm.  

Sb_Maharana

#21
Rudders & Dive planes ........

Sb_Maharana

First underwater test..

don't miss the end part of this video....

sunk?

hi mate.
looks good in the water.
what happened to the join?
that looked bad.
regards
don
regards
don
UK

Sb_Maharana

Don Sir,
I just forgot the joint nuts,,, :headscratch:
and last week I damaged the 7ch receiver for which I am limited to the basic functions with a spare 4 ch. rx.
Yet to balance it perfectly and you can see the gyrational force twisting the hull in opp. direction.