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« on: August 07, 2011, 07:35:09 PM »
Sb_Maharana
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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.

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RC Submarine Akula-II
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« Reply #1 on: August 07, 2011, 08:06:46 PM »
ujjwaana
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Wow!! This has a league of its own!! What is the material ? how did you mold it ? Its amazing.
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« Reply #2 on: August 07, 2011, 08:17:21 PM »
Sb_Maharana
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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.
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« Reply #3 on: August 07, 2011, 09:55:23 PM »
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hi mate.
hull moulds look good.  Smiley
how is the build coming along?
regards
don
 
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regards
don
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« Reply #4 on: August 07, 2011, 10:05:33 PM »
roopeshkrishna
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HYDRO PLANER.....



Maharana..its an excellent work...please share us the steps as it progress.. Thumbs Up Salute
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« Reply #5 on: August 11, 2011, 04:19:03 AM »
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hi mate.
how's the progress?
   regards
don
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« Reply #6 on: August 11, 2011, 01:06:34 PM »
Sb_Maharana
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@ 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.

sub-4.jpg
Re: RC Submarine Akula-II
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« Reply #7 on: August 11, 2011, 01:32:55 PM »
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hi mate.
looking good........Smiley
regards
don
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regards
don
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« Reply #8 on: August 12, 2011, 10:00:45 PM »
Sb_Maharana
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Just completed the Motor mount today; planing to complete majority of the work in next three days (holidays).

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Re: RC Submarine Akula-II
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« Reply #9 on: August 13, 2011, 02:07:40 AM »
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hi mate,
excellent work there.......... good cooling too Smiley
regards
don
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regards
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« Reply #10 on: August 13, 2011, 03:11:21 PM »
Sb_Maharana
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Yes Sir,
Cooling / heat sink is must inside WTC,
machined the water seal tube + driving shaft with 5 x 10 x 4 mm bearing.

sub-7.jpg
Re: RC Submarine Akula-II
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« Reply #11 on: August 13, 2011, 03:25:06 PM »
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hi mate.
this coming on nicely......... Smiley
 will you use 'rubber' seal outside the bearing? or will the bearing be enough to keep water out at that depth?
regards
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« Reply #12 on: August 13, 2011, 03:29:11 PM »
Sb_Maharana
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Yes will fix a rubber seal and a collar if required.  
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« Reply #13 on: August 13, 2011, 05:35:16 PM »
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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 Smiley
regards
don
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regards
don
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« Reply #14 on: August 13, 2011, 06:07:09 PM »
Sb_Maharana
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As long WTC is safe; submarine is safe... let us see how things are coming up.
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« Reply #15 on: August 14, 2011, 08:18:01 PM »
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I remember VC telling me long ago , akula was redesigned by Vc , as akula II , correct me if I am wrong,

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Just curious , not taking sides at all
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« Reply #16 on: August 14, 2011, 09:07:10 PM »
Sb_Maharana
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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.
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« Reply #17 on: August 15, 2011, 06:34:21 AM »
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For boats Vc and roopesh have been inspiration on this forum for many, not discounting you and sunk?
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« Reply #18 on: August 15, 2011, 09:22:27 AM »
Sb_Maharana
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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.


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« Reply #19 on: August 16, 2011, 10:41:06 AM »
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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. Clap

Good to know so many boat builders here.

Regards
Shreekant

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« Reply #20 on: August 21, 2011, 03:15:32 PM »
Sb_Maharana
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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.  

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Re: RC Submarine Akula-II
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« Reply #21 on: August 24, 2011, 10:17:16 PM »
Sb_Maharana
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Rudders & Dive planes ........

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Re: RC Submarine Akula-II
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« Reply #22 on: September 10, 2011, 06:39:08 PM »
Sb_Maharana
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First underwater test..

don't miss the end part of this video....
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« Reply #23 on: September 10, 2011, 07:01:49 PM »
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hi mate.
looks good in the water.
what happened to the join?
that looked bad.
regards
don
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don
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« Reply #24 on: September 10, 2011, 11:37:48 PM »
Sb_Maharana
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Don Sir,
I just forgot the joint nuts,,, Head Scratching
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.
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