Author Topic: VIIC/41 - Schematices drawing  (Read 512061 times)

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Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1470 on: 07 Jan , 2017, 16:12 »
Colour X-ray


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Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1471 on: 10 Jan , 2017, 18:48 »
Hi Dougie

I just found another modification for the late Type VIIC’s.

For the last few days I been working on the drive shaft for the radar. When I finish modelling the drive shaft, I combined it with my bridge model from last summer. I noticed straight away the casting around the drive shaft for the radar was too small, about 50 mm of the drive shaft was poking through the casting. This meant I had to redo this small section the casting.

I decided if I had to redo the casting around the drive shaft, I would add more detail, so I rechecked my photos. Then I noticed two different styles of casting around the drive shaft for the radar. The standard style (Figure 1) and the newer more simpler casting (Figure 2). This is typical U-boat evolution by simplifying the design. This newer simpler casting is found on U-400 (Launched, Jan 1944), U-826, U-1056 and U-1305, also on two unnamed boats.

I also noticed that all the boats were from different boatyards, this would properly indicate that there was a set of plans drawn up for these modifications.


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« Last Edit: 11 Jan , 2017, 12:17 by NZSnowman »

Offline dougie47

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Re: VIIC/41 - Schematices drawing
« Reply #1472 on: 11 Jan , 2017, 14:26 »
Hi Simon,

You are absolutely right. The more rectangular arrangement (as per your Figure 2) is the one used in the Revell VIIC/41 kits. I see it on U 953 and U 825 as well.

Can I ask what size you went for with your tower railings? When Jon and I visited the U 534 last year we measured the original railings on the tower as follows -
Top horizontal 40mm diameter
Middle horizontal 30mm diameter
Lower horizontal 22mm diameter
Verticals 40mm diameter

Hope these might help with your drawings.

Lastly, do you know the A-shaped bracket at the bottom of the twin rudders on VIICs? This lay mostly horizontally and was in the shape of the letter A. It was secured to the bottom of both rudders and then onto the bottom of the main support block. I've noticed that it was removed from the late IXs and also think it was probably removed from VIICs too (perhaps in 43 or 44 or so). It is not there on U 995. Have you got it on your drawing?

Cheers,

Dougie

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1473 on: 11 Jan , 2017, 15:52 »
Hi Simon,

You are absolutely right. The more rectangular arrangement (as per your Figure 2) is the one used in the Revell VIIC/41 kits. I see it on U 953 and U 825 as well.

Can I ask what size you went for with your tower railings? When Jon and I visited the U 534 last year we measured the original railings on the tower as follows -
Top horizontal 40mm diameter
Middle horizontal 30mm diameter
Lower horizontal 22mm diameter
Verticals 40mm diameter

Hope these might help with your drawings.

Lastly, do you know the A-shaped bracket at the bottom of the twin rudders on VIICs? This lay mostly horizontally and was in the shape of the letter A. It was secured to the bottom of both rudders and then onto the bottom of the main support block. I've noticed that it was removed from the late IXs and also think it was probably removed from VIICs too (perhaps in 43 or 44 or so). It is not there on U 995. Have you got it on your drawing?

Cheers,

Dougie

I went for 35 mm/ 25 mm / 20 mm & 35 mm.

Not yet. I do remember someone saying that they removed the A-shaped bracket on late war Type VIIC's.


Offline dougie47

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Re: VIIC/41 - Schematices drawing
« Reply #1474 on: 12 Jan , 2017, 13:34 »
Hi Simon,

There might be a difference between the railing sizes on U 534 and the VIICs. On 534 the top horizontal bar is the same diameter as the verticals. But on the Turm IV VIICs and VIIC/41s the top horizontal bar is noticeably thicker than the middle horizontal bars and all the verticals.

On the Turm 0 VIICs the top horizontal bar is also noticeably thicker than the rest. But there was one exception - one of the verticals was thicker than the rest and perhaps the same diameter as the top horizontal bar.

Cheers,

Dougie
 

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1475 on: 16 Jan , 2017, 19:05 »
Starting to make U-1308 seaworthy before winter.

Pressure hull valve for sea connection for flooding torpedo compensating tanks 2 and 3


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Offline SnakeDoc

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Re: VIIC/41 - Schematices drawing
« Reply #1476 on: 17 Jan , 2017, 03:00 »
Hi Simon,


great work!


--
Regards
Maciek

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1477 on: 07 Feb , 2017, 12:17 »
Vent valve for main ballast and reserve fuel oil tanks 2 and 4.


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If anyone is using my drawings/ imaging’s as reference material, please be aware that the Vent valve for the main ballast and reserve fuel oil tanks 2 and 4 is incorrectly position. It should be positioned 600 mm further toward the bow. I will fixs this and post updated imaging at a later stage.

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1478 on: 09 Feb , 2017, 00:18 »
Each day U-1308 get closer to launch ;D


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Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1479 on: 11 Feb , 2017, 13:45 »
Vent valve for main ballast and reserve fuel oil tanks 2 and 4.


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If anyone is using my drawings/ imaging’s as reference material, please be aware that the Vent valve for the main ballast and reserve fuel oil tanks 2 and 4 is incorrectly position. It should be positioned 600 mm further toward the bow. I will fixs this and post updated imaging at a later stage.

I solve how I had incorrectly position Vent valve for the main ballast and reserve fuel oil tanks 2 and 4. This information is incorrect on the original German document. http://www.uboatarchive.net/U-570/U-570Plate28.htm.

Don, Tore & Maciek, if you guys, have some free time could you please double check is for me.

On the original German document, it said http://www.uboatarchive.net/U-570/U-570Plate28.htm
  • Vent Valve for MB 3 – Frame 40 to 41.
  • Vent Valve for MB & RFO Tanks – Frame 41 to 42.


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http://www.kubische-panoramen.de/index.php?id_id=5378&p=i

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1480 on: 11 Feb , 2017, 19:23 »
I add one new system like the vent for the MB3 Tank (Yellow) but now the Ventilation System piping (Blue) will not fit :(

Look like I know what I doing tomorrow, realignment the ventilation piping ;D


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Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1481 on: 14 Feb , 2017, 16:01 »
Added the starborad vent valve for the Main Ballast and Reserve Fuel Oil Tank 2 (MB & RFO) & updated the vent valve for the MB & RFO tanks 2 and 4 (pink).  Vent for the MB3 Tank (Yellow) & Saddle Tank Framing (Green).


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« Last Edit: 14 Feb , 2017, 16:03 by NZSnowman »

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1482 on: 28 Apr , 2017, 13:57 »
Again, another building season is completed on U-1308. It has been a busy 7 months, with almost all the piping completed behind the conning tower/ above deck. There have been the usual problems, the biggest this year happen when the venting pipes for MB and RTO Tanks 2 and 4 were added. This affected all the alignments of the other pipes and the deckworks were forced to redo all the pipes again.
 
The most significant detail added this years was the exhaust hull valve. The foreman has been researching this for about five years now and it's gone through several revolutions to make it more accurate. The foreman is now very pleased with the latest version and feel externally it’s around 90% accurate to the original German designed. A highlight for the foreman this year was added the accurate internal framing of the saddle tanks, it something he been wanting to do for several years. Next year he wants to start adding all the vents, valves and piping within the saddle tanks.
 
The dockworker will be taking a rest for the next few months as the foreman has a new job, is moving to a new house and must organise his Ph.D. studies. He will try to visit as much as he can, but it could be quite limited for the next few months.

Wish you all a great summer/ winter, Simon.
« Last Edit: 28 Apr , 2017, 23:56 by NZSnowman »

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1483 on: 28 Apr , 2017, 14:01 »

Fig. 1. The new venting pipes for MB and RTO Tanks 2 and 4 (pink).
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« Last Edit: 28 Apr , 2017, 23:57 by NZSnowman »

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1484 on: 28 Apr , 2017, 14:08 »

Fig. 2. The start of the new blowing exhaust manifold (Orange).
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