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1
Don.
Hydraulic operation of the hydroplanes ,and rudders, were the most common systems for submarines in my time, and I remember coming back from my submarine education in UK and onboard a VIIc, the most stricking exstensive differerence was the use of electric driven hydroplanes and rudders. You are right in your assumption both hydroplanes and rudders were electrically operated on the VIICs.
2
Hello Mr. Tore,


I think definitely electric motors...  I was wondering if they had stall motors when the planes reached their limit - I found out there were 'Limit Switches" for all three planes and rudders.  I have attached the translated drawing...


Regards,
Don_
3
Hello Mr. Tore,


After doing a little more research...  It looks like David Westdood's book "Anatomy Of The Ship - The Type VII U-Boat" the forward and aft hydroplane drive motors are a hydraulic type motor.  I could see this type of motor because the hydroplane arm comes up against a metal stopper. Therefore, I would assume that the dual rudder motor is also an hydraulic motor as well...


However, there is nothing in the German Plans 1 thru 34 to indicate electric or hydraulic motors driving/controlling the hydroplanes or the dual rudders.


I checked the electrical plans for the Type VII and Plan 10 shows electric motors.


Could David Westwood's book be wrong?


What do you think?


Regards,
Don_
4
Hello Mr. Tore and all,


I updated pages 194 - 198 and uploaded Skizzenbuch 11 x 17 - M + I.PDF into my Dropbox folder...


Regards,
Don_
5
Don.
Again excellent images, the hydroplanes are fixed by a nut, not bolt. I remember once being submerged the fwd. hydroplane operator had trouble operating his hydroplane which according to him did not respond and the hydroplane seemed to be locked in a down position. When I crawled in to the narrow space i discovered that the mechanical connection from the motordrive to the transmitter for the resistive network was broken and the electric indicator in the controlroom showed full up whereas the plane was full down. Otherwise your images shows one of the drawbacks of mechanical operations, the numerous greasing points required.
Tore
6
Hello Mr. Tore,


Here is my 2nd attempt at the drawing...  What do you think? Also I found a photo that shows a hydroplane removed...


Regards,
Don_
7
Don
Exellent images. I guess it shows the arrangement of the old VIICs The latest executions did not have the atwartship shaft going right to the hydroplanguard and the shaft ended in a nut fixing halfway on the plane having an accesshatch right on the top where the nut was situated. As far as I remember the void space of the plane was filled with some sort of epoxy or recine. There was no contact between the hydroplane and the guard.
Tore
8
Hello Mr. Tore,


I have been reviewing the bow hydroplane clutch and drive mechanism; How does this drawing look to you?


Regards,
Don_
9
Rip Maciek      :'( :'( :'( :'( :'(
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Hello all. Just came back from my vacation and learned this terrible news :(   

I sitting here shocked, i had a few conversation bits with him and he was clearly a fantastic person. I have spent countless of hours on his websites and reading his input on this forum.
A really valuable, friendly and open community member.

R.I.P Maciek.
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