ryantimm92

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Nov 6, 2020
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Billings, Montana
Does anyone know how long it would take the rudder to swing out to hard over from a center position if the telemotor steering wheel was turned the speed you see in the film? Was the rudder response immediate? Did he have the steering wheel completely hard over before the rudder even started moving? How responsive was this rudder exactly?
 
Dec 27, 2017
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Isle of Man
Others more qualified will know for sure but I know you cannot 'spin' the wheel as some expect and is sometimes erroneously shown. Drag in the hydraulic system means that the wheel would need definite continuous pressure to keep moving over- i.e. hand to hand turning. The steering engines would lag very slightly behind the signals from the Bridge but would react to each movement rather than waiting for completion of the wheel movement. It would take several seconds to put the wheel hard over and several more before the rudder had completed the movement. How long exactly is probably hidden somewhere in one of the posts on this forum!
 

Mike Spooner

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Sep 21, 2017
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Does anyone know how long it would take the rudder to swing out to hard over from a center position if the telemotor steering wheel was turned the speed you see in the film? Was the rudder response immediate? Did he have the steering wheel completely hard over before the rudder even started moving? How responsive was this rudder exactly?
The simple answer is too long! As Fleet said in the inquiry: We could of seen it a bit sooner and well enough to get out of the way!
The rudder discussions has been well turned over for many years now. The rudder design wasn't that new in technology but a well tried and tested proven track record and adequate for the job of the day. As to day we use hydraulic systems some what more power and much quicker reaction time to. The best way to dodge icebergs in those days, was to slow down the ship speed!
 

Jim Currie

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Apr 16, 2008
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NewtonMearns, Glasgow, Scotland.
The steering wheel took about four turns left or right to apply full helm. An experienced helmsman would turn the wheel over hard left in four seconds snd hard left to right in about eight seconds. Add a couple of seconds for reaction time to the verbal order.
The steering engine would have taken close to 20 seconds to turn the tiller quadrant a total of 40 degrees one way although effective rudder angle was 35 degrees, Underway, at speed, it would have been brought back to midships in a much shorter time. For a really good idea I suggest you find member Cal Haines's post No.20 on

Steering gear​

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