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S&S Swan General - Swan 411 emergency tiller
15 February 2021 - 18:29
#1
Join Date: 20 July 2020
Posts: 9

Swan 411 emergency tiller

Would anyone have a picture how the Swan 411 emergency tiller setup looks like?

Both the extension of the rudder axel and the tiller itself. Even better if one would happen to have exact measurements and/or drawings.

16 February 2021 - 06:38
#2
Join Date: 02 January 2008
Posts: 1470

Dear Tapio

Pls look at the Steering System Drawing in the drawing collection for the yacht type.
Kind regards
Lars

16 February 2021 - 09:53
#3
Join Date: 20 July 2020
Posts: 9

Hello Lars,

 

I found the one (https://www.classicswan.org/upload/drawings_swan/2016_12_21_20_25_44-411_SteeringSystem.jpg), but it is rather blurry and I have hard time to figure out how the mechanism looks like under the aluminium "cap" that will be un-screwed when the tiller is inserted.

16 February 2021 - 13:17
#4
Join Date: 02 January 2008
Posts: 1470

Tapio

Yes, this is the drawing I had in mind.
The emergency tiller consists of two parts - the vertical tube that is inserted through the coaming, needs to have a square portion at the lower end - and the extension which is just a piece of round tube.
The coaming opening probably has a plastic bearing bushing.
Kind regards
Lars

16 February 2021 - 13:42
#5
Join Date: 20 July 2020
Posts: 9

Thank you for the info, this assures that my plan was roughly right.

I had sketched a rod that has 39x39mm square fitting on the bottom (the top end of the rudder axle is 38x38mm with bit rounded corners), and the vertical rod itself would be 40mm diameter stainless steel, total length around 740-800mm. On the top end it would have a plastic bushing to fit to the coaming.

I estimated that the weight of the thing, if being solid, would be around 7.5kg plus the horizontal tube.

Is it an overkill to make this thing solid? Should I just get a stainless steel pipe instead and cut down the weight and make whole manufacturing easier? (I don't have a clue how much stainless steel pipe 40x2mm length 700mm handles torgue)

 

 

16 February 2021 - 17:43
#6
Join Date: 02 January 2008
Posts: 1470

Tapio

The square portion at the upper end of the rudder stock is its weakest part in torsion, and the recommendation is to choose the vertical tube dimensions so it has equal torsion strength. If AISI 316 steel is used, 56 x 3 mm would be suitable.
Kind regards
Lars

18 February 2021 - 20:15
#7
Join Date: 27 January 2011
Posts: 126

A photo - the tiller is as Lars describes, robust where it connects to the rudder stock, the rest hollow tubes. Unfortunately I do not have a photo of the entire tiller.

Kind regards,

Christian 411/028

03 March 2021 - 02:14
#8
Join Date: 07 October 2014
Posts: 68

Hi chriss, i can measure the emergency tiller for you. Angels and lenghts plus diameter.

Will do tomorrow.

Stefan

03 March 2021 - 20:53
#9
Join Date: 07 October 2014
Posts: 68

so, was reading more carefully, her it comes tapio :-)

wall thiknes is about 1mm and the agle is 105 degree

if you missing some measurements, just come back

stefan

03 March 2021 - 21:00
#10
Join Date: 07 October 2014
Posts: 68

03 March 2021 - 21:02
#11
Join Date: 07 October 2014
Posts: 68

04 March 2021 - 08:22
#12
Join Date: 20 July 2020
Posts: 9

Awesome pictures, this makes it easy for me to build a new one, thank you a lot.

 

Do you know what is the purpose of the wire and the thing that is attached to it?

04 March 2021 - 14:03
#13
Join Date: 07 October 2014
Posts: 68

hello tapio,

yes, this is the tool / key to open the cap where the tiller going into the boat.

so in emergency you can not loose or miss the key

ps, wall size can be may a bit bigger, there is a ridge on my tiller and i could not measure this well.

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