How to control the sails on a ketch

Started by DuncanP
14 replies 49 likes Last activity: 3 years ago
#15

How to control the sails on a ketch

Good morning Duncan,
Carp braid is a nice fine line and is very free flowing, I have used this for rigging and have found that it doesn't stretch when under tension.
Cheers Colin.
Fair winds and calm waters,
COLIN.
Liked by AlessandroSPQR and flaxbybuck and
#13

How to control the sails on a ketch

Forse il colore è un pò troppo appariscente. Non so se è adatto al Bruma.
Se per te va bene il colore non c'è problema però.

Maybe the color is a little too flashy. I don't know if it's suitable for Bruma.
However, if the color is fine for you there is no problem.
Liked by DuncanP and Colin H
#12

How to control the sails on a ketch

A while ago I was given some line which was described to me as shark fishing line. Is that similar to carp fishing line that has been recommended? See photo with a 20p piece to give an idea of the thickness. Cheers D
Liked by Colin H
#11

How to control the sails on a ketch

Just a couple of thoughts re the winch. Jane you worked out the length of line ( sheet) you need to let out to move the sails in and out. This will depend on where they are attached to the booms. Closer to the mast less movement required but more force required to pull them in. How many turns does the winch do and and the drum diameter will determine if the movement that can be achieved. Does the winch drum have one channel on it. If so tensioning can only be achieved by a piece of elastic.pulling the line tight. If the drum has two channels the a closed loop system can be used. That is for example the top feeding line out while the bottom reels it in. Have a look at how the system on an R C laser works or an IOM. Nylet also do a booklet and diagram showing this. Are the winches digital if so check the current draw
as they pull significantly more current and your receiver might not be able to handle it.
Liked by Doogle
#10

How to control the sails on a ketch

Grazie roycv

Attenzione!
Un mio amico diceva: "io imparo dagli errori che voi commettete seguendo i miei consigli".
Ahahahahahah

sto scherzando. Io non faccio come quest'amico.

Thanks roycv

Attention!
A friend of mine said: "I learn from the mistakes you make by following my advice".
Ahahahahahahah

I am joking. I don't do like this friend.
Liked by Doogle and roycv
#9

How to control the sails on a ketch

Hi Duncan good advice from Italy! Good point about using braided fishing line as it does not tangle up, it just falls into a pile.

I forgot to mention before, give the top of the tubes that have the keel rods some extra support at their top. Just extra bracing sideways so that the keel does not take the leverage which could weaken the planking.

Regards
Roy
Liked by Doogle and DuncanP and
#7

How to control the sails on a ketch

Hi Duncan, you have probably got sufficient help now to be planning the job, but a couple of hints
1 keep it simple. In theory using two winches seems sensible but in practice one works sufficiently well and is simpler to install, set up, and control
2 keep it light. Two winches will add to the weight. On a small model like the Bruma this can make a real difference.
Have fun doing this and I wish you good luck. 😉
Liked by Doogle and Colin H and
#6

How to control the sails on a ketch

Ciao Duncan
I consigli che hai avuto da "roycv", "luckyduck" e "Trident73", contengono informazioni molto utili. Queste informazioni saranno utili anche per me in futuro.
In merito ai buchi sul deck e ai tubi in cui far passare le scotte, io ti consiglio di stabilire già il tipo e lo spessore della string che vuoi usare.
Io sceglierei una string dello stesso colore e dello stesso spessore di quelle già presenti sul modello. Quindi molto fina (poco diametro).
In questo modo non dovrai fare buchi molto grandi sul ponte.
Io ho usato il cordino usato per la pesca, multitreccia da carpfishing.

Spero che tu metta molte foto sul forum, perchè sono molto curioso della soluzione che sceglierai.

Hallo Duncan
The advice you got from "roycv", "luckyduck" and "Trident73", contains very useful information. This information will also be useful for me in the future.
Regarding the holes on the deck and the tubes through which the sheets pass, I advise you to already establish the type and thickness of the string you want to use.
I would choose a string of the same color and thickness as those already present on the model. Therefore very thin (small diameter).
This way you won't have to make very large holes in the deck.
I used the line used for fishing, multi-braid for carp fishing.

I hope you post a lot of photos on the forum, because I'm very curious about the solution you will choose.
Liked by Doogle and Colin H and
#5

How to control the sails on a ketch

Hi Duncan, you can control all 3 sails from the one winch.
I run my string around the boat inside plastic tubes. They can be bent to shape using hot water.
Exits from deck for the sheets go easily in the ferules included with servos. You might use plastic tubes that are a good fit to the end of the ferules.
You should be able to have a single cord in the winch and then connect it to the 2 main sails.

The jib string goes to the other part of the winch.
All the sails should go in and out in parallel.
To enable this I fit a bowsie for the jib perhaps below deck to adjust the angles.

Keep the photos coming, I am working on another build at the moment but next one will be Bruma.
regards
Roy
Liked by Colin H and DuncanP and
#4

How to control the sails on a ketch

A couple of points to help:
1 - I have just used small brass ferrules through the deck for the sheets. These are then fed through home made wooden blocks, to look right for my model with the right lining up on the sail to ensure the sail pulls evenly on the foot and the leach for the foresails. Not a problem with the boom.
2. The other point that causes a lot of issues is ensuring that the sheet is kept fairly tight if you are using a drum winch. Otherwise the sheet will not feed onto the drum correctly, and will get jammed. The easiet way to overcome this is using some fine elastic and the Joysway instructions should give you a good lead here. For my model though I have, like you wanted to keep the deck clean and tidy, so my elastic tensioner is fitted under the deck.
Liked by RodC and DuncanP and
#3

How to control the sails on a ketch

Salve DuncanP.
Complimenti, ottima idea. Il tuo obiettivo è interessantissimo, sono curiosi di vedere gli sviluppi.

Io ho usato un metodo diverso da quello che normalmente usano gli altri modellisti.
Non so se è bene consigliarti il mio metodo, perchè io sono autodidatta.
Inoltre, io avevo necessità di non far vedere troppo le scotte sul ponte; infatti il mio sistema passa sotto il deck.
Con il passare del tempo, ho visto molti video e blog che mi sembravano molto validi e ingegnosi, ma ormai avevo intrapreso il mio sistema.
Su youtube c'è un signore che ha fatto molti video tutorial su questo argomento, si chiama "sailtails". Secondo me è in gamba.
Io non ho seguito i suoi metodi perchè li ho visti dopo il mio progetto, ma secondo me sono molto efficienti.
Un altro sistema che puoi facilmente trovare sul web è quello della Robbe Valdivia, ma è un pò complicato sebbene ingegnoso.

Per quanto riguarda i verricelli, se vuoi controllare due verricelli con lo stesso canale puoi farlo.
Io controllo due verricelli con lo stesso stick del radiocomando (quindi con un solo canale).
I miei due verricelli, controllano uno una randa e i fiocchi e l'altro l'altra randa. Avrei potuto dedicare un canale per ogni verricello ma anche io ho preferito fare come te: cioè un canale per entrambi i verricelli.
Per fare questo, basta che colleghi in parallello i cavetti dei verricelli.
Se hai bisogno di più informazioni dimmmelo.
Buon divertimento.


Hi DuncanP.
Congrats, great idea. Your goal is very interesting, I'm curious to see the developments.

I used a different method from what other modelers normally use.
I don't know if it's good to recommend my method to you, because I'm self-taught.
Furthermore, I needed not to show the sheets too much on the deck; in fact my system passes under the deck.
As time went on, I saw many videos and blogs that seemed very good and ingenious, but by then I had embarked on my own system.
On YouTube there is a gentleman who has made many video tutorials on this topic, his name is "sailtails". In my opinion he is smart.
I didn't follow his methods because I saw them after my project, but in my opinion they are very efficient.
Another system that you can easily find on the web is that of Robbe Valdivia, but it is a little complicated although ingenious.

As for winches, if you want to control two winches with the same channel you can do it.
I control two winches with the same remote control stick (therefore with a single channel).
My two winches, one controls a mainsail and jibs and the other controls the other mainsail. I could have dedicated a channel for each winch but I also preferred to do like you: that is, a channel for both winches.
To do this, simply connect the winch cables in parallel.
If you need more information tell me.
Good fun.
Liked by RodC and DuncanP and
#2

How to control the sails on a ketch

Hi, I think that there are a few questions that you pose there and there are equally probably lots of good ways of setting up your winch to control the three sheets (lines) to your sails. Some setup diagrams in the site I am linking below may assist you (it is aimed at racing yachts but I am sure you can get the basic principles from it). Also if you google for the manual for the Joysway dragonforce 65 yacht I am sure you can use the images and instructions in there to get the basic idea behind sail control and modify things to suit your needs. For the sheet (sail control ropes) outlets you can use simple brass tube through the deck if you bend it round in a smooth curve so that one end points at the winch (under thedeck) and the other provides the outlet above deck to point in the general direction of the fixing points on the booms/sails. Have done a rough sketch ✍️ f something which could work… Good luck.

https://www.onemetre.net//Build/Drums/Drums.htm
Liked by BarryS and RodC and
#1

How to control the sails on a ketch

I'm working on modifying the motor sailor Mantua Bruma to also carry sails. Before I start the planking and fitting the deck I would like some help and advice on how to control the sails. I've bought a winch motor but I would like some ideas on how to attach the control lines to the sails. I would like to know the best way to get the lines from inside the hull out to the sails and also how to create the necessary rope outlets in the deck. Also will one servo control the 3 sails? If I need another winch can it be controlled from the same channel? The photo is one I obtained off the internet and is the same model as I'm building. Thanks in advance.
Liked by Doogle and AndyN and

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