HI
Just had a better look at the pics. On your model I can see a small servo amidships with a wooden extension arm. This will not work as a servo for the sails. You will nee a much larger and more powerful servo (Hitek do one for about £20). if you are set on using an arm then this will need to be of a suitable material I suggest metal for max strength attached by bolts to the servo arm. The battery is possibly a bit big and NiMh would work just as well and help with keeping the weight low in the hull. I assume you have placed the lead ballast in the keel.

hi
Looks like you have progressed well. I see you are located in the Midlands. I suggest you find a local club where you will find a wealth of experience to help you complete the model. There are a list of clubs on this site so you are possibly quite near to one.
The diagrams seem to show the sheet runs but it's difficult to place where exactly on the model the diagram fits.
At this size I would certainly recommend a drum winch as an arm servo will struggle to pull in the sheets in a blow.
How many channels are available on your radio?

thanks for the replies as I said this is new to me as I am retired and need something to occupy my mind. the sizes are L 42" beam 14 1/4" D 10". There are some details I have copied from a french builder I found searching the net ( hope he does'nt mind) I have tried to include photo's
Thanks

HI terijay
How you choose to control your sails is down to personal choice plus you have already committed two controls, one for the rudder and one for the motor. if you have a four channel transmitter receiver this leaves two spare controls.
I have tried multiple sail control on my Cariad but found little benefit and a great deal of concentration when sailing.
Your model carries a fair amount of sail and whilst a sail lever system may cope a more effective solution would be a closed loop drum winch with the sails connected to the loop. This system has little chance of failure and provides plenty of pull to the sails even in a strong blow. I mount my winch servo on a board and run the cord from one drum round a pulley at one end of the board then to another pulley at the other end and back to the other drum. I find a piece of plastic electrical casing running between the pulleys acts as a good guide for a slider for attaching the sheet lines. Depending on the take off point you may need a return loop to keep both sails working the same way. You will only need about 6" of travel to allow your sails to extend to 45 deg.
The other benefit is that you have only one sail control. I usually leave my fore sails to find their own position, using a rod or rope across the deck with the sail connected by a sliding loop and bowsie for adjustment.
Good luck and please post details of your progress 😀

HI Terijay

Need some pictures, also what does the designer say about sail movement? is it 3 dial halliards to 1 winch etc, also the size of the hull.

Lot of sail men on here who will take up the thread.

Hope this will start the tread and get you a lot more help and advice

Regards

Mark