Siadwell

Siadwell

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  • #57604
    Ralph Pinch
    Participant
      @ralphpinch41762

      Have done the concept drawing of my build to use as a guide,frame2.jpg sorry Paul only have Microsoft paint to use which does not do your design justice.

      #7006
      Ralph Pinch
      Participant
        @ralphpinch41762

        adaptation of Paul T’s VGC.

        #57606
        ashley needham
        Participant
          @ashleyneedham69188

          Ralph. I use a system called "turbo pencil and paper" for my designs.

          Paint is only something I apply after the build!

          Ashley

          #57608
          Ralph Pinch
          Participant
            @ralphpinch41762

            Hi Ashley, very droll lol,

            I have Autosketch on an old PC but as usual cannot find the disk, never heard of turbo P&P but for my skill set paint is about right.

            Ralph.

            #57609
            Ralph Pinch
            Participant
              @ralphpinch41762

              20150505_124459.jpgAs my bike building days are over, I have chopped down my assembly bench to a more realistic size, have made a rail system to mount the hull frames on which is fully adjustable with 2 axis mounting lugs for lateral adjustment.

              #57610
              Bob Abell 2
              Participant
                @bobabell2

                Hello Ralph

                I like your proposal drawing…….Where does the name…..Siadwell…..Come from?……..Is it Welsh?

                Make sure the cabin is not too wide….As there isn't much room for the handrails?

                Are you making the five footer?

                All the best with the build

                Bob

                #57611
                Ralph Pinch
                Participant
                  @ralphpinch41762

                  20150505_124553.jpgHi Bob,

                  Yes Siadwell is a Welsh name pronounced Shadwell, Rhian my daughter is very lucky, had she been a boy she would have been called Siadwell lol.

                  Yes its going to be 5ft, following Paul T's plans but with slight modifications, the forecastle will be longer.

                  Got the idea for the fabrication rail from your posts, just used metal instead of wood, so can be adjusted for various keel sizes.

                  Lugs are 2 axis for adjustment.

                  Ralph.

                  #57612
                  Ralph Pinch
                  Participant
                    @ralphpinch41762

                    Well Bob,

                    Wish I had read some more of your post's, seen now that you use "join the dots up" system, did I? NO! I cut the paper templates right to the line!!! can you draw around a paper template without it moving? well I can't……..I am having to stick the templates to 3ply first…………..good job I can wallpaper.20150505_144933.jpg

                    #57614
                    Bob Abell 2
                    Participant
                      @bobabell2

                      Hello Ralph

                      You had better read some more……..The breast Hook was replaced with three strips of ply!

                      Saves weight too

                      Bob

                      string 1.jpg

                      #57615
                      Ralph Pinch
                      Participant
                        @ralphpinch41762

                        Err yes I see now, good job your on the ball Bob.

                        #57616
                        Paul T
                        Participant
                          @pault84577

                          Bob

                          That's not strictly correct as the use of bendy stringers was only an option, the working drawings show solid horizontal sections (breasthooks) in the first three compartments as shown below.

                          vgc bow.jpg

                          The horizontal breasthooks provide extra strength and stability to the front of the boat and maintain the correct shape of the hull in this critical area.

                          Ralph

                          I also fix the templates down onto the wood but instead of using glue I use masking tape to fix the edges of the templates, I then highlight the template outlines with pen.

                          The masking tape keeps the wood clean and helps prevent splintering during the cutting process (and there is no nasty glue to remove)

                          I like the shape of your version it reminds me of BlueBird of Chelsea

                          Paul

                          #57617
                          Ralph Pinch
                          Participant
                            @ralphpinch41762

                            Hi Paul, thanks for the information, had never seen the Bluebird of Chelsea, in fact I had never seen any of these boats until I joined this forum, what a lovely craft she is, looking at a picture of her the forecastle? front deck? finishes past midships giving her a look undisguised power, now you really have set the cat amongst the pigeons, everything has come to a grinding stop, Bluebird is just another variation of the same basic design, am I right that frames 4 & 5 would have to be altered to the same height as frame 3 to lengthen the deck? have always like to create my own take on things thus the alteration to the superstructure on Siadwell, now do I go further and do my own take on Bluebird of Chelsea? will play about with my concept drawing and post tomorrow

                            thanks I think! Ralph

                            #57623
                            Paul T
                            Participant
                              @pault84577

                              Hello Ralph

                              Frames 4 & 5 would have to be lengthened and there will be a little judicious cutting to allow for extending the stringers.

                              Fairly straight forward but be careful not to change the hull profile.

                              Paul

                              #57624
                              Ralph Pinch
                              Participant
                                @ralphpinch41762

                                Had a good think overnight, I'm still a novice a modeling so now is not the time to try and run before I can walk, forget Bluebird for now and carry on with the Siadwell build.

                                Had a dry run with the jig I have made, it works well even with 3ply templates 20150506_163049.jpgno lateral movement at all.

                                #57625
                                Ralph Pinch
                                Participant
                                  @ralphpinch41762

                                  Sorry Paul, did not see your post before submitting mine, thinking I might be calling on skills I haven't got yet, case of steady as she goes, I will need to alter the rear frames to curve the back more, what frame would you suggest starting on?

                                  #57626
                                  Paul T
                                  Participant
                                    @pault84577

                                    Hi Ralph

                                    The easiest way to achieve the curved transom is to gently shape from F7 in a way that doesn't affect or encroach into the cabin superstructure (less things to change)

                                    I would the extra step and curve the transom on the other plane i.e. curved looking down from above.

                                    Just ask if you need any help as I am happy to draw up the alterations.

                                    Paul

                                    #57627
                                    Bob Abell 2
                                    Participant
                                      @bobabell2

                                      Ralph

                                      A fine start, but you need to have a datum base for the bottom edge of the formers

                                      They look a bit wobbly to me?

                                      Bob

                                      #57629
                                      Ralph Pinch
                                      Participant
                                        @ralphpinch41762

                                        Thanks Paul, will use a French curve thru 7 to 9 probs 2 deg at a time, as you say a gentle curve, so you think don't move the internal wall of the former in correspondingly, the transom will be slightly curved as you suggest, the drawing does not highlight this, will give you a shout if I hit problems.

                                        Hi bob, surprisingly the formers are quite rigid, have used a height guage to set the formers equal each side, they are all within a knats whisker of each other lol or have I got your term datum base wrong? probs have lol. the angle of the photo dosn't help I agree.

                                        #57631
                                        Paul T
                                        Participant
                                          @pault84577

                                          Hi Ralph

                                          Your curve sounds just right and should look great.yes

                                          Paul

                                          #57645
                                          Bob Abell 2
                                          Participant
                                            @bobabell2

                                            Ralph……..You need to support the bottom edges very securely

                                            As the build progresses, heavy forces are required to withstand the bending of the 3mm skinning around the Bow area

                                            Any progress pictures to show us. please?

                                            Bob

                                            #57647
                                            Ralph Pinch
                                            Participant
                                              @ralphpinch41762

                                              Hi Bob, thank you now I understand, I will now make supporting lengths down both sides, I can bolt them to the bench easily,

                                              Still cutting out the formers out of 9mm, getting a band saw as you suggested makes things much easier, when all are cut I will post some pictures as I assemble them onto the jig.

                                              Will be better when I finish working in a couple of years, lots more time to play about in the garage.

                                              Ralph.

                                              #57668
                                              Ralph Pinch
                                              Participant
                                                @ralphpinch41762

                                                All formers now made, mounted temp into position to check alignment, just needs a little fettling around the stern, down to the wood yard tomorrow to get some stock lengths to make stretchers and edge supports.20150510_160148.jpg

                                                #57670
                                                Bob Abell 2
                                                Participant
                                                  @bobabell2

                                                  WOW!…..Ralph……You`re doing well!

                                                  Hope you are enjoying the build?

                                                  Are you going the Breasthook route or the laminated stringer route?

                                                  Did you use a Bandsaw for the formers?……They look very nicely cut

                                                  Keep up the good work!

                                                  Bob

                                                  #57686
                                                  Ralph Pinch
                                                  Participant
                                                    @ralphpinch41762

                                                    Morning Bob, yes the build is very enjoyable, will go the laminated stringer route, the bandsaw was used to cut the formers and to nibble away the stringer inserts, my scroll saw was up to the job of the internals, all with the same blade, just took it easy and let the machine do the work with minimal force.

                                                    little bit of fettling is required here and there to stop any twisting action when I fit the stringers.

                                                    the stern needs a little rework where I have deviated from Pauls plan, nothing major…….just adjustments.

                                                    Now I'm undecided, do I go for panels or planks for the hull ?

                                                    #57687
                                                    Bob Abell 2
                                                    Participant
                                                      @bobabell2

                                                      Hello Ralph

                                                      I`m getting the impression that you may be an Engineer?

                                                      It`s nice to see a build where the method being used is based on squareness and accuracy

                                                      You are now at a very important make or break stage!……..Getting the stringers to lie true in all directions

                                                      I also thought about planking the entire hull, but with a skin thickness of only 3mm…….I thought better of it

                                                      The bows are definitely a planking job and is a tricky and important area……..Suggest you copy my method, if this is your first POF attempt

                                                      Hope you don`t mind going a bit OTT with advice?

                                                      All the best…….Bob

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