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    Another cheap and simple Charlie Class

    John Wrennall
    AMS member

    Posts : 157
    Join date : 2011-11-16
    Age : 71
    Location : Leyland

    Another cheap and simple Charlie Class

    Post  John Wrennall on Sun Oct 04, 2015 9:32 pm

    Hi All

    After having to reposition all my boats and ending up with an aching back, I decided the next one would by small, light and a dynamic diver to reduce maintenance. What follows are the photos taken during the build and I hope that the old adage "a picture is worth 1000 words" holds good. They are not shown in any particular order but are just to show some specific feature of the build.

    Rudders/planes cut from 3mm sheet plastic.

    Fitted with shaft and Glued together.

    Rudder linkage(hydroplanes similar) - note magnetic coupling.

    Rear hull cone with all holes drilled.

    Control pivot bearings and supports to be glued in.

    Inside rear cone with controls fitted.

    rear of rear cone has a short piece of tubing fitted to support the propshaft which SLIDES through

    Main Hull 65mm OD, 320mm long.

    Hollow free-flooding sail, made from several layers of 3mm plastic.

    Interior of front cone. Note screw to adjust angle of hydroplanes.

    Rear bulkhead during construction. Propshaft and oiler glued in.
    Radial tapped holes to retain rear cone, Axial tapped holes for securing through-bolts
    2 large axial holes for pushrods.

    Inboard side of rear bulkhead showing motor coupling.

    Motor on its own bulkhead. Slides on nicely during assembly.

    Later photo of rear bulkhead. Note use of 8mm plumbing fitting to carry the bellows and
    magnet on end on control rods.

    And the inside view again.

    Miscellaneous bits - hull seals, spacer tubes and front plate for securing front bulkhead.

    Tech rack. 2 servos at rear, receiver at front,battery in centre, esc above battery.

    Photo during assembly.

    Fully assembled.

    The model has yet to have its final checkover and be ballasted.

    More photos to come if all goes well.

    If anyone has any queries on the build, just ask.

    david f
    AMS Treasurer

    Posts : 1888
    Join date : 2010-11-10
    Age : 67
    Location : Cumbria

    Re: Another cheap and simple Charlie Class

    Post  david f on Sat Oct 17, 2015 12:42 pm

    Nice to see another sub in the Keep It Simple category!

    When I think back on this season's sailing - your Graupner  Shark was always there and always sailing.

    Nothing like this available now commercially, I think?


    Last edited by david f on Mon Oct 19, 2015 10:52 am; edited 1 time in total
    John Wrennall
    AMS member

    Posts : 157
    Join date : 2011-11-16
    Age : 71
    Location : Leyland

    Re: Another cheap and simple Charlie Class

    Post  John Wrennall on Sat Oct 17, 2015 3:57 pm

    Nothing commercial like it that I know off.

    It was easy and straight forward to build, the only fiddly bit being the cross-over control links for rudder and hydroplanes inside the rear cone.

    Down to the pond with it tomorrow if the weather is fit


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    Re: Another cheap and simple Charlie Class

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