I was wondering what would be the best way to repair a broken foam rudder. This is a dynam FW 190. Just about all of the rudder has come apart and was wondering what would be the best advice to try and repair instead of replacement. Hinge tape and foam tac?
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Advice, how to repair broken rudder
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I always cut the hinge free and clean up the edges on the fixed and moving surfaces, then re-hinge with standard CA hinges.
Eventually the bending foam will fail and you have to re-hinge ALL of the EPO models (that don't already have hinges inserted into the foam)
the thicker the hinge foam at the bend line, the faster it fails from moving the hinge in flight.FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.
current planes from 1/2 oz to 22 lbs
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I never rely on the thin foam hinges - seen more than one come apart in the air. Also, some are so thick they load the servos excessively, and some paper thin. I don't like CA hinges either; I can't tell if the glue really soaked into the joint. I use the DuBro captive-pinned hinges, the narrow ones on small surfaces, wider on large surfaces, or those that may see higher loads. Drilling a 1/16" hole through the foam and hinge, then gluing the tip of a round toothpick into that hole makes sure that the surface stays attached, even if the primary glue fails. I guess that would work with CA hinges, too, but never tried.
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Originally posted by doctormike View PostYup...The pin hinges are definitely the best way to go. Be sure to put the TINIEST bit of 3 n' one oil in the hinge to keep any glue overflow from binding it. Doc
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Just glue it on solid with epoxy! No one needs a working rudder! Pfffffttt. :bluetongueMarc flies FW & FL: AL37, MiG-29, T45,F4, A4, A10, F104 70 and 90, P38, Dauntless SBD, Corsair, B17, B24, B26 & P61, Lipp.P19, ME262, Komets, Vampire, SeaVixen, FMS Tigercat, FOX Glider & Radian XL.
Rabid Models foamies, including my 8' B17 & 9' B36... and my Mud Ducks! www.rabidmodels.com
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Actually the old Parkzone P51bl came with no operational rudder or landing gear. We added landing gear and flew them from rolling takeoff and landing. You could steer it with the ailerons fairly well occasionally you would have to abort a takeoff but mostly were successful. We only flew from smooth hard surfaces. Granted it was much easier after adding the rudder and steerable tail wheel but it was doable.
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