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Help! fuel tank attachment

Post  crs1945 on Tue Oct 27, 2015 7:34 am

What's the best way to attach a metal fuel tank to a C.L. plane. Pictures would be helpful. Thanks.
Chuck Leaves
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Help! Re: fuel tank attachment

Post  pkrankow on Tue Oct 27, 2015 6:25 pm

Enclose it inside while constructing the fully shaped fuselage.

For profiles I bend music wire, about 1/16 diameter, into a square cornered U shape slightly larger than the fuel tank. I then drill holes through the fuselage for the wires to pass. I load the holes with epoxy or Testors airplane cement before installing the wires to fuel proof the holes. This may mean the holes need redrilled before putting the wires in.

After the wires are in place and glued with something suitable (epoxy or Testors wood and metal cement are my choices) I hold the wire steady with a pair of pliers and bend a hook in the end to hang rubber bands onto.

For a bonus of adjustability, make the spread of the U considerably wider. Use velcro patches on the fuselage and fuel tank. Now the tank is secure and the height can be adjusted.

Phil
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Help! Re: fuel tank attachment

Post  roddie on Wed Oct 28, 2015 6:55 pm

Hi Chuck, When you say "attaching".. I have to assume that you're talking about a profile (solid as opposed to having bulkheads/formers) fuselage. Conventional profile fuses use plywood nose-doublers that fair-back into the wing's leading edge. I usually drill holes in the balsa (in-between the plywood) for gluing-in four short hardwood dowels (two top and two bottom) They can be spread apart slightly less than the length of your tank.. and protrude enough for rubber-bands to loop around the top and bottom.

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Help! Re: fuel tank attachment

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