Cloud Tramp Building

Here are references to the Cloud Tramp page and the Plan Page so people will be able to build them.

Cloud Tramp Page

Plan Page

I printed the plan at half size and made a Cloud Tramp to that size. I made it exactly per half plan except the wing root and saddle, which made the ribs unnecessary.

General view of Half Cloud Tramp.

Closeup of wing saddle on plane.

Closeup of wing saddle off plane.

 

The critical part of the saddle is the side plate. This template was made by placing a piece of thin cardboard under the plan and poking holes through the plan with a pin to outline the shape.

There are a couple of tricks to making this. The wings are cut out and soaked in water, dried on a board with a spacer stick under the high point with long blocks of wood to hold the leading and trailing edges down. A 3/4″ x 1 1/2″ x 3″ block had wing ribs glued to each end on the top surface. The block is tipped up with a bit of balsa under one end to get the dihedral angle. The wing is held to the form block with the root end projecting out at the low end and a sanding block with paper perpendicular to the table sands the curved vertical face into the end of the wing, being careful to not sand away any of the leading or trailing edge, only the arc across the root end. The two root ends are soaked with glue, then glued again. When the glue gets tacky, the wing roots are butted together and held until the glue dries. I use a water base carpenter’s wood glue for this, model airplane glue does not get tacky. This joint will hold both the wing camber and dihedral joint. It was easier to do than I expected.

The wing saddle is made from two 1/32″ side plates, a 1/16″ x 1/8″ strap on stick and a piece of soft 1/8″ square filler. The stick extends 1/8″ beyond the side plates and is tapered to make it easy to get the dental rubber bands on. The filler block is formed to fit the top of the wing dihedral joint by putting the assembly on a block tilted to the same dihedral angle and sanding it with an appropriate diameter can or dowel wrapped in sandpaper. Sand so the vertex is on the centerline. Check fit and glue to the top of the wing.

This makes a much cleaner, lighter, more aerodynamic joint. Double dimensions to make a full size Cloud Tramp.

I also have a Squirrel with landing gear!  Kids love planes that take off from the ground. That will make it much more attractive to kids.

I have been unable to test the office rubber bands on my Squirrel for various reasons. I will try to get to it this weekend, one way or another.

Gary Hinze

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