Shrimp (oz1593)

About this Plan

The Shrimp. 27in span FF sport for K&B Infant power, or Co2. From Model Airplane News, March 1949.

Quote: "A new era in IC powered models has been started by the Infant - build a Shrimp and join the fun! Shrimp, by Jack Florenzie

HERE at last is flying as you want it. This small model is an original design that can be built on the bread-board and flown in the neighborhood park - yes, this style of flying will thrill that blood that has been cooling with the type of flying we have had to do in the past. With the engine run timed before-hand, the ship is placed on the ground and in a few seconds it is on its way and in the air - truly a pleasure after watching some of the 'madmen' at contests heaving monsters into the air to get the most out of the limited engine run.

The Shrimp was designed primarily to carry the new K & B Infant glow plug engine. We predict the Infant will give free flight the shot in the arm it needs. Here is flying at its best!

The plans have been made full size, so no enlarging will be required. The pages upon which the plans are printed will lie perfectly flat, and you can build right over them if you wish. Lay a sheet of wax paper over the plans to keep the cement off the magazine.

To start construction, select soft balsa which will keep the framework weight down; the covering can then be a little heavier. This will save a lot of work later on if the model lands in a tree. Lay out the fuselage, and in order to get the two sides alike, one can be built atop the other. When dry, remove from the plans and insert the cross-members. Cut the keel pieces and cement in place along with the firewall. Bend the landing gear, cement in place, and bind with thread. Fill in the sides at the nose as shown and sand the entire job, then re-cement all of the joints well for added strength. Carve the cowl to fit the engine. Since glow fuel is to be used, it is best to paint the entire nose of the ship with Testors' Hep; this is not harmed by the glow fuel as is regular dope.

You will note that two different noses are shown on the drawing, a long one for the infant and a shorter one for the OK CO2. If you expect to fly the ship with more than one powerplant you can make several detachable noses, as the plans indicate. The nose in use is positioned on the fuselage by the block of 1/4 in thick balsa, and held in place with a rubberband on each side.

The tail assembly is next and is cut to shape from soft balsa and sanded to shape as you would form the wing of a hand launched glider. Sand smooth and cement in place, checking to see that it doesn't warp while the cement is drying.

The wing ribs are cut from hard balsa to keep them from warping; it is best to use C stock for these ribs if you can get it. Cut the wingtips and trailing edge and cement them in place, over the plan along with the spar. Then, cement in the ribs, cut the wingspan gussets from hard balsa and cement to the spar. This will establish the required dihedral which should be 2 in under each tip. Add the leading edge along with the trailing edge to finish up the centersection..."

Update 03/03/2020: Added article from R/C Model Flyer, July 2003, thanks to RFJ. This is a later nostalgia feature by Jim Woodside, and covers using the model with an Elfin .25 mini diesel engine.

Supplementary file notes

Article.
Article (2003).

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