Itsy Bitsy (oz1014)
About this Plan
Itsy Bitsy. Free flight gas model, for Allbon Bambi .009 power.
Quote: "The Allbon Bambi engine lends itself ideally to sport models of all types - including many small kit models designed for rubber power. And, these models can be flown indoors - in a large armory or gym with an 80 foot ceiling.
Because of the small size, .009 cubic inch displacement (yes, we said .009 - not .09), the engine is somewhat harder to start than larger diesels. One of the reasons is that very critical starting settings are necessary - and these have a tendency to vary from day to day. However, this is a minor inconvenience compared with the thrill of sub-miniature flight.
The Itsy Bitsy is a rather large model for the Bambi, but it has proved a good starting point. A smaller model, with about 45 square inches of wing area, would hop up flight performance. Frankly, we prefer our slower flying model, since it provides the pleasure of flying with motor runs in excess of one minute, with a minimum of chasing.
Our plan shows the model half-size, with all of the structural parts full-size. For actual construction, you need only mark out the rib spacing for the wing and scale up the fuselage sides. It's advisable to cut all of the parts to shape before beginning any fabrication. In the long run, this saves time since it eliminates hopping back and forth between jobs - you have every piece at hand exactly when you need it.
As a personal preference we begin construction by assembling the fuselage. On this model, it is necessary to assemble parts A, B, C and the engine bearers before work on the sides can begin. Note that part C mounts under the engine bearers and acts as a landing gear platform. Bolt the engine to the bearers, then add formers A and B. Proper spacing can be achieved by cementing former A on the bearers so that it is flat against the engine's tank. Part C should butt-join against parts A and B..."
Update 23/04/2014: Replaced this plan with a clearer copy redrawn in CAD thanks to rchopper56.
Quote: "Steve, I did this one last year. All parts are now full size and it also includes the OCR article. It is a raster file created from a vector file. There were some minor mismatches in the parts from the original - they were corrected in cad"
Supplementary file notes
Alternate format of the same plan and article pages, scanned from original magazine print. Note this is not a full-size plan, the layout is at 1/2 scale, but the formers are shown fullsize.
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by Bob Buragas
from Flying Models
all formers complete :)
got article :)
Found online 02/05/2011 at:
Format: • PDFbitmap
Credit*: RalphB, rchopper56
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