About this Plan
Bumblebug. Designed by Les Howell Bumblebug is a CL stunter for 1.5cc motor. July 1951 Aeromodeller. This is a modern redrawn plan in PDFvector format.
Quote: "POPULARITY of the smaller 1.5 cc diesels now exceeds that for any other engine capacity. This fully acrobatic and very slick stunter is especially designed for either the Allbon Javelin or Elfin 1.49, and will go through every manoeuvre in the stunt schedule at almost 60 mph. Built with a fixed wing, its 28 inch span is not over-large for transport, and the rigid structure provides a tough job that will withstand the occasional prang. Why not make one for your 1.5, and fly it next week-end?
Construction. Wing. Build up ribs on 1/8 square spars dry. Add trailing edge sheets making sure structure does not twist in the process. Glue spars. Glue one leading edge sheet to respective spar and leave to dry. When dry, glue to ribs. Repeat for other sheet. One or other of sheets to be chamfered to make good fit at leading edge.
Add control system and complete centre-section sheeting. Add tips and paper tube lead outs. Form attachment ends or lead out wires. Sand smooth. Add tip weight securely.
Fuselage. Make bulkhead and bearer assembly first. Pre-cement fuse sides to this assembly, making sure (by pre-determined line on fuse side) that thrust line is parallel to wing.
Tailplane and Elevator. Make up as a complete assembly - sanded, covered, doped and hinged. Now assemble fuselage as such: wing; and tail /elevator assembly, making sure all components are square and true in all views..."
Update 28/06/2016: Added article, thanks to RFJ.
Update 19/10/2020: Replaced the PDF plan file with a clearer 2-colour version, thanks to Miguel.
Supplementary file notes
Previous scan version.
This plan is available for download in CAD format.
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by Les Howell
all formers complete :)
got article :)
Found online 07/12/2011 at:
Format: • PDFvector • CADfile
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