Ottair oz9395


Ottair - plan thumbnail image

Ottair - completed model photo

Submitted to Outerzone: 28/10/2017
Outerzone planID: oz9395 | Filesize: 2445KB | Format: • PDFbitmap | Credit*: MikeJones


About this Plan

Ottair - Wakefield rubber competition model.

Quote: "This is the model that took Geof Lefever to the top of the eliminators last year, despite his having to make serious repairs to the wing after the third flight, and which he subsequently flew into seventeenth position in the Wakefield contest.

In addition to presenting the model as it was flown to the '56 rules, the plan details the necessary modifications for a 50 gram 1958 model.

Fuselage. Cut four sides from medium 1/16 in sheet, select two for the actual sides and to the inner faces of these cement the 1/8 x 1/16 in longerons and spacers. Splice in the 1/8 sq rear longerons, and add the diagonal spacers. The ply rear motor anchorage can now be cemented in place, and the two sides joined with 1/8 x 1/16 in spacers placed vertically. Cement the top fuselage sheet in place, attach the under-carriage, then add bottom sheeting and ply nose former. When dry cut access door for motor peg. It is advisable at this stage to lightly cement the noseblock in place so that it is shaped as the fuselage is sandpapered.

Fin and Tailplane The construction of the fin is quite orthodox, but it must be borne in mind that it is an integral part of the fuselage, and care must be taken too ensure that the correct amount of turn is built in. Again, the tailplane is perfectly straightforward with the geodetic construction making it surprisingly warp resistant. A neater job results if the slots for the spar are cut after the ribs have been cemented in position..."

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Supplementary files



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oz9395 datafile

by CJ Lefever
from Model Aircraft (ref:258)
48in span
Tags: Rubber F/F
all formers complete :)
got article :)


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