Upstart oz570


Upstart - plan thumbnail image

Upstart - completed model photo

This plan was found online 20/04/2011 at:
Outerzone planID: oz570 | Filesize: 652KB | Format: • PDFbitmap | Credit*: DPlumpe, Ratracer


About this Plan

Upstart - 51in CL Stunt .60, no flaps, Claude McCullough, May1948 AT.

Quote: "More and more U-Controllers, tiring of the pace of speed flying and the necessity for continually buying the latest hot irons and atomic fuel concoctions to keep up with the field, are taking up precision flying. Here real skill pays off and, if you have that certain touch that practice brings, a first place win can be had with a moderate-price engine not personally souped up by the manufacturer or even an old klunk. The advent of the glow plug makes stunt even more attractive. removing ignition worries and lightening wing loadings.
In designing the 'Upstart' for the coming contest season, we've tried to get away from the straight angularity that has caused 'stunt job' to become almost synonymous with 'box car'. This requires a bit of doing since the requisites for top notch performance, ample wing area and tail surfaces, little or no dihedral and a short moment arm, aren't easy to reconcile with a zooty appearance. But wherever it was possible without compromising design factors, realistic features were retained. The two schools of thought on stunt flying, 90 per and slow 'n easy, will find the Upstart a little on the fast side of the middle of this argument, fast enough for lots of zip and slow enough to keep from mangling square loops by cutting the corners. The thick symmetrical wing gives stable inverted flight and will handle all the power you can sit in the nose.
Recommended plants include the Orwick, Super Cyke, Ohlsson 60, Atwood or similar size engine. In the original a Pacemaker was used, verifying my free-flight-founded conviction that this now out-of-manufacture engine is a superior job that deserved more attention than it ever got. A glow plug is used, obviating the need for ignition. Some of this saved weight is incorporated into the structure, making for ruggedness and durability during an accidental ditching. Weighing in at a fraction over 3 pounds, the Upstart (if you will pardon our enthusiasm) is really a sweet performer on the end of the lines and can deliver any acrobatic fillip in the book. The plans may be enlarged through the use of the scale ruler. Although a little unusual in outline, the fuselage is very simple to construct..."

Update 07/11/2017: Replaced this plan with a clearer copy (scanned from fullsize) thanks to Ratracer.

Quote: "Roger Newman over at the David Baker Heritage Library site was kind enough to share these plans with us and should be mentioned."

Direct submission to Outerzone.

Update 09/11/2017: added article, thanks to Pit.

Supplementary files

Previous scan version.


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oz570 datafile

by Claude McCullough
from Air Trails
May 1948 
51in span
Tags: IC C/L
all formers complete :)
got article :)



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