Spectrum oz10230

 

Spectrum - plan thumbnail image

Spectrum - completed model photo

Submitted to Outerzone: 27/06/2018
Outerzone planID: oz10230 | Filesize: 496KB | Format: • PDFbitmap | Credit*: GeorgeAlbo

   

About this Plan

Spectrum. Control line stunt model. Wingspan 55-1/2 in, for .45 power.

Quote: "About three and a half years ago I became interested in Controline Stunt. With a great deal of help from my good friend and stunt tutor, Lou Dudka, I learned to fly the AMA Stunt Pattern. During my first contest in June 1976, I saw one of the old masters compete. Bill Simons amazed me with his rule book size maneuvers and lightning corners. Watching Bill perform motivated me to work hard toward becoming an expert flyer. By the end of the 1977 season, with lots of help from Lou and Bob Hunt, I flew my first 500 point pattern with my original design, Spectrum I.

The airplane in this article took close to two years to evolve. Applying Bob Hunt's philosophy, (Flying Models, August 1977), I decided to stay with one good design and improve it from year to year. In my case that's airplane to airplane since I build two to three airplanes a season.

The first series of Spectrums were based on the Genesis 46 (oz7572) or modern look. Later versions were designed on more classical lines, ie the Aries or Juno (oz491) look if you will. The present version, nine airplanes later, is a combination of both.

Nine airplanes of three different sizes were built. Five were 35 size, two were 40 size, and two were 46 size. For those who do not relate to the difference. I'll briefly explain. The 35 powered airplanes have 50 to 52-inch wingspans, 9-1/2 : 14-1/2 inch moments, and weigh 42 to 45 ounces. I might add that the 35 size versions fly very well. The 40-powered airplanes have a 56-inch wingspan using 10 : 16 inch moments and weigh 50 to 54-ounces. Frankly, I did not like the performance of the 40-size airplanes. The 46-size versions have 58 to 60-inch wingspans and use 10 : 16 inch moments. The 46 size airplane, built relatively light 156 to 58 ounces), and with good power, flies the best.

Having built nine Spectrums of three different sizes gave me a broad scope of what I was looking for in terms of performance. At this point in time, performance wise, Spectrum nine is my best effort.

Power and performance. When talking about the performance of a stunt ship, many of us overlook the most important trim factor we have. The motor. Bill Simons, Bob Hunt and many a good flyer will agree that a strong motor can make a bad flying airplane fly well.

My first 40-size airplane was very hard to trim out and did not fly well. Originally, it had a weak Super Tigre .46 for power. When a more powerful ST .46 was used, the airplane flew better. Finally, I ran an OS Max .40 FSR and the airplane flew much better. Spectrum nine is powered by an OS Max .45 FSR. I ran this motor from day one and the ship trimmed out the first day and flew very well..."

Quote: "Steve / Mary, I recently saw the plans of the Spectrum III (oz10161) listed. That reminded me to finish cleaning and re-sizing the Spectrum plan I had been working on. This is a 55-1/2 inch Stunter designed, flown, and built By Jim Casale. This model is the first of the Spectrum series of airplanes highlighted, beginning with the July 1980 issue of Flying Models Magazine featuring foam wings, foam core stab and elevator! The plan calls for an O.S. Max .45. I'm certain that any modern ABC FP .40 could run this plane through its paces without missing a beat."

Direct submission to Outerzone.

Update 10/07/2018: added article, thanks to RFJ.

Supplementary files

Article.

Corrections?

Did we get something wrong with this plan? That happens sometimes. Help us make a correction

 

oz10230 datafile

Spectrum  
by Jim Casale
from Flying Models
July 1980 
56in span
Tags: IC C/L
all formers complete :)
got article :)

 

003.jpg
003.jpg
004.jpg
004.jpg

Do you have a photo you'd like to submit for this page? Then email admin@outerzone.co.uk

User comments

No comments yet for this plan. Got something to say about this one? Click here to Add a comment

 

 

Notes

* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.

Scaling

This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.

 

Terms of Use

© Outerzone, 2011-2018.

All content is free to download for personal use.

For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.

Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.