Fledgling (oz4117)


Fledgling (oz4117) from Sterling - plan thumbnail

About this Plan

Fledgling. Radio control model 'For the sport flyer and especially the newcomer to radio control flying'. Span 56in, area 545sqin, for engines .23 to .40 size. Sterling kit no. FS-29.

Quote: "Steve, Here is the Sterling Fledgling. It was Sterling's answer to the Falcon 56. A bit simpler and perhaps a bit more rugged. I flew one with an HB .40 PDP which was probably a bit much for her. Now if you can get someone to submit the Gazariator you will have the 'size run' of the 3 Fledglings."

Direct submission to Outerzone.

Update 05/01/2016: Replaced this plan with a clearer copy, thanks to Gene.

Update 09/05/2018: added kit review from Flying Models, April 1973, thanks to RFJ.

Supplementary file notes

Previous scan version.
Kit review.


Did we get something wrong with these details about this plan (especially the datafile)? That happens sometimes. You can help us fix it.
Add a correction

Fledgling (oz4117) from Sterling - model pic

  • (oz4117)
    from Sterling (ref:FS-29)
    56in span
    IC R/C Trainer
    all formers complete :)
  • Submitted: 11/03/2013
    Filesize: 602KB
    Format: • PDFbitmap
    Credit*: dfritzke, Gene

Fledgling (oz4117) from Sterling - pic 003.jpg
Fledgling (oz4117) from Sterling - pic 004.jpg

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

User comments

When I started building my first 4 channel trainer in '81, I started with a set of fledgling plans while I was on a 4 month work term out of province. Before the project could be finished, I'd thought of building a Kadet as I was new to RC and my only experience to date had been on an RCM 1/2 A trainer that I self taught myself on. At the time, the Kadet seemed the easier 4 channel trainer to fly and I borrowed a set of Kadet plans from a friend who was wanting to learn. Realizing that my fledgling wing would offer a little more aerobatic potential, I compromised and revamped my fledgling to mimic the Kadet fuselage c/w windshield. The result was a success. I elected to make this a tail dragger which gave it a lot of realism on takeoffs. With all of the fledgling's flight surfaces, the model's flight characteristics gave me a chance to learn some basic manoeuvres and I didn't get bored of it. The Como .40 was more power than the model needed... but oh so fun. Finishing my pilot training that year and buying a Cherokee the following year eventually led to a loss of enthusiasm for models..... till now. Time to dust off the old Kadet..... er... fledgling and make some repairs. It's a great flyer.....want to have some fun in the spring!
Derek - 08/12/2015
A very good simple model. Used with brushless motor Joker and 4S 5000 [see more pics 004]. Thanks for the plan.
ErickBaccus - 18/12/2015
I test flew a lot of these back in the day, it being a popular trainer along with the Sig Kadet and Goldberg Falcon 56. Regardless of what the kit review says, it wasn't a very good kit, heavy wood and poor die-cutting. I much preferred Sig's method of printwood with no die cutting at all. But if you managed to finish it as your first kit attempt, it was a good flyer, especially easy to land. While most beginners installed a pretty hot .40 in the nose, it was a little too much for the Fledgling, making it entirely too fast if flown wide open. And wide open was what it got, full throttle on takeoff and don't back off until told to do so. And so, even if it wasn't all that suitable as a trainer, it was a delightful flying plane for someone with a little more experience. Ailerons were too small but easily replaced with wider wood for more authority. If you build one from the plans, I would add capstrips to the ribs for a smoother surface and easier rib construction. You won't be disappointed with its performance. A good .25 is plenty.
DougSmith - 11/05/2018
Add a comment



Download File(s):
  • Fledgling (oz4117)
  • Plan File Filesize: 602KB Filename: Fledgling_FS29_oz4117.pdf
  • Supplement Filesize: 1579KB Filename: Fledgling_FS29_oz4117_previous.pdf
  • Supplement Filesize: 887KB Filename: Fledgling_FS29_oz4117_review.pdf
  • help with downloads


* 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.


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, 2011-2020.

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.