Corky II (oz7905)
About this Plan
Corky II. Radio control sport seaplane model, for 2 or 3 channel RC and 1/2A power.
Quote: "A 1/2A sport seaplane designed for two or three channels. A Cox .049 with Ace throttle sleeve provides plenty of power and idle for taxiing. Corky II by Ted Strader.
Corky II is an enlarged version of a single channel .020 powered seaplane I designed in 1972 which was never intended to be flown from the water! Being an avid seaplane fancier, I decided to use this configuration and simply let it land on the grass - after all, sailplanes do it all the time.
After a couple of seasons of hand launching from our hay field, the urge became great enough to head for the lake. The hull had been designed for water, even though the original intent was to keep dry.
Corky I floated, taxied and, as witnessed on at least a hundred hand-launched flights, flew like a greased bullet with incredible stability, its 17 ounce flying weight didn't prevent it from catching four or five thermals and almost becoming lost. It did have one minor flaw - it didn't want to ROW! The step was positioned too far aft of the CG for the ship to rotate without an elevator.
On the first day of this past September. I decided to revamp the design for multi in time for the Brimfield, Massachusetts water meet September 12th.
In eleven days, Corky II became a reality; larger, using three channels with one of them operating an Ace sleeve throttle on a Cox Medallion .049. When my son Eric and I arrived at Brimfield, the only thing we'd had time to check was the throttle control. Corky II had not been test flown, glided or even floated. However, five flights were made that day - all hand launched as the wind was gusty and the water quite choppy.
The next weekend we went to a local hydro meet at Round Lake, N.Y., but, due to equipment problems, failed to re-ally set the world on its ear! By the end of the day, the ROW scoreboard read: Water 7, Corky II 0: and warm weather fast disappearing.
In the hope that a few good days yet remained, I installed some newer equipment which checked out well and waited for the weekend. Saturday was almost perfect so we headed back to the lake. The water had a slight ripple, it was warm, there wasn't a boat in sight, and my chief pilot made five near-perfect ROW's. The following Wednesday we went back again and, by the time we had taken advantage of that day and the following Saturday and Sunday, Corky II had completed 25 ROW flights, many of which were captured on film in the shots presented here. What we refuse to admit is the two times we completely missed the mile-long Lake and landed on the beach; the time it ran aground on a sand bar: and the couple of times it was taxied into our row boat. These are just ugly rumors with no basis in fact.
The hull of the Corky progresses from a V to an inverted V, or cathedral configuration, which, in the case of this model, is very easily formed and enhances water handling. On the step, a tunnel allows air to help break the vacuum.
We have not felt the need for a water rudder as the model is quite maneouverable on low power..."
Supplementary file notes
Article pages, text and pics, thanks to hlsat.
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
by Ted Strader
from RCMplans (ref:678)
IC R/C Floatplane
all formers complete :)
got article :)
Found online 19/07/2016 at:
Format: • PDFbitmap
Credit*: davidterrell80, Balsaworkbench
Do you have a photo you'd like to submit for this page? Then email email@example.com
User commentsNo comments yet for this plan. Got something to say about this one?
Add a comment
* 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.
© Outerzone, 2011-2021.
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.