Sinbad Supreme (oz5851)
About this Plan
Sinbad Supreme. Radio control sailplane.
Quote: "Model aircraft are becoming more expensive to build with each passing season. This is mainly due to sky-rocketing prices of construction materials. Being a rather active modeler, but not a particularly rich one, I felt that it was about time to reduce the cost of model building. By using spruce and balsa laminations and incorporating the no-cost 'foam wing rib', the total cost of the sailplane presented here was held to less than $30.00. This price includes the MonoKote, canopy, glue, towhook and other associated hardware (except radio).
The Sinbad Supreme is an outgrowth of the old Super Sinbad (oz6980) sailplane, originally produced by Berkely, but presently available from Sig Manufacturing Company. The wing, fuselage, rudder, and stabilizer have been completely redesigned to be more compatible with today's Standard Class sailplane. The flat bottom airfoil was taken from the Windfree (oz1637) sailplane because of its good, yet forgiving, characteristics and because it simplifies overall construction.
There have been a total of three prototypes built. Each prototype incorporated various design features which I felt were important to a versatile sport sailplane.
The seven major design criteria for the Sinbad Supreme consisted of the following:
(1) Simple construction
(2) light structure
(4) good maneuverability
(5) accept a removable power pod
(6) withstand the loads of a high start
(7) low cost
The projected weight of the finished model was established to be between 34 and 37 ounces. This would allow the wing loading to be between 7.2 oz./ft.2 and 8 oz./ft.2. The three prototypes all weighed less than 35 ounces. All of the aircraft flew right off the board with no undesirable flying characteristics.
The major reasons for choosing the construction materials and techniques employed in the model were cost, strength, and weight. It is quite surprising how strong a laminated keel and stringer fuselage can be. I have landed many times nose first with each of the prototype models, and no damage was ever incurred. Also, laminated keels and stringers provide very nice curves..."
Update 09/09/2014: Fixed the scaling on this plan to fullsize, thanks to rhewert.
Supplementary file notes
Article pages, text and pics.
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 Larry Sward
from RCMplans (ref:672)
all formers complete :)
got article :)
Found online 05/09/2014 at:
Format: • PDFbitmap
Do you have a photo you'd like to submit for this page? Then email firstname.lastname@example.org
User commentsThis is not a full-size plan. Scan of magazine plan page only. Not useful for building from.
rhewert - 09/09/2014
Good point. Fixed the scaling now. Thanks
SteveWMD - 09/09/2014
Downloading to my computer and then opening with Adobe Acrobat allows me to print out whatever scale I want.
61rcpilot - 16/01/2019
Um, yes indeed. Jolly good. But it saves time for everybody if the plans we are hosting here are scaled to full size. That's a useful starting point (the most useful) for everyone.
SteveWMD - 17/01/2019
Larry Sward was a epic modeler here in the SLC Utah area. I had the fortune of calling him a mentor. Leaned a lot from him, flew my first Super Sinbad at Point of the Mountain, here in Utah. It’s a great flying ship, ballast will be needed for strong slope winds. Best of flying to anyone building one. I have had three in my flying times.
Jack Glover - 18/02/2023
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, 2011-2024.
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.