wing loading numbers on scale cl-415? - Page 3 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 07-06-2006, 09:06 PM   #21
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Originally Posted by hillmanr2
So the full scale cord should be 11.47'. this would make the 12% cord at 16.5 inches and the area at 16.5 sq' just as Wells pointed out. Seems like this a bit ridiculous for a cord on a 135" wing.

The full scale would have a pan to chord ratio of 8.17 (approx) to 1

The cl-215 I have plans for has a span of 75.5 has a ration of 7 to 1

Base on the cl-215 plans I have this would mean 135" span, 19.2 cord and 18sqft area.

How much of a viarance can I have from full scale to compete in scale events?
I just finished a large scale flying boat and perhaps the figures on it may be helpful. The model is a 1/12 scale Emily flying boat with a span of 124" and wing area of 12 square feet. Fueled, it weighs 33 pounds giving a wing loading of 44 ounces per square foot. Aspect ratio is 9 to 1. Power comes from four OS52 four strokes rated at .9 hp each. I find the wing loading easily managable and the power more than adequate. Videos and build history of it are on my web page below. It is flown fast in the videos but I did slow it down for more scale like flight. It will climb on half throttle. So far so good. I built a 89" Grumman Albatross that weighs 16 pounds fueled, flying on about seven square feet for about a 36 ounce loading. Again no problem with the that and you can slow it down to a crawl with flaps. Two 52s for power.

Anyway maybe those numbers will help for comparison purposes.

Also there are a couple of short clips of the Albatross on the video page.
John Hawkins
Chezzetcook NS
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Old 07-07-2006, 05:08 PM   #22
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Thank you for the info. It is very helpfull
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Old 07-29-2006, 02:21 AM   #23
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Hi Russ ,here is the site I told you about in Vernon .The free down load plans for the 215.Now lets see if I can get this to show up .not the greatest a the computer thing.
The orginal site is in french. you have to translate it .
The one down is translated see if it works for you.
Plus the rcunivers one shows a build going on.
Check it out.

g l=en&ie=UTF-8&oe=UTF-8&prev=%2Flanguage_toolset

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