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FAA flying under 250 grams building

Old 07-04-2019, 07:06 AM
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smithdoor
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Default FAA flying under 250 grams building

Any one have drawings for building RC models under 0.55 pounds [250 grams]

Dave
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Old 07-05-2019, 12:27 AM
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ron_van_sommeren
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The less than 250g (about 9oz.) Speedmodells - RCG
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Old 07-05-2019, 07:36 PM
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smithdoor
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Thank you
Dave

Originally Posted by ron_van_sommeren View Post
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Old 07-27-2019, 05:01 AM
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AEAJR
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Mountain models has kits under 250 grams flying weight. For example, this one.
http://www.mountainmodels.com/produc...roducts_id=705

I believe Steve's has kits under that weight too.
https://www.stevensaero.com/product/...laser-cut-kit/
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Old 07-27-2019, 05:40 PM
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smithdoor
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Originally Posted by AEAJR View Post
Mountain models has kits under 250 grams flying weight. For example, this one.
http://www.mountainmodels.com/produc...roducts_id=705

I believe Steve's has kits under that weight too.
https://www.stevensaero.com/product/...laser-cut-kit/
Thank you
Building under ​Weight Ready to Fly 1.8 oz.​​​​​​
Give 6.7 oz for motor, radio, servos and battery

Dave
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Old 07-28-2019, 11:34 PM
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Abuelo
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Originally Posted by smithdoor View Post
Any one have drawings for building RC models under 0.55 pounds [250 grams]

Dave
If you interested in building from plans and probably having to interpret to utilize modern R/C, try Outerzone. They have over 10k free plans, and being a bit creative with your printing you can scale any to the size you want. Use the "Tag Matrix" feature under "Advanced".

I have a Roaring 20s with an extra bay in each wing for a 24" span that weighs 114 grams (4 oz) and a Lady Bug, essentially a scaled down Lazy Bee with a 22" span, at 152 grams (5 3/8 oz). Both have been flown and repaired multiple times but would come iunder 250 grams with careful component selection. The Pipsqueak on Outerzone, essentially a half sized Esquire, is a simple design that flies well. These are empty weights, but with wheels and pushrods in place. These may be older designs and possibly not your style, but could provide a starting point.

https://outerzone.co.uk
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Old 07-29-2019, 02:01 AM
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Originally Posted by Abuelo View Post
If you interested in building from plans and probably having to interpret to utilize modern R/C, try Outerzone. They have over 10k free plans, and being a bit creative with your printing you can scale any to the size you want. Use the "Tag Matrix" feature under "Advanced".

I have a Roaring 20s with an extra bay in each wing for a 24" span that weighs 114 grams (4 oz) and a Lady Bug, essentially a scaled down Lazy Bee with a 22" span, at 152 grams (5 3/8 oz). Both have been flown and repaired multiple times but would come iunder 250 grams with careful component selection. The Pipsqueak on Outerzone, essentially a half sized Esquire, is a simple design that flies well. These are empty weights, but with wheels and pushrods in place. These may be older designs and possibly not your style, but could provide a starting point.

https://outerzone.co.uk
Thank you
I am working excel work sheet for adding all weight be for building
After building I will use my portal scale to check the weight so have no FAA issue.

I will post the Excel work sheet for everyone when done

Dave
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Old 07-29-2019, 01:28 PM
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I do accept that not everyone likes or wants to build using non traditional materials but particularly at smaller sizes "foams" can lead to a lighter air frame thus for a given size it allows more 'motor & battery' within a total weight limit.
Not originally intended to be sub 250 but simply to be a slight as possible for the limited thrust available.
A scale 32" span EDF (40 mm) DH Venom at 202 g ready to go and that includes its 65 g 1400 mAh 2s LiPo.
Click image for larger version

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A English Electric Canberra B2 also 32" span with two 30 mm EDFs. It weighs in at 235 g with a 850 mAh 2s.
Click image for larger version

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Both use 2mm Depron and with no other reinforcement.
Sorry no plans as they were substantially built from "Google" 3 views 'tidied up' and printed out to the required size.
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Click image for larger version

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Always flown outdoors they do need pretty calm weather but it shows what can be achieved within the 'toy' weight limit.
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