Cirrus F3p - Page 5 - RC Groups
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Aug 15, 2008, 01:28 AM
Registered User
Originally Posted by mini ifo

Yes, the plane is built using 3 mm depron. I used 1mm CF for the wing support, and .75mm for the truss support.

I also installed a 3mm x .5mm flat CF strip along the back of the wing.

Mini Ifo
Thanx for the info.
I'm gonna give it a go.
It will be my first F3P build.
What glue do you use for attaching the CF bracing to the Depron?
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Aug 15, 2008, 08:24 AM
Registered User
Aio_1's Avatar
Foam safe CA works well and is nice and light.
It may be a little more brittle than UHU Por.

Aug 18, 2008, 01:33 PM
Fly lower!
aerolite's Avatar

I use medium thickness foam safe glue. Bob Smith is my favorite!

Dec 26, 2008, 03:43 PM
Registered User
the link to the plan doesn't work anymore :S
can someone send me the plan of this plane?

grtz and thanks
Dec 26, 2008, 04:00 PM
Registered User
Go to the secont page, they are there in the zip.

Dec 27, 2008, 05:02 PM
Registered User
Oh sorry, thanks
Dec 31, 2008, 06:05 PM
Suspended Account
I Cant Find The Plans On The Site You Put There. Where Can I Find Them
Dec 31, 2008, 06:11 PM
Registered User
Half way through in a ".zip"
Jan 10, 2009, 02:23 AM
Glider Junkie Beyond Help
C4X's Avatar

Great design

After looking very carefully at all the plans available here in F3P, checking out any videos I could find, and generally fantasizing about which one has the sexiest lines, I have begun a Cirrus

From the start, I knew I was after a design that emulates as closely as possible the classic F3A lines of its big brothers and sisters. Obviously there are compromises between the two types, but I think the Cirrus has some sweet lines. The video of his design in motion (by AnthonyF3P) sold it for me. Looks like a very slow, precise flyer. Can't wait to get it all togethor and see for myself! Any consensus (Anthony?) on how best to brace and reinforce key areas with this bird? LE carbon strips, or round stock at mid chord (haha, there is no chord )? Maybe I'll try something new here from some things I've read about lately. Anyways, thanks for the great design Anthony! Here's a pic of my cutouts (cellfoam88). I'll post more when it starts coming togethor.

Jan 30, 2009, 09:13 PM
when i say gas i mean gasoline
louu's Avatar
heres mine it doesent do rolling circles as good as i would like it to or knife edge so i just added those 4 things on the wing but dident try it yet. it ways 5.25 oz i used a bunch of heavy stuff like the big deans plugs jeti 8a esc. 3 eflight s75 servos. its 3mm depron from rc foam .com
Feb 05, 2009, 09:42 AM
Registered User
TurboCinqy's Avatar

A few weeks ago I started tot build a cirrus.

I painted it in the same colours as the original one at the first post.

Today I finished it.

Maybe some more stabilizers in the future but for now good enough for a maiden.

I tried the new turnigy motor 2211 1300kv (17 grams) . The gold 19 grams (21 real) is better but I'll give it a try. It had enough power to hover at 3/4 throttle.

RtF weight is 119 grams with 3x6 grams Gr/JR C131 servo. 7gr receiver, 4gr 6A ESC and 2s240 lipo from 14 grams.

Thanx for the plan.

Grtz. Dennis (Holland)

some pics.

(at the back a F3X)

more at: (in dutch)
Feb 09, 2009, 05:28 AM
Registered User
TurboCinqy's Avatar
Yesterday I made the first flight.
It's really slow and stable. Did not do much because of the many planes in the air.
CG was a bit far at the back so in a turn the tail dropped down.
Rudder is very sensitive.
Hovering does it almost without inputs.

Turnigy 2211-1300 kv has enough power for this plane at 119 gram AUW.

Some photo's of the day before.

Feb 09, 2009, 09:12 AM
"what ever just crash it"
luger007's Avatar
I'm just dabbling in F3P even though I fly outdoors very early in the morning and late at night when there is no wind. I'm curious if there is a big difference between using 1mm carbon rod Vs. Kevlar or Spectra thread? True, the thread won't work in compression but if used correctly, shouldn't it be lighter and make just as rigid an airframe?

Thanks for posting the plans 'AnthonyF3P', your Cirrus looks like a real beauty!

Has anyone successfully located "Climapor" for a US market? Could this be the next 'Depron' used in all the latest models?

Feb 09, 2009, 10:36 AM
Registered User
Aio_1's Avatar
Hi Matt,

I started off using thread and thought it was a great approach but then I switched to carbon rod and I much prefer the rod. Thread does a great job but you can't easily match the rigidity you can get with rods except with quite highly tensioned lines.
Any crash damage tends to be much worse when the airframe is pre-stressed by tensioned thread. Even a relatively minor impact or handling error can cause a tensioned thread to tear out of it's anchorings!
Thread also makes transport more difficult as there's much more rigging to snag and it's harder to see than rods. Again handling damage is far more likely.
I also find it considerably easier to repair a rod braced plane.

On the plus side for thread is that it's lighter, cheaper and I reckon it's a little easier and quicker to install.

The weight gain with rods is not huge and I think it's worth it.


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