HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Dec 06, 2008, 07:53 AM
Registered User
Joined Dec 2008
12 Posts
hi there..
ok so say i were to be making a wing off this design out of coroplast (i live in australia and cannot find anything equivalent to blucor), scaled down to 22'' wingspan...and i ran this motor http://cgi.ebay.com/ws/eBayISAPI.dll...m=160302682156
with a 2s 850mah lipo...
wat are the chances of it actually flying up and away as opposed to directly into the ground infront of me?
any help would b great and im sorry if this kind of question has become extremely repetative...im just a little new to the whole plane,brushless and propellor scene...
cheers,
matt
more_eggs is offline Find More Posts by more_eggs
Reply With Quote
Sign up now
to remove ads between posts
Old Dec 06, 2008, 08:20 AM
I'm overcoming gravity!
Murman's Avatar
USA, NC, Huntersville
Joined Jul 2008
3,807 Posts
Quote:
Originally Posted by FASTBEN
hi all this is the best and most informative thread i have read......i will be building one for sure im new to the wings so i may ask some stupid questions and all,btw i have a just go fly 300df pusher witch size wing should i go for i need the speeder.
thanks
ben
Acer at Speedwing.net used that motor on one of his 24" wings. I think anything between 24" and 30" would do just fine.
Murman is offline Find More Posts by Murman
RCG Plus Member
Old Dec 06, 2008, 09:29 AM
Registered User
scottflight's Avatar
Arvada, CO
Joined Aug 2004
365 Posts
I think coroplast would be too heavy. Wouldn't hurt to try, but I'm about 11-12 oz with a 3 cell 1320, so a 2 cell is going to be pushed pretty hard.
scottflight is offline Find More Posts by scottflight
Reply With Quote
Old Dec 06, 2008, 10:06 AM
fast,,,, faster
FASTBEN's Avatar
KELLER TEXAS
Joined Feb 2002
3,380 Posts
Quote:
Originally Posted by Flatulator
Acer at Speedwing.net used that motor on one of his 24" wings. I think anything between 24" and 30" would do just fine.
thanks a bunch for the help i guess that will be the size 30".
ben
FASTBEN is offline Find More Posts by FASTBEN
Reply With Quote
Old Dec 06, 2008, 11:46 AM
Wingman2004
wingman2004's Avatar
South Carolina
Joined Oct 2004
250 Posts
I flew a 48" wing made from 3mm coroplast, and it was a lot heavier than a wing made from blucore. It was underpowered with a 400 brushed motor. Once you get some altitude and keep your speed up it handled great. With some of the more powerful brushless motors you could have a pretty cool bulletproof wing.
wingman2004 is offline Find More Posts by wingman2004
Reply With Quote
Old Dec 06, 2008, 05:03 PM
Registered User
Joined Dec 2008
12 Posts
ok cool... i also have a 3s 1000mah from my honeybee king 2...might also give it a shot..
iv found one other thing here in aus that slightly resembles some things iv heard about..
u can buy it at picture framing shops and its a thin foam board with eaither thin cardboard or thick paper on it...im pretty sure the paper can be peeled off..would this be a better option? i might try and go for a 32'' as oposed to my original thought of 22''........would this little motor still be enough?
thanks for ur help..this is honestly the best wing thread i have ever come accross..
matt
more_eggs is offline Find More Posts by more_eggs
Reply With Quote
Old Dec 09, 2008, 09:31 AM
fast,,,, faster
FASTBEN's Avatar
KELLER TEXAS
Joined Feb 2002
3,380 Posts
HI GENTELMAN,anyone has the plane for the 32" speed wing?
thanks
ben
FASTBEN is offline Find More Posts by FASTBEN
Reply With Quote
Old Dec 09, 2008, 05:49 PM
Registered User
Joined Dec 2008
12 Posts
page 1.
more_eggs is offline Find More Posts by more_eggs
Reply With Quote
Old Dec 09, 2008, 07:05 PM
fast,,,, faster
FASTBEN's Avatar
KELLER TEXAS
Joined Feb 2002
3,380 Posts
Quote:
Originally Posted by more_eggs
page 1.
thanks bud.
ben
FASTBEN is offline Find More Posts by FASTBEN
Reply With Quote
Old Dec 10, 2008, 01:10 AM
Registered User
Joined Dec 2008
12 Posts
welcome
more_eggs is offline Find More Posts by more_eggs
Reply With Quote
Old Dec 10, 2008, 03:36 AM
Registered User
Joined Dec 2008
12 Posts
hi guys...
so i decided to go with the paper covered stuff and make a 31''....man was the paper annoying to get off..soaked it and then rubbed it all off..
bought one of these puppies:

http://cgi.ebay.com.au/ws/eBayISAPI....m=120340805662

which i shall run with a 4.75x4.75 APC prob on both a 2s 800 mah and a 3s 1000mah...i also have a smaller 5x3 and a 4.2x2...
how do u think i will do for speed, thrust and amp draw?

cheers,
matt
more_eggs is offline Find More Posts by more_eggs
Reply With Quote
Old Dec 10, 2008, 06:13 AM
Registered User
DUNDAS CANADA
Joined Feb 2006
557 Posts
Quote:
Originally Posted by more_eggs
hi guys...
so i decided to go with the paper covered stuff and make a 31''....man was the paper annoying to get off..soaked it and then rubbed it all off..
bought one of these puppies:

http://cgi.ebay.com.au/ws/eBayISAPI....m=120340805662

which i shall run with a 4.75x4.75 APC prob on both a 2s 800 mah and a 3s 1000mah...i also have a smaller 5x3 and a 4.2x2...
how do u think i will do for speed, thrust and amp draw?

cheers,
matt

I am using 99.9 % pure Methyl Hydrate liquid to remove the paper from the foam boards. It is available in the Canadian Tire stores. I am sure that the hardware store in your area will have it. As well The Home Depot or Lowes might have it.
Splash some liquid onto the board and with the rug spread on whole sheet. After 20 seconds the paper should peel off easilly.
Laddie.
LADDIE is offline Find More Posts by LADDIE
Reply With Quote
Old Dec 10, 2008, 09:28 AM
Registered User
cjbucher's Avatar
Raleigh, NC
Joined Sep 2004
2,524 Posts
Quote:
Originally Posted by more_eggs
hi guys...
so i decided to go with the paper covered stuff and make a 31''....man was the paper annoying to get off..soaked it and then rubbed it all off..
bought one of these puppies:

http://cgi.ebay.com.au/ws/eBayISAPI....m=120340805662

which i shall run with a 4.75x4.75 APC prob on both a 2s 800 mah and a 3s 1000mah...i also have a smaller 5x3 and a 4.2x2...
how do u think i will do for speed, thrust and amp draw?

cheers,
matt
According to this motor calculator: http://www.adamone.rchomepage.com/calc_motor.htm

The 4.75x4.75 prop on a 3s is your best bet:
It will draw 13.1 amps and have a speed of approx 90 mph with a thrust of 13 oz. Personally I think the speed estimate is a bit high - probably will be more like 70 mph when you take air frame drag into account.

The 5x3 prop will give similar thrust but only go 60 mph at 8 amps

The 4.2x2 would really be dismal at around 42 mph at 5.5 amp draw and only 10 oz of thrust.

Don't bother with the 2s battery unless you plan to run a much larger prop. An APC 7x5 would work with a 2s battery (17 amp draw, 17 oz thrust but only 53 mph)

Chris
cjbucher is offline Find More Posts by cjbucher
Reply With Quote
Old Dec 10, 2008, 10:32 AM
Registered User
cjbucher's Avatar
Raleigh, NC
Joined Sep 2004
2,524 Posts
Or a 6x4 prop on a 3s battery will draw 18 amps, give you 23.6 oz thrust and about 73 mph. Now that's a pretty good combo. You'll need the thrust if you want some impressive verticals...
cjbucher is offline Find More Posts by cjbucher
Reply With Quote
Old Dec 10, 2008, 02:30 PM
Registered User
smkn951's Avatar
United States, HI, Kapolei
Joined Jan 2007
1,440 Posts
what to do to get rid of flutter.
i have cf across already, taped leading edge. but at 10 seconds into a level ft flight it'll vibrate and flutter.
power is donsrc wicked jr, 3s 1300, 30 amp esc.
any suggestions on making it stronger? fg i have melted the test foam i have
BTW its made of 1/2 blue cor sanded to an airfoil.
TIA
smkn951 is offline Find More Posts by smkn951
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
QueenBee: 100" EPP wing build & fly thread Pjotrrr Foamies (Kits) 186 Jul 29, 2012 03:21 AM
Bluecor "Arado Projekt" Build Thread jimsky Foamies (Kits) 82 Sep 12, 2009 08:43 PM
ST Model Wing build thread scotta Flying Wings 20 Nov 14, 2005 05:01 PM
"Thunder" experimental wing build thread Ryan Archer Flying Wings 8 Jan 22, 2005 04:06 PM
Overlord Build Thread - My first wing. Bernoulli~Bros Flying Wings 79 Aug 15, 2004 05:50 PM