RE: Delta    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> S.P.A.D. Aircraft - Coroplast design >> RE: Delta
Page: <<   < prev  1 2 3 [4]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: Delta - 12/16/2008 5:03 AM   
combatpigg



Posts: 16881
Score: 376
Joined: 11/22/2003
Last Login: 5/20/2013
From: arlington, WA, USA
Status: offline 		Hi Mr Clean! If you run into OzMo, say Hi for me, but give him a wedgie, too. He seems to be having more than his fair share of fun
Is your BullDawg a flat sheet wing? I'm trying to make sense of the original poster's troubles and also looking back on "the way it is" with PBFs.
Like I've said before, I've got some 1/2A flat wingers that don't oscillate near zero AoA, but have built larger and heavier versions that do. After running the CGs back and forth, I can't call it pitch sensitivity, it's more like when loaded down past a certain point, flat airfoils have a basic flaw that makes them unable to cope with speed. Keep them light enough and all is OK.

< Message edited by combatpigg -- 12/16/2008 5:16 AM >


_____________________________

Blatantly corrupt umpiring at Yankee Stadium is an American tradition
It''s just part of the game.

Hide Signatures

(in reply to avroarrow)
       Post #: 76

RE: Delta - 12/16/2008 3:31 PM   
mclina



Posts: 1809
Score: 111
Joined: 12/28/2006
Last Login: 4/2/2013
From: Westford, MA, USA
Status: offline 		I am pretty sure that my problems were with the CG and with my short attention span. After this thing failed to fly on the second attempt, I think I just decided I had other uses for the engine and radio gear.

You should see the pile of SPADs in the corner of my basement....

Someday, maybe later this winter, I really want to build a delta that will fly.

Hide Signatures

(in reply to combatpigg)
       Post #: 77

RE: Delta - 12/16/2008 5:23 PM   
Clean



Posts: 1373
Score: 116
Joined: 4/19/2002
Last Login: 5/4/2013
From: Parkville, MO, USA
Status: offline 		Yes the Bulldawg from the SpadDawg's website is two sheets of 4 mil with a box on it. I flipped it over and made what I call a TopDawg for easier launches though I had problems with my cleaned up one, my first one was my bulldawg flipped around. My control surfaces were locking up because my servos attached at the very center and the wing bows pretty good. Servos in the center of the aileron gives no problems. But it's pretty stable surprisingly enough, course it's not light either.

http://spadworld.net/gallery/displayimage.php?album=random&cat=10161&pos=-461




< Message edited by Clean -- 12/16/2008 5:33 PM >

_____________________________

Intentional landings WITH a PBF are not
the intentional design OF the PBF

Hide Signatures

(in reply to mclina)
       Post #: 78

RE: Delta - 12/19/2008 8:43 PM   
combatpigg



Posts: 16881
Score: 376
Joined: 11/22/2003
Last Login: 5/20/2013
From: arlington, WA, USA
Status: offline 		Thanks for the link to SpadDawg. I couldn't make out enough detail to see what is going on, though. By saying 2 sheets of 4 mil, do you mean they are laying in a sandwich up to the hinge line of the elevons? Criss-crossed? It looks like an ingenius set up, especially for those days around here when the ground is soggy.
Getting a stash of 2 mil is on the "to do" list this year to try a project like this with.


_____________________________

Blatantly corrupt umpiring at Yankee Stadium is an American tradition
It''s just part of the game.

Hide Signatures

(in reply to Clean)
       Post #: 79

RE: Delta - 12/20/2008 4:27 AM   
Clean



Posts: 1373
Score: 116
Joined: 4/19/2002
Last Login: 5/4/2013
From: Parkville, MO, USA
Status: offline 		You might be able to make a 2 mil 15 size version of the dawg, but the full size are 4 mil. In the uk they have a CoroRoo and it is essentially the same thing however it is a center 4 or 6 mil sheet with a carbon rod for a spar, then with a top and bottom 2 mil sheet, so it's actually 2 mil thicker all together but it gets down the road just as quick.

That is the nice thing about SPADs, clean em, don't clean em, don't worry about water damage, it's all fuel proof already. Only have to worry about tank leaks getting the gear wet.

They bounce pretty good too.

_____________________________

Intentional landings WITH a PBF are not
the intentional design OF the PBF

Hide Signatures

(in reply to combatpigg)
       Post #: 80

RE: Delta - 12/20/2008 8:40 PM   
emeraude


 

Posts: 49
Score: 100
Joined: 12/13/2006
Last Login: 6/23/2011
From: ISB, PAKISTAN
Status: offline 		what should be the dimensions for the 15 size ?

Regards

Hide Signatures

(in reply to Clean)
       Post #: 81

RE: Delta - 12/26/2008 11:25 PM   
Clean



Posts: 1373
Score: 116
Joined: 4/19/2002
Last Login: 5/4/2013
From: Parkville, MO, USA
Status: offline 		Don't know, I wouldn't cut it in half though, It'd have a bigger wing than the full size, you won't have as much horsepower to propel through the air at a high enough rate for lift. Maybe, 3/4 size? 2 sheets just like the original and a folded 2 mil fuse.

_____________________________

Intentional landings WITH a PBF are not
the intentional design OF the PBF

Hide Signatures

(in reply to emeraude)
       Post #: 82

RE: Delta - 1/11/2009 1:58 AM   
Clean



Posts: 1373
Score: 116
Joined: 4/19/2002
Last Login: 5/4/2013
From: Parkville, MO, USA
Status: offline 		Even sent an email to his club. Still no joy.

_____________________________

Intentional landings WITH a PBF are not
the intentional design OF the PBF

Hide Signatures

(in reply to Clean)
       Post #: 83

RE: Delta - 1/25/2009 2:32 AM   
Clean



Posts: 1373
Score: 116
Joined: 4/19/2002
Last Login: 5/4/2013
From: Parkville, MO, USA
Status: offline 		Come on Avvro, you're killin me here.

_____________________________

Intentional landings WITH a PBF are not
the intentional design OF the PBF

Hide Signatures

(in reply to Clean)
       Post #: 84

Page:   <<   < prev  1 2 3 [4]
All Forums >> RC Airplanes >> S.P.A.D. Aircraft - Coroplast design >> RE: Delta
Page: <<   < prev  1 2 3 [4]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.344RCU1