F5D wings (Dihedral or no Dihedral)  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Airplanes >> Pylon Universe - RC Pylon Racing >> QM-40 Racing >> F5D wings (Dihedral or no Dihedral)
Page: [1]

Login
Message << Older Topic   Newer Topic >>
F5D wings (Dihedral or no Dihedral) - 5/5/2008 10:05:32 PM   
oddy


 

Posts: 177
Joined: 5/29/2003
From: Mexico city, MEXICO
Status: offline 		Hello everyone.

Could anyone tell me if F5D pylon racer wings use some dihedral.

I understand they do have dihedral in the bottom part of the wing but flat in the bottom.

Please any help will be highly appreciated

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

If I say that the Burra is Prieta is because I have the pelos in my hand.
       Post #: 1

RE: F5D wings (Dihedral or no Dihedral) - 5/9/2008 12:44:15 AM   
ptxman


 

Posts: 351
Joined: 7/31/2002
From: Calgary, AB, CANADA
Status: offline 		Most commercial F5D models have a minimal amount of dihedral. Im guessing maybe 1 degree. I could measure some of my models (Avionik D2005 etc) if you need something more accurate. Im really not sure why they even bother, the wing sction C/L is so close to thrust datum relative to other kinds of models & the fuselages are so skinny (< 2" at their tallest part). If anything, a 'top wing' model should probably have negative dihedral (anhedral) for minimal roll coupling, but its kind of a pain to mold & build. Q500's (top wing racers) are typically straight = zero dihedral & they work fine. I would say for 300 kph racing, dihedral doesnt even enter the picture, there is negligible side slipping & roll couple. It might help a bit on landings & just be 'neutral' for racing, maybe thats the thought. The model you are showing is quite dated BTW.

(in reply to oddy)
       Post #: 2

Page:   [1]
All Forums >> RC Airplanes >> Pylon Universe - RC Pylon Racing >> QM-40 Racing >> F5D wings (Dihedral or no Dihedral)
Page: [1]





Jump to:


Google 



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

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

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

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

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

Kaango.com Classifieds

0.328RCU1