Cox Engines Forum
You are not logged in! Please login or register.

Logged in members see NO ADVERTISEMENTS!


Baby Ring - Positive angle of incidence??? Cox_ba12





Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Wanted:140 Parts
by rsv1cox Today at 10:24 am

» It's been a nautical day
by rsv1cox Today at 10:19 am

» a cheap sport muffler
by rsv1cox Today at 7:05 am

» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (December 2023)
by Admin Today at 12:46 am

» Space Bug Jr. - Trying to determine just how stupid I want to get
by Admin Yesterday at 11:43 pm

» The evil pliers, probably caused more damage
by roddie Yesterday at 9:23 pm

» *Cox Engine of The Month* Submit your pictures! -December 2023-
by roddie Yesterday at 9:15 pm

» Waited 3 months for these Enya Engines (two more to come yet) -- special build from Ken
by sosam117 Yesterday at 7:22 am

» Jerobee electric to glow conversion nr 2
by OVERLORD Yesterday at 4:50 am

» Are These Stuka Black Knight parts still useful?
by 944_Jim Sat Dec 02, 2023 10:03 pm

» New Hobby???? Free Flight.....
by NEW222 Sat Dec 02, 2023 6:17 pm

» From Canada today
by NEW222 Sat Dec 02, 2023 10:46 am

Cox Engine of The Month
November-2023
1/2A Nut's

"TD .020 RC"

More info on this engine!




PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


Baby Ring - Positive angle of incidence??? Empty
Live on Patrol


Baby Ring - Positive angle of incidence???

Go down

Baby Ring - Positive angle of incidence??? Empty Baby Ring - Positive angle of incidence???

Post  rsv1cox Sun Oct 07, 2018 11:58 am

I'm approaching the point where I will have to cut out the relief in the fuselage for the wing, and looking at my original B Ring with a built up wing and Chauncey's tracings it looks like there is a positive angle of incidence. If there is, what is it in degrees?

But looking at my Scientific Cyclone with a flat wing, the angle of incidence is zero. Is there a different angle for built up wings as opposed to flat wings?

This B Ring will have a solid SIG air foil wing.

Baby Ring - Positive angle of incidence??? Baby_r15

Baby Ring - Positive angle of incidence??? Baby_r17

Baby Ring - Positive angle of incidence??? Baby_r16

Thanks
rsv1cox
rsv1cox
Top Poster
Top Poster

2021 Supporter

2022 Supporter

2023 Supporter

Posts : 9987
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

Baby Ring - Positive angle of incidence??? Empty Re: Baby Ring - Positive angle of incidence???

Post  944_Jim Sun Oct 07, 2018 12:16 pm

Bob,
I saw that too. I took it out and made the stab and wing parallel.
Alibi: I haven't completed the build.
944_Jim
944_Jim
Diamond Member
Diamond Member

2021 Supporter

2022 Supporter

2023 Supporter

Posts : 1872
Join date : 2017-02-08
Age : 58
Location : NE MS

Back to top Go down

Baby Ring - Positive angle of incidence??? Empty Re: Baby Ring - Positive angle of incidence???

Post  batjac Sun Oct 07, 2018 1:12 pm

Bob,

For my first Beginner's Ringmaster, I did put in the positive incidence.  The positive incidence is there for a beginner pilot who is just trying to keep the plane in the air without crashing and not going to be flying inverted, and has helped the two pilots I used the plane to introduce to CL flying.  For my Baby RM, I didn't have any positive incidence.  I guess it's been a while, but I don't remember there being positive incidence in the Baby RM plans I used.  

For the beginner pilot, the balance point is farther forward than a normal stunt design to keep the plane stable and non-twitchy.  With the balance point forward of optimal, the positive incidence of the wing helps the plane fly level at speed.  Since you're beyond the "let's keep it simple so you don't crash going roundy-roundy" stage, just leave off the incidence and make everything inline.  That'll make every maneuver other than inside loops fly better.

When I did my second Beginner's RM last year using 4" SIG airfoiled balsa, I left everything inline and it flies great.  See the pics and video in the 9th post of "this" thread.  The positive incidence would definitely not be wanted with the airfoil shaped balsa wing.

The "Has An Answer For Everything" Mark
batjac
batjac
Diamond Member
Diamond Member

2022 Supporter

2023 Supporter

Posts : 2313
Join date : 2013-05-22
Age : 60
Location : Broken Arrow, OK, USA

Back to top Go down

Baby Ring - Positive angle of incidence??? Empty Re: Baby Ring - Positive angle of incidence???

Post  rsv1cox Sun Oct 07, 2018 3:14 pm

Thanks guys. That makes sense Mark. I will shoot for zero, but with my eyes and shaky hands I never know what I will get. But if I make an error I hope it will be on the positive side.

rsv1cox
rsv1cox
Top Poster
Top Poster

2021 Supporter

2022 Supporter

2023 Supporter

Posts : 9987
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

Baby Ring - Positive angle of incidence??? Empty Re: Baby Ring - Positive angle of incidence???

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum