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

Logged in members see NO ADVERTISEMENTS!


Engine Position Cox_ba12





Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Perfect Tanks. Please enlighten me
by kevin king Today at 11:35 am

» "Forcing My Brain To Learn Things It Doesn't Want To Learn" Still Messing with the Dragon.
by andrew Today at 10:50 am

» A puzzle....whatisit
by rsv1cox Today at 10:37 am

» Pretty Bee
by rsv1cox Today at 10:14 am

» Scientifc Stunt Trainer
by rdw777 Today at 7:27 am

» .020 Pee Wee won't start (solved!)
by thomaslowery Yesterday at 4:48 pm

» Space Bug Jr Crank - WANTED
by AMCGUY Yesterday at 1:11 pm

» Cox PeeWee Micro Speeder
by 1/2A Nut Sat Jun 25, 2022 11:01 pm

» Loose ends................
by GallopingGhostler Sat Jun 25, 2022 1:59 pm

» Question for Ken Cook -- CG location
by Kim Sat Jun 25, 2022 5:05 am

» Follow The World's Smallest Traveling Engine!
by Oldenginerod Sat Jun 25, 2022 12:00 am

» wanted - near impossible - .010 crank and cylinder
by cstatman Thu Jun 23, 2022 5:26 pm

Cox Engine of The Month
June-2022
balogh's

"COX Tee Dee .051 on duty"



PAST WINNERS
CEF Traveling Engine

Dick Russ Models
Win This Engine!
Forum Store
CEF Ear Savers
Gallery


Engine Position Empty

Engine Position

Go down

Engine Position Empty Engine Position

Post  Yabby Fri Jun 25, 2021 5:57 am

I like building and flying half-A profile slab wing models with my Cox Surestart engines. I build from plans I find on outerzone and I also design and build my own models to see how they go. I have noticed looking at plans for slab wing half-a profile models on outerzone some have the propeller center-line quite a bit above the wing center-line and others have the propeller center-line inline with the wing centre-line. The half-A Nobler has the propeller center-line quite a bit above the wing center-line and it is my understanding it is quite a good model for a slab wing profile plane.

Is there a significant difference in the way a model will perform dependent on the alignment of the propeller center-line in respect to the wing center-line? I am not technically astute in this area and a basic "high level" understanding of the difference in the engine mount position in respect to the wing may help me with my own designs for half-A models.

Any thoughts, opinions or information greatly appreciated.

Yabby
Yabby
Yabby
Gold Member
Gold Member

2021 Supporter

2022 Supporter

Posts : 188
Join date : 2021-06-08
Location : Murray River

Back to top Go down

Engine Position Empty Re: Engine Position

Post  batjac Fri Jun 25, 2021 4:49 pm

Not really.  For larger, Hi-Zoot planes it makes a difference if you're going to fly competition, but if you're just flying for fun it isn't a big deal.  All we really need for our 1/2A's for sport flying is to ensure is that the wing and tail surfaces are parallel with each other and that the engine thrust line is also parallel with the wing.

Some 1/2A designs have some "up" built into the stabilizer, but those seem to be planes designed as basic trainers just to keep the novice in level flight with low powered engines.  At least that's how I interpret it.

The Level-Headed Mark
batjac
batjac
Diamond Member
Diamond Member

2020 Supporter

2022 Supporter

Posts : 2089
Join date : 2013-05-22
Age : 59
Location : Broken Arrow, OK, USA

Back to top Go down

Engine Position Empty Re: Engine Position

Post  Yabby Fri Jun 25, 2021 5:33 pm

Lol. Thanks Mark, I like that answer as that is how I built planes as a youngster and have been doing again because it seemed easy and I sort of thought symmetrical with centers aligned had to be a sort of reasonable average. And as Im sure I have said many times, I dont compete, never will, but dont quite fly just roundy roundy, It try and do stuff and am learning and having lots of fun, both building and flying my simple models. :-) Thought it was worth asking though, as there is a real lot I dont know, and sometime simple changes can make a big difference.

Thanks for the reply.

Yabby
Yabby
Yabby
Gold Member
Gold Member

2021 Supporter

2022 Supporter

Posts : 188
Join date : 2021-06-08
Location : Murray River

Back to top Go down

Engine Position Empty Re: Engine Position

Post  rsv1cox Fri Jun 25, 2021 6:55 pm

Yabby wrote:Lol. Thanks Mark, I like that answer as that is how I built planes as a youngster and have been doing again because it seemed easy and I sort of thought symmetrical with centers aligned had to be a sort of reasonable average. And as Im sure I have said many times, I dont compete, never will, but dont quite fly just roundy roundy, It try and do stuff and am learning and having lots of fun, both building and flying my simple models. :-)  Thought it was worth asking though, as there is a real lot I dont know, and sometime simple changes can make a big difference.

Thanks for the reply.

Yabby

I have thought about that too. Seems to be a function of style and design.

A Cox .049 powered crawdad/fish. Interesting..............
rsv1cox
rsv1cox
Top Poster
Top Poster

2020 Supporter

2021 Supporter

2022 Supporter

Posts : 7943
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

Engine Position Empty Re: Engine Position

Post  Yabby Fri Jun 25, 2021 10:13 pm

lol! I Love This Forum! lol!
Yabby
Yabby
Gold Member
Gold Member

2021 Supporter

2022 Supporter

Posts : 188
Join date : 2021-06-08
Location : Murray River

Back to top Go down

Engine Position Empty Re: Engine Position

Post  rsv1cox Sat Jun 26, 2021 6:08 am

Yabby wrote:lol! I Love This Forum! lol!

Sounds fishy to me........Smile

Bob
rsv1cox
rsv1cox
Top Poster
Top Poster

2020 Supporter

2021 Supporter

2022 Supporter

Posts : 7943
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

Engine Position Empty Re: Engine Position

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