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

Logged in members see NO ADVERTISEMENTS!


Cox Skycopter Free Flight Helicopter Cox_ba12




Cox Engines Forum

The official forum for 24/7 Cox Engines and Model Discussion! Ask Questions, Answer Questions, Discuss Cox engines, Cox products, anything CL, FF, RC, 1/2A, and more! Although memberships are encouraged, guests are always welcome!

Cox Skycopter Free Flight Helicopter Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 

Rechercher Advanced Search

Latest topics
» Revivng Some Childhood Classics
by rsv1cox Today at 7:17 am

» Introducing our Cox .049 TD Engines
by getback Today at 6:20 am

» Project Cox .049 r/c & Citabrian Champion
by getback Today at 6:17 am

» Roddie's flat-bottomed boat..
by Levent Suberk Today at 12:23 am

» Cox powered jet-pump for model Sprint Boat
by roddie Yesterday at 10:25 pm

» Micro Draco Gets to Fly on a Beautiful Morning.
by rdw777 Yesterday at 8:15 pm

» Jim Walker Firebaby
by rdw777 Yesterday at 8:06 pm

» Hydro-bat by Vic Smeed: engine probs
by GallopingGhostler Yesterday at 5:12 pm

» Fox .35 Modifications
by Onelife Yesterday at 4:36 pm

» Roddie-Rigger.. a 2005 original design
by roddie Yesterday at 3:39 pm

» [solved]most Efficent Glowhead Clip for Norvel Engine
by batjac Wed Apr 24, 2024 10:33 pm

» TD/Medallion .049 fuel draw issues
by Ken Cook Wed Apr 24, 2024 7:18 pm

Info
Cox Engine of The Month
April-2024
OVERLORD's

"Kress ducted fan with new Cox Conquest 15 RC"

PAST WINNERS
CEF Traveling Engine
Win This Engine!
Gallery


Cox Skycopter Free Flight Helicopter Empty
Live on Patrol


Cox Skycopter Free Flight Helicopter

Cox Engines Forum  :: Models and Modeling :: Models and Modeling

Go down

Thinking Cox Skycopter Free Flight Helicopter

Post  MauricioB Sun Dec 03, 2017 10:28 pm

Hello, does anyone have the COX .020 SKYCOPTER FREE FLIGHT HELICOPTER ??
I'm interested in how the blades work.
I understand that each blade has a balance to give degrees to each blade that interact with the speed of rotation.
I would like to know how much each shovel measures, in width and length.
The degree of inclination, maximum and minimum of each blade.
There's nothing like that here and it would be a nice project later on.
All information will be welcome!

MauricioB
MauricioB
Top Poster
Top Poster

Posts : 3566
Join date : 2016-02-16
Age : 53
Location : ARG

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  batjac Sun Dec 03, 2017 11:31 pm

Mauricio,  there are a few 1/2A free flight helicopters over on Outerzone that you can build:

This one is what actually first brought me to the CEF years ago: https://outerzone.co.uk/plan_details.asp?ID=3476


And others:
https://outerzone.co.uk/plan_details.asp?ID=5723
https://outerzone.co.uk/plan_details.asp?ID=6713
https://outerzone.co.uk/plan_details.asp?ID=6625
https://outerzone.co.uk/plan_details.asp?ID=3476

The Whirly Mark
batjac
batjac
Diamond Member
Diamond Member

2022 Supporter

2023 Supporter

Posts : 2335
Join date : 2013-05-22
Age : 61
Location : Broken Arrow, OK, USA

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  Ken Cook Mon Dec 04, 2017 4:13 am

The Cox Skycopter  was my fav Cox flying model. It worked and it worked too well. I lost many of them. I had probably around 10 of them and I now have one relatively new in the box. A very powerful flying heli which usually flew far too high and in these parts your not getting it back. It suffered a few issues such as the blades warping and the rotating portion would tend to give way on hard landings due to it's weight above the pivot. It's been in my garage for years and I've been meaning to dig it out. Ken
Ken Cook
Ken Cook
Top Poster
Top Poster

Posts : 5449
Join date : 2012-03-27
Location : pennsylvania

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  MauricioB Mon Dec 04, 2017 5:12 am

batjac wrote:Mauricio,  there are a few 1/2A free flight helicopters over on Outerzone that you can build:

This one is what actually first brought me to the CEF years ago: https://outerzone.co.uk/plan_details.asp?ID=3476


And others:
https://outerzone.co.uk/plan_details.asp?ID=5723
https://outerzone.co.uk/plan_details.asp?ID=6713
https://outerzone.co.uk/plan_details.asp?ID=6625
https://outerzone.co.uk/plan_details.asp?ID=3476

The Whirly Mark

Hello, thanks for sharing this information, it is very useful when checking what can be done. I'll take those plans into account the moment I decide to do something ... thank you, friend!
MauricioB
MauricioB
Top Poster
Top Poster

Posts : 3566
Join date : 2016-02-16
Age : 53
Location : ARG

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  MauricioB Mon Dec 04, 2017 5:16 am

Ken Cook wrote:The Cox Skycopter  was my fav Cox flying model. It worked and it worked too well. I lost many of them. I had probably around 10 of them and I now have one relatively new in the box. A very powerful flying heli which usually flew far too high and in these parts your not getting it back. It suffered a few issues such as the blades warping and the rotating portion would tend to give way on hard landings due to it's weight above the pivot. It's been in my garage for years and I've been meaning to dig it out. Ken

10 of them? .. wow! ... cheers
Have any chance to take the trouble to photograph yours and tell me please the measures:
Total Length of Fuselage
Location of the rotor from the tail (measured)
Length and width of the blades.
Diameter of the blades.
Total weight of the model.
Maybe for a future project that information would suit me ... it is not necessary now, only when it is convenient to do so.
Thank you!
MauricioB
MauricioB
Top Poster
Top Poster

Posts : 3566
Join date : 2016-02-16
Age : 53
Location : ARG

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  roddie Mon Dec 04, 2017 9:57 am

Hi Mauricio, I never had a Cox helicopter.. but I can provide some photos to help see the models' design and angle of the rotor-blades.

Cox Sky Copter;

Cox Skycopter Free Flight Helicopter Cox-sk10
Cox Skycopter Free Flight Helicopter Cox-sk11
Cox Skycopter Free Flight Helicopter Cox-sk12
Cox Skycopter Free Flight Helicopter Engine10

Cox also made .049 powered examples..

Cox Sky Jumper;

Cox Skycopter Free Flight Helicopter 47242a10
Cox Skycopter Free Flight Helicopter _5810
Cox Skycopter Free Flight Helicopter Cox-sk13

Cox Sky Ranger;

Cox Skycopter Free Flight Helicopter Vintag10
Cox Skycopter Free Flight Helicopter Skyran10
Cox Skycopter Free Flight Helicopter 687b0610
Cox Skycopter Free Flight Helicopter Vintag11

Cox Attack Cobra video; (FUNNY KID!!)

https://www.youtube.com/watch?v=1_WNlBNYG7U







roddie
roddie
Top Poster
Top Poster

Posts : 8268
Join date : 2013-07-17
Age : 64
Location : N. Smithfield, Rhode Island

http://www.stilburnin.com

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  Oldenginerod Mon Dec 04, 2017 3:05 pm

Obviously the blades must flip flop from a positive attitude to a negative attitude once the engine cuts out so it can autorotate. Just can't quite get my head around how that happens.
Oldenginerod
Oldenginerod
Top Poster
Top Poster

Posts : 3969
Join date : 2012-06-15
Age : 61
Location : Drouin, Victoria

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  dckrsn Mon Dec 04, 2017 7:59 pm

Rod, I tried to photograph the business end of a blade that
would make sense, but no good. Anyway, the blade rocks
back and forth on the mount wire. There is also a weight
on the blade end to help maintain the proper pitch in climb.
I'll try to photograph again tomorrow, in daylight.
Bob
dckrsn
dckrsn
Diamond Member
Diamond Member

Posts : 2750
Join date : 2010-10-21
Age : 71
Location : Long Island, New York

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  Oldenginerod Mon Dec 04, 2017 11:55 pm

dckrsn wrote:Rod, I tried to photograph the business end of a blade that
would make sense, but no good. Anyway, the blade rocks
back and forth on the mount wire. There is also a weight
on the blade end to help maintain the proper pitch in climb.
I'll try to photograph again tomorrow, in daylight.
Bob

Thanks Bob. I'd sort of figured out that the blade must rock once the engine cuts out to give it the opposite attitude to when climbing. Otherwise it would need to change direction of rotation to auto-rotate for the decent. Without one in front of me, I just can't figure out how the counter-weight makes it swing from one angle to the other.
Oldenginerod
Oldenginerod
Top Poster
Top Poster

Posts : 3969
Join date : 2012-06-15
Age : 61
Location : Drouin, Victoria

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  batjac Mon Dec 25, 2017 12:06 am

Mauricio, here is a design that was just posted on Outerzone:

Cox Skycopter Free Flight Helicopter 9590

https://outerzone.co.uk/plan_details.asp?ID=9590


The Breaking News Mark
batjac
batjac
Diamond Member
Diamond Member

2022 Supporter

2023 Supporter

Posts : 2335
Join date : 2013-05-22
Age : 61
Location : Broken Arrow, OK, USA

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  MauricioB Fri Dec 29, 2017 12:18 am

batjac wrote:Mauricio, here is a design that was just posted on Outerzone
The Breaking News Mark

Thank you very much for providing this new information, I am still grouping information.
Thanks again! Thumbs Up
MauricioB
MauricioB
Top Poster
Top Poster

Posts : 3566
Join date : 2016-02-16
Age : 53
Location : ARG

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  MauricioB Fri Dec 29, 2017 12:28 am

MauricioB wrote:


Friends, is my perception wrong or do the big shovels spin with a negative step Shocked ??????
MauricioB
MauricioB
Top Poster
Top Poster

Posts : 3566
Join date : 2016-02-16
Age : 53
Location : ARG

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  getback Fri Dec 29, 2017 7:13 am

If you look close at the beginning he is using a starter spring and when rotors start turning they are going in the same direction / as the body does too when turned loose . Cold
getback
getback
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 10114
Join date : 2013-01-18
Age : 66
Location : julian , NC

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  batjac Wed Jan 24, 2018 1:22 am

And another one just went up...

https://outerzone.co.uk/plan_details.asp?ID=9709

Cox Skycopter Free Flight Helicopter 9709

The Update Mark
batjac
batjac
Diamond Member
Diamond Member

2022 Supporter

2023 Supporter

Posts : 2335
Join date : 2013-05-22
Age : 61
Location : Broken Arrow, OK, USA

Back to top Go down

Thinking Re: Cox Skycopter Free Flight Helicopter

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top

Cox Engines Forum  :: Models and Modeling :: Models and Modeling

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