Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!


"Rodd-O-Gyro" - Page 3 Babe_b10
Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Mmmm... The sandwich was GOOD!
by RknRusty Yesterday at 7:37 pm

» Tachometer For Iphone
by balogh Yesterday at 5:24 pm

» Walter Musciano Scientific "Cyclone"
by GUS THE I.A. Yesterday at 5:22 pm

» Revamping my Lil Roughneck
by balogh Yesterday at 6:24 am

» Cox .01 /.02 /.05 /.09 /.15 Speed Planes
by 1/2A Nut Fri Aug 23, 2019 10:16 pm

» 0.049 reed motor efficiency
by Mark Diedrichs Fri Aug 23, 2019 4:08 pm

» Strange, this Spitfire engine has two holes
by Mark Diedrichs Fri Aug 23, 2019 3:57 pm

» 049 Black Widow tuning
by gkamysz Fri Aug 23, 2019 12:55 pm

» Abused Product Engine
by getback Fri Aug 23, 2019 6:36 am

» "Free" display case is finished
by Davenz13 Thu Aug 22, 2019 11:34 pm

Cox Engine of The Month
August-2019
fredvon4's

"Tee Dee .049"



PAST WINNERS
CEF Traveling Engine

Win This Engine!
The Traveling Prop
Gallery


"Rodd-O-Gyro" - Page 3 Empty
World of Aviation

"Rodd-O-Gyro"

Page 3 of 3 Previous  1, 2, 3

Go down

"Rodd-O-Gyro" - Page 3 Empty Re: "Rodd-O-Gyro"

Post  Brenda on Fri May 01, 2015 10:24 pm

roddie wrote:My wife (God bless her soul..) comes down into my workshop and notices the Rodd-O-Gyro for the first time.. "What's this"? she asks.. "Oh.. just something I've been working on" I reply.. She picks it up.. and exclaims.. "it's heavy"... Shocked Shocked Shocked Laughing (thanks for the words of encouragement hon..) Rolling Eyes

You out to prove bricks can fly if you apply enough thrust? lol!
Brenda
Brenda
Bronze Member
Bronze Member

Posts : 58
Join date : 2014-10-06
Age : 48

View user profile

Back to top Go down

"Rodd-O-Gyro" - Page 3 Empty Re: "Rodd-O-Gyro"

Post  roddie on Sat May 02, 2015 10:48 am

Brenda wrote:
roddie wrote:My wife (God bless her soul..) comes down into my workshop and notices the Rodd-O-Gyro for the first time.. "What's this"? she asks.. "Oh.. just something I've been working on" I reply.. She picks it up.. and exclaims.. "it's heavy"... Shocked Shocked Shocked Laughing (thanks for the words of encouragement hon..) Rolling Eyes

You out to prove bricks can fly if you apply enough thrust? lol!

Were you and I ever married? Laughing

I got some odds and ends done over the last day or two. The gear struts were just pre-bent ones I had for the previous photos.. and were 5/64" (.078") music-wire. I bent-up a new gear of 1/16" (.062") wire and cut 1/16" ply-bracing for mounting to the firewall. This will make it easier for bushing the wheels I plan to use.

"Rodd-O-Gyro" - Page 3 5-1-1510
"Rodd-O-Gyro" - Page 3 5-1-1511
"Rodd-O-Gyro" - Page 3 5-1-1512
roddie
roddie
Top Poster
Top Poster

Posts : 6594
Join date : 2013-07-17
Age : 59
Location : N. Smithfield, Rhode Island

View user profile http://www.stilburnin.com

Back to top Go down

"Rodd-O-Gyro" - Page 3 Empty Re: "Rodd-O-Gyro"

Post  Oldenginerod on Sat May 02, 2015 11:01 pm

roddie wrote:
The rotor-blades..  Huh...  Here is where I'm unsure when using conventional propellers; whether to mount them facing into the airstream.. or away from it. My thinking is; to orient them where they will be "more" resistant to turning. This may seem to be a strange approach.. but I want them to "catch" the wind at a given AOT to provide lift. I don't know whether facing toward or away will create the most resistance in a freewheeling configuration... or whether the contra-rotating props will even work. I've tried to design this thing to easily try an infinite number of configurations. It only needs to become airborne.. and I'll consider it a success.
I'll probably end-up with a tether-car!! lol!

The rotor blades are wings, so to gain the most lift they need to have the convex side facing up to provode lift.  It's not the pitch of the blade that provides lift, but the airfoil (aerofoil in my language) section as it passes through the air.  The lower side, being concave, would make better use of the airflow to be able to spin the "wing" through the air at maximum speed, providing the greatest lift from the airfoil section.  So Roddie, from your pictures, I would suggest that the rotors would be far more efficien in providing lift if turned over the other way.

Rod.
Oldenginerod
Oldenginerod
Diamond Member
Diamond Member

Posts : 2618
Join date : 2012-06-15
Age : 56
Location : Victoria, Australia

View user profile

Back to top Go down

"Rodd-O-Gyro" - Page 3 Empty re-visit

Post  roddie on Sun May 14, 2017 3:31 pm

Now that I have some parts to assemble more reed-valve engines.. I hope to get back to this project. I'd gotten a lot of it built... when I was avidly working on it last. I'm not going to fuss much further with my unproven theories. I need to try to balance it for a C/L lead-out connection.. and see if I can get it off the ground. Stay-tuned.. Laughing
roddie
roddie
Top Poster
Top Poster

Posts : 6594
Join date : 2013-07-17
Age : 59
Location : N. Smithfield, Rhode Island

View user profile http://www.stilburnin.com

Back to top Go down

"Rodd-O-Gyro" - Page 3 Empty Re: "Rodd-O-Gyro"

Post  Sponsored content


Sponsored content


Back to top Go down

Page 3 of 3 Previous  1, 2, 3

Back to top

- Similar topics

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