Page Index Toggle Pages: 1 Send TopicPrint
Normal Topic Contra-Rotating Propellers for Rubber Power (Read 395 times)
Sky9pilot
Administrator
*****
Offline


Stick & Tissue

Posts: 11743
Location: Kelso, WA 98626 USA
Joined: Jan 9th, 2010
Re: Contra-Rotating Propellers for Rubber Power
Reply #4 - Feb 11th, 2020 at 7:31pm
Print Post  
If you can do the CAD you have the option of the suggested Program files, your programs (mine's TurboCad) but also offers DWG,DXF,etc. when you save the one you're working on. You might want to check with your friend and see what his printer requires. 
Sky9pilot
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
Back to top
IP Logged
 
Rubber Rookie
New Member
*
Offline


Stick & Tissue

Posts: 9
Location: Fayetteville, Arkansas
Joined: Aug 15th, 2008
Re: Contra-Rotating Propellers for Rubber Power
Reply #3 - Feb 11th, 2020 at 3:12pm
Print Post  
I can probably do the CAD.  Not sure I can get it saved in the proper format.  One of my co-workers has a 3D printer.  I might just have to ask him what I need to do.
  

This message contains 100% recycled electrons
Back to top
 
IP Logged
 
Sky9pilot
Administrator
*****
Offline


Stick & Tissue

Posts: 11743
Location: Kelso, WA 98626 USA
Joined: Jan 9th, 2010
Re: Contra-Rotating Propellers for Rubber Power
Reply #2 - Feb 11th, 2020 at 12:30pm
Print Post  
I'm sure that would be possible.  It would require a CAD or .DWG, .DXF, or similar drawing file of each of the components inorder to print them.  I'm sure someone out there in cyber land can do this. It's beyond my capabilities at the present.
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
Back to top
IP Logged
 
Rubber Rookie
New Member
*
Offline


Stick & Tissue

Posts: 9
Location: Fayetteville, Arkansas
Joined: Aug 15th, 2008
Re: Contra-Rotating Propellers for Rubber Power
Reply #1 - Feb 11th, 2020 at 9:59am
Print Post  
I've been wondering if anyone has tried to 3D print all the parts needed for a counter-rotating prop.  Something like what Don Ross shows in his book.  I don't have a 3D printer, so I don't know if this is possible.
  

This message contains 100% recycled electrons
Back to top
 
IP Logged
 
Sky9pilot
Administrator
*****
Offline


Stick & Tissue

Posts: 11743
Location: Kelso, WA 98626 USA
Joined: Jan 9th, 2010
Contra-Rotating Propellers for Rubber Power
Sep 13th, 2019 at 6:13pm
Print Post  
Prosper (modeler on HPA) used this system on his Martin-Baker MB-V 21 and I drew this up from his photos on HPA.  It's a viable option for anyone building a contr-rotating prop aircraft...
Click Here for his build thread
Sky9pilot
  

contra_rotating_props_rubber.PDF ( 724 KB | 27 Downloads )

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
Back to top
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint