New Products Flash Sale
Thread Tools
Old Mar 02, 2015, 02:12 AM
cd5 is offline
cd5
Find More Posts by cd5
cd5
Registered User
Joined Apr 2007
56 Posts
Discussion
Propeller properties and selection

Hi guys
I was wondering how people select there props.
At the moment i run 20x8.
Would a 21x7 perform the same as a 20x8.
And how does the length vs pitch effect flight performance characteuristics.
I m assuming one is for Torque and one for top speed but am not sure which is which.
So if any one is versed on propeller theory for dummies, id appreciate being filled in.
Thanks
cd5 is offline Find More Posts by cd5
Reply With Quote
Sign up now
to remove ads between posts
Old Mar 02, 2015, 06:03 AM
Gregertman is online now
Find More Posts by Gregertman
Registered User
United States, IL, Glenwood
Joined Nov 2013
1,696 Posts
For best results I would ask the same question in the tread power systems for Extreme Flight fanatics. Also include what motor you have and if its stock mufflers , Pitts muffler , piped , or canister . And include your intended type of flying . Aka Imac ,low and slow 3D , extreme aerobatics, or general sport flying. It doesn't matter if you don't have an Extreme Flight plane or not they are a good bunch of guys over there and they (Aeroplayin) will help you out. Also include the wt of your plane and what plane it actually is. Good luck.
Gregertman is online now Find More Posts by Gregertman
Last edited by Gregertman; Mar 02, 2015 at 02:55 PM.
Reply With Quote
Old Mar 02, 2015, 11:30 AM
Xpress.. is offline
Find More Posts by Xpress..
Hitec RCD CSR
Xpress..'s Avatar
United States, CA, Alpine
Joined Oct 2007
22,023 Posts
Lots of factors are involved here. We would need to know exactly what motor/engine you're running and the preferred style of flying.
Xpress.. is offline Find More Posts by Xpress..
Reply With Quote


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Propeller selection help!!!!! and rudder selection Shannon87 Racing Boats - Electric 16 Aug 31, 2010 02:29 AM
Discussion Book on R/C propeller design and selection jhark37 Electric Plane Talk 7 Sep 20, 2008 04:54 PM
Discussion Propeller selection and a planes frontal cross section Jim Connell Power Systems 5 May 08, 2007 04:21 PM
Discussion Propeller selection julianb Competition Aerobatics 10 Apr 16, 2006 03:04 PM
Question GWS F4U Corsair: Propeller selection advice boltor GWS (Grand Wing Servo) 8 Jan 21, 2006 12:21 AM