HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old May 04, 2009, 11:22 AM
Registered User
Des Moines, Iowa
Joined Apr 2003
185 Posts
Discussion
Help with a power system for a Super Falcon 120

I am going to convert a Super Falcon 120 to an electric pusher config. I have seen some threads on EDF but nothing really showed up in a search for a basic electric conversion.

I have narrowed it down to two likely power systems but I want to get some feedback on which would be the better path. I am not sure if I should go for more RPMs and a smaller prop or a little bigger diameter prop and lower RPMs. I think conventional wisdom is larger props are better from an efficiency viwpoint.

I expect to be in the 17-18lbs range RTF

The two power systems I am looking at are 10S based.

System 1:

Scorpion 4035-380 swinging a 12.5x10
Amps 69
Watts in 2400 and change
RPM 12700
Pitch speed 120mph
Static thrust 300 oz

System 2:

Scorpion 4035-460 swinging a 11x9
Amps 68
Watts in 2380
RPM 15500
Pitch Speed 133mph
Static thrust 285oz

I know these are "calculated" not measured performance numbers but with that in mind which way would you go? Most discussions seem to be based around 3d style power systems. I am looking for something geared to a decent speed in a sport style plane. I am going to use the Falcon as a "jet" trainer with retracts and flaps.
dlesnick is offline Find More Posts by dlesnick
Reply With Quote
Sign up now
to remove ads between posts
Old May 04, 2009, 10:51 PM
Registered User
USA, FL, Winter Haven
Joined May 2006
507 Posts
Judging by the numbers I doubt that you would be able to tell a difference between the 2 setups. They are very similar, so do you want 15oz more thrust or 13mph pitch speed ?
Guess that's the question hehe

Good Luck,

Tim
Merlin1205 is offline Find More Posts by Merlin1205
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion HELP puting together power system for skateboard, plz Nek Power Systems 8 Jul 18, 2008 11:36 PM
Help! Power system for a Super Sportster 40 MkII methos Power Systems 6 Mar 09, 2008 09:12 AM
Help needed selecting power system for F1A conversion. Lancer31 Electric Sailplanes 0 Jun 20, 2005 10:19 AM
SOme help with a power system pequeajim Power Systems 8 Mar 05, 2004 09:37 PM
Help with GWS power system DavidMC Scratchbuilt Indoor and Micro Models 1 Jan 06, 2004 10:52 AM