Glow to Electric Conversions Discuss glow/gas conversion to electric here.

Funtana power and setup question

Reply

Old 12-05-2004, 11:48 PM
  #1  
Twin Cessna
Thread Starter
My Feedback: (3)
 
Twin Cessna's Avatar
 
Join Date: Feb 2004
Location: Motor City, MI
Posts: 23
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Funtana power and setup question

I Have a Astro 840G brushless geared power system and two TP-6000 3S3P batteries that I am setting up as a 6S3P which should have around 900 watts of power for the Funtana 40.
I would like to know from the experts here if this motor will work ok in this bird and any assembly tips would be great also. I do not plan on extreme 3-D flying, I just want a good flyer that does more than fly around in circles and also lets me the play around with some 3-D.
Thanks for the help
Twin Cessna is offline  
Reply With Quote
Old 12-06-2004, 12:52 PM
  #2  
Matt Kirsch
My Feedback: (21)
 
Matt Kirsch's Avatar
 
Join Date: Jul 2002
Location: Spencerport, NY
Posts: 7,349
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Funtana power and setup question

900 Watts from a 6S LiPoly is roughly 45 Amps. Sound right? Will the 3P handle 45 Amps?

The actual motor does not matter much, as long as it can handle the Volts and Amps you want to put through it. According to the specifications posted on www.astroflight.com for this motor, it'll handle the load, but you'll be pushing its limits.

The application charts they provide list a 14x7 prop with 6S LiPoly drawing in the mid 30's for Amps, IIRC. The next thing they show is a 15x10, but only with 4S and 5S LiPoly. From that, we know your ideal prop is somwhere in between. My shoot-from-the-hip guess would be a 15x7 is the prop you want.

Is this the Funtana .40 or the .90? This setup will be okay on a .90-size, but not really 3D, and utterly ballistic on the .40-size.
Matt Kirsch is offline  
Reply With Quote
Old 12-06-2004, 07:37 PM
  #3  
Twin Cessna
Thread Starter
My Feedback: (3)
 
Twin Cessna's Avatar
 
Join Date: Feb 2004
Location: Motor City, MI
Posts: 23
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Funtana power and setup question

Matt, I was thinking about flying the 40 size around 1/3 to 1/2 throttle and have long flying times. But if I need to get the airspeed up fast I can.
I thought about using it in a 90 size plane but I do not like the idea of a plane that is a dog on power. Thanks for the prop size info.
Twin Cessna is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service