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

North Star Conversion

Reply

Old 04-26-2004, 11:17 AM
  #1  
staggerwing
Senior Member
Thread Starter
My Feedback: (5)
 
staggerwing's Avatar
 
Join Date: Dec 2001
Location: Dun Rovin Ranch, WY
Posts: 773
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default North Star Conversion

Has anyone converted a Balsa USA North Star seaplane from glow to electric? It would really seem to solve the change of CG problem that you encounter as you use up fuel in the glow version.

If so, what did you use and what are the results?
staggerwing is offline  
Reply With Quote
Old 04-26-2004, 01:55 PM
  #2  
Greg Covey
Senior Member
 
Greg Covey's Avatar
 
Join Date: May 2003
Location: Rochester, NY
Posts: 5,710
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: North Star Conversion

Yes, a local R/Cer used the same setup as my Mega-power Projecti wing. I'll query him about the wingspan as he may have scaled it a bit.
Greg Covey is offline  
Reply With Quote
Old 04-26-2004, 07:55 PM
  #3  
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: North Star Conversion

Greg, that Northstar is definitely a scaled-down version. The normal model calls for a .46 2-stroke glow.

The main issue with the Northstar is going to be prop clearance. We can't use the usual trick of running a bigger prop at a more efficient RPM, because you get much bigger than a 10" prop, and you're chewing pieces out of the fuselage... This will require some thought.
Matt Kirsch is offline  
Reply With Quote
Old 04-27-2004, 08:12 AM
  #4  
Greg Covey
Senior Member
 
Greg Covey's Avatar
 
Join Date: May 2003
Location: Rochester, NY
Posts: 5,710
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: North Star Conversion

Here is a picture of both North Stars. The smaller electric one is about 60% and uses a Mega 16/15/3 motor spinning a Graupner 5.5x4.5 CAM Speed prop.

A possible choice for the full size Balsa USA version would be an AXI 4120 outrunner. You could reduce the size of the prop and increase the cell count to add RPMs and current until you reached 40amps.
Attached Thumbnails Click image for larger version

Name:	Jh15517.jpg
Views:	12
Size:	404.7 KB
ID:	126776  
Greg Covey 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