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

Help electric motor size for 46 size trainer

Reply

Old 08-01-2013, 08:53 AM
  #1  
batdog
Senior Member
Thread Starter
My Feedback: (1)
 
Join Date: Dec 2009
Location: Burnsville , NC
Posts: 167
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Help electric motor size for 46 size trainer

Can someone help determine electric motor and esc size for a balsa 46 size high wing trainer that weighs 5 - 6 lbs. Thanks batdog
batdog is offline  
Reply With Quote
Old 08-10-2013, 03:06 AM
  #2  
yel914
 
yel914's Avatar
 
Join Date: May 2005
Location: SALT LAKE CITY, UT
Posts: 742
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I converted my Sig LT40 from glow to electric this year. I have an Eflite Power 46 electric motor and a Castle Creations 75 amp ESC. The ESC is overkill as a 60 amp would do fine. I was amazed to fly this plane on electric power. It's about as perfect as I could hope for. This combo has more power than I need, but I also use the plane for float flying. Hope that helps.
yel914 is offline  
Reply With Quote
Old 08-10-2013, 01:42 PM
  #3  
Campy
Senior Member
My Feedback: (1)
 
Campy's Avatar
 
Join Date: Jan 2002
Location: Baltic, CT
Posts: 3,613
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

You need to determine the weight of the plane WITHOUT the engine in it. Then determine the weight of the motor you plan to use (how many oz) AND the weight of the battery. Add this to the weight of the plane. Now you have a weight you can work with.
Figure you will need 100 - 125 watts of power per pound of weight for a 40 size trainer. MANY motor suppliers provide a "wattage" based on a particular size/pitch prop and size of the lipo (3s, 4s, etc.) If in doubt look at the HK site. Almost all of the motors listed there provide a "wattage".

Hope this helps.
Campy is offline  
Reply With Quote
Old 08-23-2013, 04:54 AM
  #4  
bassmanh
My Feedback: (5)
 
Join Date: Jul 2002
Location: fond du lac, WI
Posts: 796
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

bat,

on a trainer that size its an easy choice any .46 size electric motor putting out around 800 watts or above would work well....

here is a good example = http://www.hobbypartz.com/96m605-big...020-670kv.html running this on a 4s 4000 mah or so battery and around a 13x6 prop would fly your trainer nicely with flight times around 10 minutes.....

best thing to do tho is if your going to get into electrics is get yourself a good watt meter so you can test out different set ups to see what works best.


bass
bassmanh 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