Brushed/Brushless motors, speed controls, gear drives Discuss all aspects of brushless motors, brushed motors, speed controls (ESC's), gear drives and propellers in this forum.

Help! Newbie here

Old 08-08-2005, 12:53 PM
Thread Starter
My Feedback: (4)
Join Date: Apr 2004
Location: Zeeland, MI
Posts: 70
Likes: 0
Received 0 Likes on 0 Posts
Default Help! Newbie here

I'm fairly new to electric flight and I had a problem today while flying my Alpha Corsair. I'm running an Axi 2808/20 brushless motor with a Jeti Advance 30 ESC. Upon switching over to a Kokam 3 cell, 11.1V, 2000 mAh LiPo pack, the power would cut out in mid flight, forcing me to land. I previously had a 2-cell Kokam 7.4 volt pack in it and did not experience this problem. I'm running a 3 blade 9x6 prop.
The problem appears to be with the higher voltage battery. Can someone shed some light on this for me and explain why I'm experiencing this problem.

Old 08-08-2005, 11:53 PM
Senior Member
Spaceclam's Avatar
Join Date: Apr 2003
Location: chatsworth, CA
Posts: 4,643
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Help! Newbie here

with a higher voltage, if you are using the same prop, you will draw significantly more current. this means higher load on the battery, and may trigger the auto cutoff prematurely because the voltage under the heavy load is so low. reduce your prop size a little bit and see if it helps.
Old 08-09-2005, 12:56 AM
Senior Member
Join Date: Dec 2004
Location: Naersnes, NORWAY
Posts: 912
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Help! Newbie here

As spaceclam said: propably too heavy load for your batteries. A 9x6 giver you 25-27Amp load on 3S. Try a 8x4 or 8x5...

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 - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.