Electric Training If you are new to electric learn more about them here or ask questions.

need phd in to solve problems

Reply

Old 10-27-2005, 12:53 PM
  #1  
hasbeen
Member
Thread Starter
 
Join Date: Jan 2003
Location: marcella, AR
Posts: 31
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default need phd in to solve problems

i see several post here about slow sticks. i am having an on going problem with mine, i hope someone out there can help.
the problem;
the stock motor cut off after a few seconds of full throttle either in the air or on the bench. here is what i have tried doing to correct the problem. tried a new motor and gearbox with the same prop, tried new lipo battery packs, 1200ma and 1500ma both 7.4 volts. i even tried putting 2-1200ma in parallel for more current capacity. put in a new 20 amp speed controller and it still cuts off after a few seconds.
with the throttle at almost full, the motor is pulling right at 6 amps, the pack voltage is around 6.5 and watts are 36 to 38. nothing is hot, motor or speed controller. the radio a jr 8103 and is/ was new at the start of this adventure. the batteries are charged with a triton charger.
any one with any other ideas?
hasbeen is offline  
Reply With Quote
Old 10-27-2005, 07:19 PM
  #2  
smokingwreckage
Senior Member
 
Join Date: Jul 2005
Location: , TX
Posts: 242
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: need phd in to solve problems

I don't understand how you can replace an entire power system and still have the same problem, unless some of the parts don't match.
smokingwreckage is offline  
Reply With Quote
Old 10-27-2005, 07:58 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: need phd in to solve problems

If the voltage is down to 6.5 Volts at only 6 Amps, something is very wrong. These batteries should be holding at least 7.5 Volts if they're any good...

Where did these batteries come from? What are their C ratings? I'd go as far as putting money on your problem being related to weak batteries.
Matt Kirsch 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