450 Starts out fine then gets "jumpy"  
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All Forums >> RC Helicopters >> Electric RC Helis >> T-Rex heli >> 450 Starts out fine then gets "jumpy"
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450 Starts out fine then gets "jumpy" - 9/25/2007 1:46:25 AM   
freckyjsn


 

Posts: 19
Joined: 7/11/2007
From: Baldwin, MD, USA
Status: offline 		My 450 starts out nice, easy to hover, but after 30 seconds or so gets "jumpy", as if I was banging the throttle up and down real fast. But, I was only working the cyclic. Any ideas? ESC problem maybe? I did just put a new one-way bearing and main gear in, but it flew great for the 1st 5 mins or so, then started this.
       Post #: 1

RE: 450 Starts out fine then gets "jumpy" - 9/25/2007 5:33:46 PM   
rlsloan


 

Posts: 145
Joined: 8/5/2006
From: escondido, CA, USA
Status: offline 		Probably a battery problem. Are you using at least 15C, 2,000 MAh? It helps if you have a charger that will discharge and tell you the MAh consumed (i.e. Great Planes Triton).

(in reply to freckyjsn)
       Post #: 2

RE: 450 Starts out fine then gets "jumpy" - 9/25/2007 7:50:51 PM   
ksechler



Posts: 506
Joined: 9/19/2002
From: Frederick, MD, USA
Status: offline 		The undervoltage cut-out on the ESC could do that depending on how you have it programmed. Check the battery.

(in reply to freckyjsn)
       Post #: 3

RE: 450 Starts out fine then gets "jumpy" - 9/27/2007 2:21:07 AM   
freckyjsn


 

Posts: 19
Joined: 7/11/2007
From: Baldwin, MD, USA
Status: offline 		thanks guys. I did just recently reprogram the esc and I hadn't done that before, so I could have easily screwed it up. I also didn't think about suspecting the battery. I'll try a different battery tomorrow.

Many thanks.

(in reply to ksechler)
       Post #: 4

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All Forums >> RC Helicopters >> Electric RC Helis >> T-Rex heli >> 450 Starts out fine then gets "jumpy"
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