Lama 4 just won't fly - RC Groups
Thread Tools
Oct 24, 2012, 11:43 AM
Registered User

Lama 4 just won't fly

I've been flying my Lama 4 for three years but lately it stopped producing enough thrust to fly more than a few inches above the ground. I replaced the blades, battery, speed controller and motors. I also tried repitching the blades but it just doesn't want to fly anymore.

Is it possible that the speed controller is limiting the RPM for some reason? Any suggestions would be appreciated.

Sign up now
to remove ads between posts
Oct 24, 2012, 12:07 PM
Cranky old fart
Balr14's Avatar
I would be testing battery voltage. I realize you said you replaced it, but you have start the process of elimination somewhere and the battery is the easiest thing to address. Check voltage before and after an attempted flight. The next obvious thing is gear slippage and pinion clearance.
Oct 24, 2012, 01:45 PM
Fly Runaway Fans
Over 3 years with average handling, strands within the power wire break and the resistance goes up. This can be measured but it's awkward, have to measure voltage drop under full load (blades and all). Try this instead: Run it "a foot off the ground" or whatever it will do, for one minute. Then feel the wire where you plug in the battery. If it's very hot, there's your problem, replace the wire. Soldering will be necessary.
Oct 26, 2012, 03:41 AM
Registered User
I had this problem with an s033g. I put a heavy bar through the skids , clipped a voltmeter to the motor connection(motor end) and checked the voltage under full load. This ruled out any pcb/ wiring probs.Changed the motors with exactly the same ones from syma and it was like a new heli again. Good luck!

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion um t-28 won't fly straight dge Beginner Training Area (Aircraft-Electric) 3 Jul 07, 2012 11:13 AM
Question Esky Lama V4 won't fly: Red & Green flashing lights seim Micro Helis 25 Feb 27, 2010 12:59 PM
Help! My Esky Lama V4 won't fly! terjeau Coaxial Helicopters 23 May 11, 2009 06:03 AM
Discussion Lama v3 won't lift off, just tips over? seedyeh Coaxial Helicopters 27 Oct 08, 2007 03:05 AM
GWS beaver, it just won't fly.... TeamTEOR GWS (Grand Wing Servo) 27 Sep 14, 2003 11:52 AM