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For the latest info on Temporary Flight Restrictions in you area visit the FAA TFR Site here.

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Next Club Meeting Date

Club meetings are held the First Sunday of each month at 2:00pm at the field unless otherwise noted here. Our next scheduled meeting will be held March 3, 2019 at the field. Among the usual business we will update the progress and news around the Blackhall Studios / Dekalb county land swap. Join us to learn about these exciting new developments. 


We realize that this is imposing a hardship on all of the active members, and for that, we apologize.  We felt it in the best interest of the club as this should give us enough funds to repair the cracks in the runway surface.  We are certain that the two weeks will go by quickly, and when over it should be perfect flying weather.  Consider spending this time to build some new planes, or get your proficiency up in the simulator.

In summary, please do not attempt to use the field from the 25th onward.  Note that the gate code will be changed during this period and the studio and the club officers will be the only ones with the code.  Once the use of the field is complete, I will send out another email.

NOTE: MEMBERS: DUES ARE DUE.  If you have already paid, please let the new treasurer know: Contact [email protected]

If you have not yet paid 2019 dues, please click the paypal link on the left, provide your current AMA membership number and membership level. 

LiPo Fire PDF Print E-mail
Written by Alex Mitchell   
Monday, 27 April 2009 12:27

This article is intended as a reality check for safety with LiPo batteries as well as high speed moving parts. 

On Saturday the 25th we had a pretty good turn out for Heli Flyers at the field on the southeast heli area. Everything was going nicely for weather and the lack of crashes that day... That is until Rob began to spool up his Trex 600 electric heli. Rob went out to the flight line and started to spool up. He then went into Idle up mode which I assume is around a 2000 RPM head speed on a Trex 600. Approximately 2 seconds into idle up 1 the heli disintegrated.

Trex 600 WreckThe picture to the left is the mangled wreckage of Rob's Trex. It literally came apart like a bomb went off inside the canopy. After looking for 45 minutes or so we were able to identify that this was from a blade grip failure. The blade was found over 75 feet away in perfect tact with the bolt and nut still in the blade root. We made rough calculations that the blade was moving somewhere over 250mph and ejected with roughly 300lbs of force. Luckily it went away from Rob at the flight station and away from everyone sitting at the tables. We are thankful that Rob and everyone on site was OK.

LiPo Fire

I approached the battery long before we found the blade that had ejected. I picked it up and saw what appeared to be a pinhole in the battery. Upon closer inspection I noticed it had just started to smoke. I dropped the battery like a hot potato and yelled "We've got a smoker!". I was very aware that LiPo batteries can explode very violently. We all managed to back off. The smoke accelerated and the pack started to hiss, then spew fire like a torch. It burned for at least 15 minutes as it went from cell to cell igniting each individually. We found that the fire extinguishers were nearly empty so we waited for it to burn down a bit since the ground was wet from earlier rains in the week preceding. After it burned out I put dirt over it to suffocate the oxygen then eventually poured water over it. The water actually boiled and evaporated from the dirt after the pack was extinguished for about 15 minutes. 

After the FireThis is What the pack looked like before I threw dirt on it. It was roughly 4 times its original size. The moral of this story is to beware of LiPos. Although our Helis and Planes look like toys, they can be quite dangerous and should not be treated as toys. Remember to store your batteries in a fire proof container as well as charging them in a fireproof container. Inspect your aircraft regularly for fatigued or worn parts and replace them.

I have embedded a video below showing several LiPo explosions as well as a fireproof charging bag with LiPos eploding in the bag. Watch it if you have never seen a LiPo explode. It will give you a new respect for the power a LiPo can unleash.

Be smart and be safe,