Lipo Battery Health

Lipo battery health can be a little mysterious, and seems unpredictable.  I had some large ones die after on me recently after about 40 cycles, much too soon considering that they had not been severely mistreated and were a good brand.  I suspect the reason they went bad prematurely was because I tend to charge batteries while they are fairly cold to the maximum voltage and then allow them to get warmer after they are fully charged.  The temperature difference between my charging area and my car 50 degrees or more.  It is common knowledge that temperature will affect battery output capacity during the flying phase, but you don’t hear very much about how temperature affects energy input capacity during the charging phase, or how the maximum safe charge level is affected by a battery temperature that has changed. I know there are some higher end chargers that can compensate for the ambient temperature during the charge, but I don’t have one.  From now on, I think I will try to warm up my lipo batteries before charging them, then not let them get any warmer on the way to the field.  Hopefully that will make them last longer.

If you want to dig deep into your Lipo battery’s health an article called, “What’s Really Going On Inside A Dying Lithium Battery” as well as this video about tracking your battery resistance may help remove some of the mystery.

2012 Tillamook Fun Fly was June 9th

The June 9th Fun Fly in Tillamook went very well.  We enjoyed flights of all types of aircraft; gliders, quadcopters, realistic scale, giant scale, pattern, stunters, 3-d helicopters, warbirds, and a variety of electric and fueled sport planes. Thankfully, the bad weather cleared up overnight before the event started and the morning dawned with just cool temps and cloudiness that cleared out nicely during the day.  The event featured some impressive displays of 3D acrobatic flying of large nitro helicopters by two Heli Direct sponsored pilots: Steve Tomlinson and Matt Mallory.  They, together with Eric Manning, put on quit a show with giant scale IMAC type stunt planes as well. We had lots of visiting spectators and a few out of town visiting pilots.  We sold enough burgers, snacks and  coffee that we covered our event expenses and even might have earned few bucks for the club.  Stan Ray was the lucky winner of the $30 gift certificate door prize.  There was lots of hot and heavy flying, even so, there were hardly any crashes only a couple of minor “hard landing”  type incidents with no gory showers of balsa and foam.   My profile plane came close to trouble after my fuel tank fell off mid-flight and dangled underneath, hanging by just a vent hose .  Paul crunched the nose gear a little bit on his 1/4 scale Cessna due to an engine flame out.   Steve made a big divot in the grass with his 700 size heli blades during a super low inverted hover.  Bill’s Cessna suffered a little nose damage. A few visitors tried their hand at a training flight. Everyone had a good time.

Thanks to those of you who donated your efforts, supplies or funds to help make this event enjoyable for everyone. Steve gathered the food, drinks, prizes and painted tables, Stan got the driveway graveled, Ken donated the rental of a generator, Pete emailed members, took photographs, registered pilots and collected money, Gary painted tables, Robert cooked food and did training flights, Stuart washed equipment benches, mowed, trimmed and emailed club invitations.  Several other members helped with other tasks such as setting up the canopy, making coffee, greeting visitors, etc.  Wives and girlfriends helped as well.

Quadcopter Video of the 2012 NCRCM Fun Fly Flightline

The above  video was filmed by Gary Cox from his quadcopter which produced very impressive results.  It looks like stablized quads like Gary’s are the best choice for up close and stable video platforms.

New Photos!

Pete’s photos of the fun fly are now posted in the Event photo gallery.

 

Aviation themed videos

Here are some videos with an aviation theme from the web site wimp.com.

Amazing RC bird.
C-130J “Super” Hercules at Paris Air Show 2011
Impressive helicopter landing in rough seas.
Chinook helicopter on a recovery mission.
Recent riots in Warsaw filmed with an RC helicopter.
Impressive helicopter flying.
Attaching a camera to a helicopter rotor: A distorted world view.
RC Helicopter Skills: Wall landing.
$1900 camera and an RC helicopter create this amazing video.
Helicopter carries a plane.
Australian helicopter cowboys.
RC helicopter tricks.
Over excitement over paper airplanes, watch till end.
Airplane truck drop.
Discovery’s space shuttle launch viewed from an airplane.
A typical day of air traffic: Each dot represents an airplane.
Brazil: Collection of RC airplane’s flights in FPV.
Small aircraft’s engine dies, pilot epically lands airplane.
Recently Declassified: 1945 airplane gun camera footage from Japan.
Lufthansa: Pillow fight breaks out on airplane.
Matt Hall’s incredible airplane recovery.
Beautiful airplane landing.
Behind the scenes at Boeing: Airplane made in two minutes.
Airplane empties water tank.
RC indoor airplane aerobatics.
Airplane to airplane skydive.

You also might enjoy this humorous aviation theme video collection on  aviationhumor.net.

New videos added to gallery

 

Garibaldi aerial video
Aerial video of Garibaldi Oregon

I added a couple new videos in the video gallery. One features an aerial camera view of the town of Garibaldi with views of the old mill smoke stack, the marina and Tillamook Bay. The other shows Bob’s Corsair making several low passes.  There are also a few more old time photos in Photo Gallery 3.

The club has its own channel in YouTube now called ncrcmtube.  Some guy from Brazil had already claimed a YouTube channel named “ncrcm”. I will put the new club videos in the ncrcmtube channel from now on, instead of in the old shoffmantube channel.  I can’t move the videos from one channel into the other but can link them with play lists.  If you make videos for the club’s channel I can  help you upload them or maybe just give you the keys.

3-D helicopter flight Steve Tomlinson

  Click photo to watch video. 
 Video of Steve flying 3-D with T-Rex 600 N helicopter
Click photo to watch the You Tube video

A new video was posted on You Tube of Steve flying 3-D with his T-Rex 60oN .  It was filmed 10-27-11.   At about the 4 minute 50 seconds mark you can hear the engine start to bog down and then flame out over the far end of the runway, but he saves it with a real nice auto.  I might try to film it again with better camera settings after Steve gets the fuel problem fixed.  Will try setting camera for shutter priority, adding more zoom, maybe a different shooting angle and double checking that the auto focus stays turned off.