I took some on board video from my EZ* on the ATC2K. Merry Christmas!
Winter Video
Wednesday, December 24, 2008
Sunday, December 7, 2008
Motor Problems
Well, I think I finally figured out what was wrong with my EZ* (which is currently at 26.5 oz flight weight with 2200mAh). It has been glitching and motor cutting out (along with the whole servos and everything). It was very intermittent and happened for only brief periods of time, but it was getting worse and when it made all the controls go unresponsive, it was very bad. So, I swapped ESC's out to the new Turnigy 40A Sentry ESC I have for putting into my Typhoon...no difference. Swapped my Hitec Mini 6s out for the Neutron 6s dual conversion from my Typhoon (which has NOT been having any problems in the same flying area). That "seemed" liked it fixed it (at least no glitches in the quick test flight), but the motor also suddenly quit working too. Glided it in and checked it, and the motor was boiling hot. And the foam around it was melting, so now, it is very loose and sloppy in the mount. Pulled it all out and started looking, and one of the wires had melted through the insulation and it looked like it was shorting out to the case of the motor. It was also very rough on the motor shaft spin, so I put a little 3-in-1 oil in it. Seems a lot better now. On top of all of that, I have been running my prop blade backwards. It was pushing correctly, but I didn't have the right leading edge going the way I needed. Hope that hasn't been contributing to it getting super hot and not doing a super great job pushing (seemed like it should have a little more thrust).
Friday, December 5, 2008
Aerial Video Footage
Got my first aerial video footage with my ATC2K helmet cam from Oregon Scientific. Spent some time and edited the footage down to about half of what was there originally. I need to learn to fly smoother when taking video, because the erratic motion of large control surface movements really makes it tough to watch. It would be cool to find a way to integrate the on screen display with current, heading, GPS, altitude, speed and temp all into this on just the helmet cam, even without transmitting full FPV, but I guess that will have to wait.
I'm still having problems with the glitches, and I'm wondering if it is the BEC on the ESC not able to handle the current (it is only rated at 2A at 5v). I have a new 40A ESC that I'm going to use for my new out runner motor on my Typhoon, but not using right now that I may put on (it has 3A capability). If that doesn't fix it, then I'll have to start swapping out the receiver and stuff. I'm going to try it one component at a time.
I'm still having problems with the glitches, and I'm wondering if it is the BEC on the ESC not able to handle the current (it is only rated at 2A at 5v). I have a new 40A ESC that I'm going to use for my new out runner motor on my Typhoon, but not using right now that I may put on (it has 3A capability). If that doesn't fix it, then I'll have to start swapping out the receiver and stuff. I'm going to try it one component at a time.
Sunday, November 30, 2008
Aileron Easy Star Modificaiton
Put some pictures up below of my aileron mod to my easy star. I put carbon fiber rods in the foam to help give it more stiffness. Also, just used simple packing tape for the hinges after cutting 45-degree slices out of the bottom of each mating surface. Then, used Hitec HS-55 micro servos in the wing. Had to use some extensions for the cords (should have probably put it in closer and might have been able to avoid having to use extensions). I only had 24" ones right now, but I think 6" ones would be just fine. I'll swap them out when I get the chance.
Typhoon 3D
Monday, November 24, 2008
Dual/Triple Rates and Expo
There is a pretty good web page that describes how exponential rates work (the negative vs. positive expo on JR vs. Futaba sort of messes me up too). I also put together a quick Control Rates XLS spread sheet to graphically demonstrate how the control surface should move with various rates and expo settings for a given stick movement and to help myself visualize how the response works for setting targets on my Futaba 7CAP. I am thinking about trying to even do a 3D plot to incorporate subtle p-mixing, but that is probably overkill. For now, this allows me to visualize what I want to do to moderate response around center, but still get full range response for 3D flight. The file currently has a setting for user settings, demonstrating how to limit the beginner's tendancy to "over control", but still deliver the same initial sensitivity/response with 65% rates and 70% positive expo.
Saturday, November 15, 2008
Easy Star
I just built my Easy Star kit and got it all setup. Here are some pics with the HXT 2835 2700kV brushless motor installed, and a Turnigy Sentry 25A BESC with a Zippy 2200mAh 3S1P LiPo. I put the BESC on the outside to try to help keep the heat down. The HXT motor sure seems to run hot (hope it isn't a dud). I still have to pop the Hitec Neutron 6S Rx with HS81 servos in and get the push rod throws adjusted as well as make a final CG measurement. Hopefully I can maiden her tomorrow. Found a good EZ* Fan Site page too.
Sunday, November 9, 2008
Wild Hawk
Saturday, November 1, 2008
Cheaper...Wild Hawk
Of course, once Harbor Freight starts carrying these, you can begin considering them "disposable". The Wild Hawk is a knock off clone cheap version of the EPP foam Easy Star. Super forgiving, very cheap, and easy to fly...got to see if our local Harbor Freight has one.
Check out the Wild Hawk.
Check out the Wild Hawk.
Crash...Thrice!
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