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Post by osidak on Mar 6, 2013 0:34:02 GMT -4
i bent the button once and after i replaced everything i was scratching my head until i realized the issue was the button
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Post by chitty024 on Mar 6, 2013 1:22:58 GMT -4
i bent the button once and after i replaced everything i was scratching my head until i realized the issue was the button did end up finding a jacked up button head....could that cause all that vibration from being off?
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Post by Chris Reibert on Mar 6, 2013 1:31:47 GMT -4
Think of how fast that sh1t is spinning. Any part off balanced even the blades and Boom Vibrations
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Post by Valkman on Mar 6, 2013 4:44:21 GMT -4
Take the blades off the main and tail. Take that buttun off. Spin the heli up and while looking directly down from above onto where the buttun hole is you will see if your head is off when it spins. If the shaft is ok then there is a problem with the head.
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Post by chitty024 on Mar 6, 2013 21:39:47 GMT -4
Spun it by hand and nothing looked like it was moving like I could see in the button. I did discover a crunchy bearing in one of the blade holders though so that is on order. I just remembered another thing that happened though. When I was flying it the other day, some kind of power cut out happened. It dropped down to a low throttle output and I quickly landed it. Battery shows 3.7 per cell. Running the stock Phoenixtech esc and motor. Battery is a 6s 5000mah nano-tech 60c. Only new things are the lipo and switching to a 17t pinion. Any ideas?
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Post by Dr. Evil on Mar 6, 2013 22:03:47 GMT -4
Spun it by hand and nothing looked like it was moving like I could see in the button. I did discover a crunchy bearing in one of the blade holders though so that is on order. I just remembered another thing that happened though. When I was flying it the other day, some kind of power cut out happened. It dropped down to a low throttle output and I quickly landed it. Battery shows 3.7 per cell. Running the stock Phoenixtech esc and motor. Battery is a 6s 5000mah nano-tech 60c. Only new things are the lipo and switching to a 17t pinion. Any ideas? Check throttle curve maybe?
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Post by chitty024 on Mar 6, 2013 22:06:15 GMT -4
Spun it by hand and nothing looked like it was moving like I could see in the button. I did discover a crunchy bearing in one of the blade holders though so that is on order. I just remembered another thing that happened though. When I was flying it the other day, some kind of power cut out happened. It dropped down to a low throttle output and I quickly landed it. Battery shows 3.7 per cell. Running the stock Phoenixtech esc and motor. Battery is a 6s 5000mah nano-tech 60c. Only new things are the lipo and switching to a 17t pinion. Any ideas? Check throttle curve maybe? 80 straight, even almost sounded like it cut out a couple times on pitch pumps? Is the esc going out?
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Post by Dr. Evil on Mar 6, 2013 22:30:09 GMT -4
humm, not sure....so sounds like only under a load?
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Post by chitty024 on Mar 6, 2013 22:55:52 GMT -4
humm, not sure....so sounds like only under a load? yes and then like I said it shut down to like 20% throttle at 3.7v and I had the land
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Post by Valkman on Mar 7, 2013 4:54:58 GMT -4
Check the connections on the LiPo. You could have a dry solder joint which would give exactly the same result. It would work fine but when put under load it won't be able to supply the extra current demaded. If you don't find anything else I would do the same to the motor connections and check for dry/bad solder joints.
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Post by osidak on Mar 7, 2013 11:50:06 GMT -4
My phoenixtech esc did the same thing from new - actually even a little worse. Lipo's where showing 3.75 to 3.8 volts per cell. Turned out the esc was over heating and cutting the power.
Try landing the bird when it cuts and then pull the canopy to allow the esc to cool and then take off again in a few minutes and see if the power returns. Mine would behave again normally after it cooled.
Ended up replacing the esc with a CC100 and haven't had the issue since.
The higher tooth count of your pinion is going to increase your load on the esc and thus make it run hotter.
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Post by chitty024 on Mar 7, 2013 22:16:26 GMT -4
My phoenixtech esc did the same thing from new - actually even a little worse. Lipo's where showing 3.75 to 3.8 volts per cell. Turned out the esc was over heating and cutting the power. Try landing the bird when it cuts and then pull the canopy to allow the esc to cool and then take off again in a few minutes and see if the power returns. Mine would behave again normally after it cooled. Ended up replacing the esc with a CC100 and haven't had the issue since. The higher tooth count of your pinion is going to increase your load on the esc and thus make it run hotter. That makes perfect sense. That's exactly what I worried about. I knew I needed to upgrade the esc at some point anyways. Did find the vibration I think though. The tail rotor hub was bent, didn't look like it but I measured from the tip of the tail rotor to the boom and one was off by about 5mm. Hopefully between that and the head button I will be good. I suppose I could just change the pinion back but I think I'll look into a new esc. Any recommendations?
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Post by osidak on Mar 8, 2013 0:30:33 GMT -4
I went with the CC Ice 100 and it has been great. Was able to buy it new for $89 off fleabay. That said I am moving this model to 12s and it can only do 8s so I am having to replace it. Looking at either the YEP 120HV or the CC Ice2 120HV. Big difference in price but I really like the logging the castle does and I know the gov is rock solid. That said the YEP is supposed to be a knock off of the previous gen YGE and those are very well regarded as well.
I am leaning towards the CC - that said my neighbor has been really happy with the hobbywing platniums he has been using on his 450 and 550
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Post by chitty024 on Mar 8, 2013 1:10:13 GMT -4
I've been looking at the cc 100. I was just concerned that the phoenixtech I have is a 115 and is over heating...is that just cause it can't handle bursts? I also read some good things about the YEP esc but the longer I am in this hobby I have become leery of off brand equipment.
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Post by sgmason on Mar 8, 2013 9:30:42 GMT -4
The heat sink on the CC Ice 100 is much more substantial than the Phoenixtech so as long as it has air flow it should stay cooler.
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