Almost lost my Integral today
#1
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Almost lost my Integral today
Today March 21st is certainly my lucky day. I have been planning to replace my receiver pack for about 2 weeks and wanted to wait for local hobyy store to get it. After my last flight today wen i was putting the plane away i noticed that my 7.4 730 mah cell pack had puffed. Again, i wanted to replace the pack becuase when fully charged it would only read 8.27 volts as opposed to the 8.39 that it would normally be. I always check before each flight with a load meter to make sure that they battery can take load that the servos need to operate properly. Long and short of it is check, double check and triple check your batteries, to make sure that they are still good. Lucky pilot signing off
#4
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RE: Almost lost my Integral today
Yeah Mike; he has got his Impact flying and he is flying it pretty good. He is going back and forth as to what class he will fly this year. He is considering masters. But with you and the other Chicago gang flying masters; i think i will wait till they invent some new class in between Master and FAI; that way i can stand a chance in masters
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RE: Almost lost my Integral today
My 2nd flight this year last weekend, I land the plane and at the end of rollout I throttle up to taxi back but have no rudder, aileron or elevator....but it still takes throttle (what do we call throttle on E planes?).
So I walk out and verify this. No go, pop the top and the green receiver light is on, then blinks out as I watch.
This puzzles me a little as I could swear the battery was charged, I checked before flight at 8.1V's, it is a 2S 800 Mah Lipo. I checked the pack after flight and its between 3 and 4 V, I put it on the cell Pro and it starts taking a charge but at the Low Voltage feature and reads 0% capacity. Finally it takes 700 mah charge. So either I ran it flat do to poor memory, or something else went wrong. It didn't puff.
Yes take care of your batteries........now...do I run this recovered battery or not...hmmmmm...nahhh.
So I walk out and verify this. No go, pop the top and the green receiver light is on, then blinks out as I watch.
This puzzles me a little as I could swear the battery was charged, I checked before flight at 8.1V's, it is a 2S 800 Mah Lipo. I checked the pack after flight and its between 3 and 4 V, I put it on the cell Pro and it starts taking a charge but at the Low Voltage feature and reads 0% capacity. Finally it takes 700 mah charge. So either I ran it flat do to poor memory, or something else went wrong. It didn't puff.
Yes take care of your batteries........now...do I run this recovered battery or not...hmmmmm...nahhh.
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RE: Almost lost my Integral today
Or run a redundant set of LiPo's with dual regulators. That turns your close call into nothing more eventful than another $30 charge on your MC for the replacement battery!
#11
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RE: Almost lost my Integral today
I've been running one of the Tech Aero dual regulators and love it. 100% adjustable and definitely worth it. I almost lost my Black Magic last Sept to a battery. Did tear it up some and had to get it repaired. If I'd been flying the regulator then, I wouldn't have had that problem.
Arch
Arch
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RE: Almost lost my Integral today
Where can i buy this peace of mind you speak of?
#14
RE: Almost lost my Integral today
ORIGINAL: rcpattern
I've been running one of the Tech Aero dual regulators and love it. 100% adjustable and definitely worth it. I almost lost my Black Magic last Sept to a battery. Did tear it up some and had to get it repaired. If I'd been flying the regulator then, I wouldn't have had that problem.
Arch
I've been running one of the Tech Aero dual regulators and love it. 100% adjustable and definitely worth it. I almost lost my Black Magic last Sept to a battery. Did tear it up some and had to get it repaired. If I'd been flying the regulator then, I wouldn't have had that problem.
Arch
I didn't look at all their products but I didn't see anything that could tell you your battery was going to fail unless you took the time to test it with another device. Is that correct or did I miss something?
Jim O
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RE: Almost lost my Integral today
Arch,
I didn't look at all their products but I didn't see anything that could tell you your battery was going to fail unless you took the time to test it with another device. Is that correct or did I miss something?
Jim O
I didn't look at all their products but I didn't see anything that could tell you your battery was going to fail unless you took the time to test it with another device. Is that correct or did I miss something?
Jim O
I should also add that you will survive a complete failure of any one battery, wire, etc. That's the key to this configuration. And the regulators are all failsafe in design, so switches aren't ever going to cause an issue.
Another feature is that they are very low dropout voltage regulators, so it is more likely that even a single battery / single regulator configuration can survive a one cell failure and let you land safely, since only a couple of tenths of a volt is dropped across the regulator when the battery voltage input to the regulator falls below the pre-set output voltage. For example, a LiPo pack has a cell die, but is still capable of delivering current. You have about 4V left to work with. The output of the regulator will be 3.8V, enough to get you home in a lot of cases.
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RE: Almost lost my Integral today
Redundant power should be a good thing....
I've been running a UBEC from my 10s for the last 3 years, plus a regulated 730 with rectifier diodes on both connectors to the receiver. (There are lots of opinions on whether that is needed or not.) A couple of weeks ago, I was finishing a round but when I tried to pull out of the spin there was no response. My Integral went straight down.
The UBEC had a burn spot on the wrapper, and under it was a square component that had some soot on it. My only guess is that it was shorting for at least a couple of seconds, and it takes about another second for the receiver to come back from being locked out. There isn't a lot of time when pulling out of a spin, so that combination got me.
I'll still run with this setup.
Ken
I've been running a UBEC from my 10s for the last 3 years, plus a regulated 730 with rectifier diodes on both connectors to the receiver. (There are lots of opinions on whether that is needed or not.) A couple of weeks ago, I was finishing a round but when I tried to pull out of the spin there was no response. My Integral went straight down.
The UBEC had a burn spot on the wrapper, and under it was a square component that had some soot on it. My only guess is that it was shorting for at least a couple of seconds, and it takes about another second for the receiver to come back from being locked out. There isn't a lot of time when pulling out of a spin, so that combination got me.
I'll still run with this setup.
Ken
#18
RE: Almost lost my Integral today
ORIGINAL: kcnelson
Redundant power should be a good thing....
I've been running a UBEC from my 10s for the last 3 years, plus a regulated 730 with rectifier diodes on both connectors to the receiver. (There are lots of opinions on whether that is needed or not.) A couple of weeks ago, I was finishing a round but when I tried to pull out of the spin there was no response. My Integral went straight down.
The UBEC had a burn spot on the wrapper, and under it was a square component that had some soot on it. My only guess is that it was shorting for at least a couple of seconds, and it takes about another second for the receiver to come back from being locked out. There isn't a lot of time when pulling out of a spin, so that combination got me.
I'll still run with this setup.
Ken
Redundant power should be a good thing....
I've been running a UBEC from my 10s for the last 3 years, plus a regulated 730 with rectifier diodes on both connectors to the receiver. (There are lots of opinions on whether that is needed or not.) A couple of weeks ago, I was finishing a round but when I tried to pull out of the spin there was no response. My Integral went straight down.
The UBEC had a burn spot on the wrapper, and under it was a square component that had some soot on it. My only guess is that it was shorting for at least a couple of seconds, and it takes about another second for the receiver to come back from being locked out. There isn't a lot of time when pulling out of a spin, so that combination got me.
I'll still run with this setup.
Ken
Jim O
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RE: Almost lost my Integral today
If the short wasn't instantaneous (but arcing for a couple of seconds) then the noise generated might have interfered with the receiver.
After picking up the pieces, everything was OK except the speed controller (split in half), the UBEC, and TP 5300. 730 lipo was dented but worked fine. Switch was OK. Receiver was OK. Even the motor survived and is back in my Symphony. (Just to be safe, I'm using a different receiver and a new switch / regulator)
There is a very slight chance that I didn't turn the switch on before flying, but I'm pretty consistent about checking controls. When I insert the shorting plug, I get power through the UBEC to the receiver without going through a switch, and that would have allowed flying right up until the end.
Ken
After picking up the pieces, everything was OK except the speed controller (split in half), the UBEC, and TP 5300. 730 lipo was dented but worked fine. Switch was OK. Receiver was OK. Even the motor survived and is back in my Symphony. (Just to be safe, I'm using a different receiver and a new switch / regulator)
There is a very slight chance that I didn't turn the switch on before flying, but I'm pretty consistent about checking controls. When I insert the shorting plug, I get power through the UBEC to the receiver without going through a switch, and that would have allowed flying right up until the end.
Ken
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RE: Almost lost my Integral today
If the short wasn't instantaneous (but arcing for a couple of seconds) then the noise generated might have interfered with the receiver.
#23
RE: Almost lost my Integral today
Yep,...I will be switching to Tech-Aero myself.
Bill Holsten
Advantage Hobby&Fliton RC Field Rep/Duralite Batteries/Custom airframes of America/Drangon Fire Custom Graphics/ Guardian America.
Bill Holsten
Advantage Hobby&Fliton RC Field Rep/Duralite Batteries/Custom airframes of America/Drangon Fire Custom Graphics/ Guardian America.