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RE: LiFe or Lipo with regulator??
<span style="font-family: Comic Sans MS;"><span style="font-size: medium;"><span style="color: rgb(128, 0, 0);">Again every one has a differant openion and they want to convince everyone that their purchacing or way of doing something is better than anyone else. Ya know in the end it just doesn't Freekin matter. Most crashes happen because of pilot error not equipment failure ... expect in the case of DSM2.
OOPs their I go changing the subject and bad mouthing Spectrums. Sorry <span style="font-size: x-small;">he he he ha ha ha</span> </span></span></span> |
RE: LiFe or Lipo with regulator??
To me it comes down to safety. I do not trust LiPo's at all, have known/heard of too many fires from charging and in planes.
The LiIon's are very safe and work great in RC but do require a reg in most setups as are the LiMag's. The A123 batts are very good, a little heavyier than a LiIon mah to mah size but you dont need the reg with it. As said before, research the care, handling and charging of each battery you use. |
RE: LiFe or Lipo with regulator??
<h3><font color="#800000">Short story ... Monday a club member had just gassed up with Gasoline and filled his
Smoke tank of his giant scale Cap 232, with his concoction of transmission fluid and something else. This was back out of the pits more where the cars are parked. I was just standing there as was he and all of a sudden there came a wisp of smoke from under the smoke tank where it turns out a large NiMH battery was wrapped tightly in foam. (He had just charged all night before coming to the field). Then it stopped for a few seconds, then got worse. the smoke tank was secured with 3 black tiraps to the plane. Well he grabbed the tank and ripped it out by the roots taking what ever it was secured to. Then the smoke seemed to subside for a second time. Went to pull the battery out and it was hot enough to slightly burn his fingers. Got the battery out finally and he had taped the connection so had to acquire a knife to get the battery unplugged. After unplugging the battery and starting to unwrap it it started to flame up. He through it away from us and it proceeded to consume it's self in flame. Might have been a whole different story 5 minutes later when he would have been up in the air.</font></h3><h3><font color="#800000"> So much for nice safe Mimh batteries. </font></h3> |
RE: LiFe or Lipo with regulator??
i fly life only. no regs. less to go wrong. a123 can false peak and dump inflight.
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RE: LiFe or Lipo with regulator??
ORIGINAL: HoundDog ORIGINAL: airraptor I will never use A123's. to me A123's are the same as DA engines lol they get the job done but so do LiFe and DLE engines at a reduced price. My Opinion Now all i use are the Hobbico and Hyperion LiFe batterys. They out perform the Nicad and NiMh batterys. they are half the weight and have the same Mah rating. What you need to pay attention to is the C rating of them. some of the Hobbico LiFe batteries only put out 1C some are over 10C. Onother thing i dont like about the A123's are they only come in one size and they weigh more. I have crashed a couple of LiFe's at over 140 into the ground and the battery was crushed and split open. it was mounted behind the engine, reciever, servos, fuel tank and wing mounting block. it ripped through all that. It didnt catch fire or even get warm.<span style=''font-family: Comic Sans MS;''><span style=''font-size: medium;''><span style=''color: rgb(128, 0, 0);''>Hope your 140 crashes wern't because of th poor High Current out put of LiFe's ... True A123's will out put much higher current. One problem (OH but a small problem if U properly document flight times and charges) is that it is hard to check the remaining (CHARGE) in this type of cell. This is because of the very flat but long working voltage. ie they fall off very quickley near the end of their charge. Telemetry that would mesure the consumed MiliAmps might be nice. Just my 2 cents worth.</span></span></span> I have HV serovs also on most planes now and still use the LiFe batterys. IMO for todays tech its the only way to go. To me it comes down to safety. I do not trust LiPo's at all, have known/heard of too many fires from charging and in planes. The LiIon's are very safe and work great in RC but do require a reg in most setups as are the LiMag's. The A123 batts are very good, a little heavyier than a LiIon mah to mah size but you dont need the reg with it. As said before, research the care, handling and charging of each battery you use. " LiIon and LiPo have the same voltage so yes you need a regulator for normal servos. The HV ones you dont. LiFe you DO NOT need a regulator for most current servos. DDlstang " |
RE: LiFe or Lipo with regulator??
ORIGINAL: HoundDog </font></h3><h3><font color=''#800000''> So much for nice safe Mimh batteries. </font></h3> Sounds like he shorted the battery somehow! |
RE: LiFe or Lipo with regulator??
ORIGINAL: stoneenforcer i fly life only. no regs. less to go wrong. a123 can false peak and dump inflight. |
RE: LiFe or Lipo with regulator??
For receiver packs I only fly with LIFE and A123 packs. I was bit late last year and vowed never again.
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RE: LiFe or Lipo with regulator??
ORIGINAL: Doug Cronkhite I still prefer Li-Ion for Rx packs myself. I run Fromeco products, as I think Kurt puts together about the highest quality power system I've seen. Scott |
RE: LiFe or Lipo with regulator??
I use on my 44% Giles, 33% Extra, Turbine F-18, and Flash, I use the same set up on all of my planes, and have been using this set up for the past 5 years with at least 500 flights on the combined planes with no issues!! . The system just works, and has never given me any problems. I like the Dual 7.4 Lipos into Fromco Wolverine dual switch, then to dual Sahara regulators and then to the receiver. There is never a power spike to the low side this way and always constant power. I don't feel this power security with strictly a battery of any kind to the receiver. I have had the 6.6 LiFe and didn't like them. Also, something to think about is that the miliamp draw of 1000ma off of a regulated lipo, isn't the same as 1000ma from a Life.......IMHO. There is more power from the same milliamp lipo, then an equal milliamp Life. I have had a spike to the 3.5 V on a smaller plane (of course, lost the plane) just using a straight battery to reciever, and now go over board. I do not like the Spektrum regulators with the fans, especially in the gas planes. Too much vibration and the fans fail.
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RE: LiFe or Lipo with regulator??
Actually I totally solved my battery issues.
I switched to extension chords from Walmart. I get the really long ones when the go on sale. Only draw back is you have to count your rolls to keep them equal. Ten rolls to the right and then you pretty much need ten rolls to the left. Otherwise the knots get tough to manage. What's the best portable generator to get...Honda? :D:D:D Tom |
RE: LiFe or Lipo with regulator??
I fly with Li-po's + reg's. Dual setup in all my warbirds and turbine aircraft.
Not had a problem yet! and I am now also starting to use Smartfly power regulators in my models, so if one pack or regulator goes U/S, the aircraft will be supplied from the other serviceable pack. The guy's at my club reckon I'll never make it in the turbine world because I'm not using the most expensive option for a simple problem[X(] Thanks dave |
RE: LiFe or Lipo with regulator??
[quoteOnly draw back is you have to count your rolls to keep them equal. Ten rolls to the right and then you pretty much need ten rolls to the left. Otherwise the knots get tough to manage. ][/quote]
Sounds like my old control line days:) |
RE: LiFe or Lipo with regulator??
ORIGINAL: Texastbird [quoteOnly draw back is you have to count your rolls to keep them equal. Ten rolls to the right and then you pretty much need ten rolls to the left. Otherwise the knots get tough to manage. ] [/quote]<span style="font-family: Comic Sans MS;"><span style="font-size: medium;"><span style="color: rgb(128, 0, 0);">The Ideal electric set up would be an electric motor with an alternator on the back powered by a 1/2 A nitro motor. What da ya think ... <span style="font-size: xx-small;">he he he</span></span></span></span> |
RE: LiFe or Lipo with regulator??
ORIGINAL: Doug Cronkhite I still prefer Li-Ion for Rx packs myself. I run Fromeco products, as I think Kurt puts together about the highest quality power system I've seen. I also like the fact that I can actually check the pack voltage under load. I only have one jet but many gas planes, never had a problem with any of them. Steve |
RE: LiFe or Lipo with regulator??
I still like IONs they are less weight than A123s and Lipos plus everything I fly has a power systems so I save weight. I do also run combos when I need to get the best weight/preformance.
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RE: LiFe or Lipo with regulator??
I know you are kidding because you you would need two extension cords for redundancy and another Honda. What is everyone using for redundancy in their Tx batteries?.:) George ORIGINAL: tomfiorentino Actually I totally solved my battery issues. I switched to extension chords from Walmart. I get the really long ones when the go on sale. Only draw back is you have to count your rolls to keep them equal. Ten rolls to the right and then you pretty much need ten rolls to the left. Otherwise the knots get tough to manage. What's the best portable generator to get...Honda? :D:D:D Tom |
RE: LiFe or Lipo with regulator??
Dual Life, no fancy anything needed, just connect them in parellel. The chance of the LIFE failing is far less than any device failing that switches them.
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