If you have ever had an ESC burn or battery suddenly drop voltage mid-flight then you will understand the importance of having a rock solid system powering your receiver and servos. With instant failover protection the TURNIGY Redundant DUAL 8A UBEC system is an easy choice for anyone flying large scale aircraft. The Dual 8A UBEC controller instantly switches to the second UBEC in case of a short, burnout, or power loss (faulty battery). The LED indicates #1 or #2 UBEC live status, over voltage (short) or low battery voltage. The TURNIGY Redundant Dual 8A UBEC can be connected to one or two battery packs and provides redundancy in the case of an electronic, connection or battery failure. In most cases UBECs fail when an FET burns, shorting the circuit, frying your battery and cutting power to your receiver. This system prevents that by keeping the circuit open and switching source to the second UBEC and battery.
A must have for larger size aircraft!
Spec. Input: 6.6~8.4V (2 cell Lipoly) [Two battery or two conn. to the same battery] Output: 5.9V(+/-0.5V) Max Load: 8A Weight: 49g VR Mode: Linear
Included. Dual Redundant 8A UBEC x 2 Dual Redundant Controller x 1
This product is designed and manufacturered in house. Stock arrives frequently (every few days).
Ola meu sistema acende 2 LED vermelhos quando eu ligo ... Ja foi revisado e nao tem problemas nas baterias e nenhum fio quebrado ou algo do tipo . Aguardo resposta de Ajuda
Precisa ta ligado no Rx para ficar Azul ?
Precisa ligar em Y os cabos da Baterias ?
Mate do yourself a favour and just cut them off, they dont work and could be potential problem later...i have more than 6 of these in use and think they are bulletproof and reliable and good power delivery..
LED's can anyone clarify when the two led's should light up. They seem to only flash when power is turned off. I get two blue lights when both batteries are connected and the led do not light except when you disconnect power from either side. Is this normal.
Should i put this on a Frenzy 600bd ep heli of get another BEC i want a strong heli that i can rely on while its in the air? also if suggested this on a 600 size heli what battery(s) should i get to power it?
This system is quite big. To fit it to a 600 size EP helicopter will be tricky, not to mention the added weight. Depending what you are going to be doing, I would fit either a 5.1V 8-15A UBEC or a 6V, 8-15A UBEC with a 2S 3000mA lipo. I have two 5.1V 8-15A UBEC's with 2S 3000mA Lipo's on my scale 90 size nitro helicopters. No issues to date.
Have this BEC, When plugged into 2 cell 3000Ma Nano's both Blue leds light up. When moving the controller sticks I see flashes of red from the BEC. Is this Normal? I understand that 2 switches need to be installed between Lipo and BEC, This is to prevent discharging the batteries correct?
Not happy with HobbyKing responses. I have repeatedly asked the same question and have not mentioned anything about warranty. Again, When plugged into 2 cell 3000Ma Nano's both Blue leds light up. When moving the controller sticks I see flashes of red from the BEC. Is this Normal? The last response was "We are sorry to learn your bad experience on our product. But we are afraid we can not warrant the item as warranty period of the item is one year according to our warranty policy. Please kindly contact us earlier next time. Thanks for your understanding." I understand however this new never used and I asked a question regarding if this bec was working properly. Please advise if there are any technical issues we should be concerned with regarding this product. If you viewed the video can someone comment if this is functioning properly.
OK Jaon I have guestin for you, I have just recieved two of thes and wanted to know if they use the more changed battery and switch back and forth between the batteries depending on the level of charge in each one?
Yes and no, unless it registers one battery as getting low, both packs are used. The important point is that IF one of the packs was to get low, it will switch, the other important factor being that the unit monitors both packs at all times. The possible weak link in the chain is the packs, you must ensure you use good 2s Lipo's with an adequate capacity for the job.
Well I actual testes this fact using 2 full batts, one low and one full, two full batts and resulta were good.
Actually both work at the sane time unless one batt is top low but at the end it is all you expected and it fights to keep your power stable. Good product.
Since these are liner regulators, are they pulling current even when not in use? Point being, your second pack will have to be monitored and the batteries and regulators must be seperated by a switch or unplugged to avoid discharging them when not in use correct?
You don't run this UBEC off the motor batteries. My motor will be pulling close to 100 amps. I think this ubec is run off of two separate 2-cell lipos. I just have to figure out the mah I need to use. Thanks anyhow.
It can be if you need that extra level of security but if a single battery is of suficient capacity fore your needs and you're confident it isn't about to fail unexpectedly you can conect them both to that one battery and save a little bit of weight.
This is two reduntant BEC that supplies power to one receiver and servos. How are independent circuits with an automatic switch use only one battery to power two BEC is counterproductive. The correct way is to use two batteries, one for each BEC. If a battery fails, the circuit should switch to another battery. If the goal is safety of flight with two independent circuits of power, then this is the ideal BEC. If you think a battery and a BEC is sufficient and safe for your equipment, then use a BEC and a battery.
I guess I asked the wrong question. How many cells, and what is the mah recommended to be used with the Turnigy Redundant 8A UBEC when used in a giant-scale plane? (What does the factory recommend?)Anyone know?
This uses 2 cell Lipo's. The MAH is up to you. If you are flying a GS plane I would recommend at least 2650mah (to keep weight down) and up to 5200mah packs depending on the draw of the servos and how many you use. Make sure you are testing them after each flight so you know when to charge them.
This is the best answer I have gotten yet, and I appreciate it. I'll be using 5- standard servo. 2 for elevator, 1 rudder, and 1 for each aileron. I think I will use the 2650mah you recommend for 7 min. flights and check how much I used out of them each time I land. Thanks for you help.
One problem with these that I see is the large input/output wires are soldered "surface mount" style directly to the pads. That is likely going to fail eventually. It needs a plated through hole and the wire inserted and soldered on both sides, or a nice screw terminal. A screw terminal would be negligible in weight and make it easier for people to use longer wires etc. instead of having to desolder them.
Hi Rudi, no I do not recommend to use it with 2S LiFe. A linear regulator needs a specific minimum voltage difference between input and output to be able to regulate. If its 6,6V minimum, your regulators would not be able to do their job right when the 2S LiFe is not charged really full. Do yourself a favor and use a 2S LiPo. Your aircraft will thank you with a longer life.
If you drain one battery completely, you have flown for too long... If then the other battery or BEC fails, too bad, you are already on the redundant supply and your model will go to failsafe. What you must be looking for is tripple or quadrouple redundancy (the paranoid edition).
Not really... Its a good system but I see the logic in Downloader's post. If I have a 30 or 50cc plane and I want to run dual 1800mah lipos (with most systems this would give me 3600mah) I can fly all day with no worries about charging my flight packs because they draw power from both batteries equally. This system will only draw power from one battery and so I'll get half the flights. The other battery and BEC will be dead weight unless a problem happens. They should make it so the system will draw the power from both batteries using both BECs, less work for just one of the BECs to worry about, less heat, more flight time between charges.
What a lot of connectors........ and tamiya style???? Seriously???? This does not looks great. Also it is not great with single output and single controller. Only a real dual system is redundent. Better get 2 single bec's :)
They're not Tamiya connectors. They are similar, and they can handle more than 15A which is far above the rated capacity of the electronics. The connectors also cannot be disconnected accidently, this makes the perfect for the application. This is a true redundant system on power handling parts which are the parts that fail in 99% of cases. Yes, having two BEC would be 'true' redundancy, but there would be no failover then is dissabling of the failed unit, if an FET burns it will still short the pack (fire). So this system is BETTER than running two single UBEC side by side.
Will the BEC's and controller be available as separate items in the event of the unexpected. I assume the pack that is plugged in first is the primary BEC? Is there any indicator to show status of the battery condition or is there a cut off level programmed in somewhere?? I've ordered one but wondered if theres the same indicator as with the 8-15A BEC
The controller will fail if it gets wet, (so would powerbox) or if killed by vibration (so would powerbox). This unit is designed to avoid the very common issue of FET burning which in turn shorts the battery (when an FET burns it shorts.. the battery rapidly discharges and.. fire!). The controller will shut down power to the failing UBEC and switch over to the second UBEC instantly without dropping power to the Rx. The controller doesnt handle the power and has no way of burning out like a UBEC.
Bigger than it looks. quality is a bit suspect....my output positive cable wasnt tinned before being soldered to board, so its very frayed and touches the negative. Will have to strip heatshrink off and resolder as its not worth returning. Cant say I'd trust a big model with it in. Similar issues where cables are soldered to each BEC too, sorry HK, needs looking at guys
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Recived two 8A dual UBEC Rx Power System, Works Fine so far in my2.6m Extra330L gerat value makes Flying Big Planes soo much easier and safer!!! Will buy more!
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Wow, these are HUGE! Not going to fit into small fuselages.
I bought 2 sets for large 1/4 scale gliders with roomy fuselages. Both sets are good quality, no issues.
Well done Hobby King, as always.
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This is a huge BEC... According to me it is worth every penny spent. It was packed nicely when i recieved it. The wires are of good quality and it is quite impressive aswell... I like this product... 5 stars to it.
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On quality rather well executed, load it more than 8A, holds without any problems, give a little sagging ... up to 7,5 - 7,7v.
In general, while pleased with the product, put it on the petrol model.
The only thing - I would like so that he weighed a little less ....
But then his weight around 140-150g