Turnigy MEGABEC 8

 Dan Goncalves 30 points

Recomendo esse BEC, já utilizei, porém se for utilizar apenas para o receptor o Sr. pode comprar esse: www.link ele é livre de interferência, tem a escolha de 5 a 6v de saída e é mais barato.

 edududa 14 points

Isto só* para o recptor qual é* o link do Bec?

 MasterB 105 points

I would say someone messed up solderding work at the factory... Best send it back to HK, and contact them at Live Support, it is much quicker that way

 Vasilis 9 points

MasterB thanks for reply . Ive been in contact with hobbyking since then , and still no conclusion . I send pictures, videos, texts etc... when it comes to resolve problems, hobbyking is the worst.!! Sorry HK but i am fed up with you.!

 stewjw 217 points

I've had a few unresolved issues with HK. But if you've not messed with it and you can clearly show its not working I'm sure they will refund. Try again, sometimes you need to be a little persistent and keep your arguments constructive. At the end of the day its another person handling your enquiry and they can only go on the evidence you supply them.

 stewjw 217 points

I like the look of this may give it a go.

 Vasilis 9 points

Stewjw after my 6th contact and as you said "another person" case was solved and i was refund.

 Pushrod 585 points

This seperates you main battery from your receiver batttery. Use a 2s battery to power this unit.

 Walter 3 points

1800 mah es mas que sufuciente para ese requerimiento de 6 servos y para ese avion:

 rea59 7 points

I've used this on two different gas engines to power the ignition with a 2S lipo battery. Works well.

 Pushrod 585 points

No connectors supplied.

 Davi 1569 points

I have to buy?

 Davi 1569 points

é só encaixe, tem 2 fios ainda www.link

 Pushrod 585 points

Yes you have to buy.

 chfet 82 points

i bought Servo Terminals (Futaba) Gold Plated (10pairs/set)to servos/receiver and HXT 4mm Gold Connector w/ Protector (10pcs/set)s for battery because this hold up to 90amps, other think is that it is very hard attached, so you can be sure that it dont will release in middle of the flyght

 Pushrod 585 points

This is what you need . This plugs into your receiver and plug servos and lights into reciever also if there is a intrenal BEC in your speed controller you must remove the red/live wire from the throttle cable plug.

 robin 10 points

THIS IS USED FOR ..A 7.4 VOLT 2S AND KNOCKS IT DOWN TO 6VOLTS SO U DONT SMOKE YOUR SERVOS...OR WHAT EVER ONLY TAKES 6VOLTS...THEN THE LIGHT IS TO TELL YOU..THE BATTERY IS LOW...SIMPLE..HEAVY DUTY GREAT FOR THE 1/5 SCALE GAS ENGINE BOAT OR TRUCK/CAR....

 Pushrod 585 points

This is used to seperate the drive motor form the servos.

 Polardegos 54 points

It is useful if you don't have any other way of controlling the voltage to your system* say your system can't handle higher than 5 volts, but no batteries are 5 volts, they are either alot more or lower (wich is bad), you then use this to set the voltage from the battery and out to your system at your preferred voltage. It can also be used as a "buffer" to protect your ESC, since it is able to allow 8A of current to flow through it without burning, wich your ESC most likely is not able to.

 crashd 103 points

why'd you buy it?
It's a BEC. Use it to power your rx with a 3-4 cell lipo. Or your ignition if you've got a gasser. Those are the practical uses.

 blazer1 82 points

BE CAREFUL!! this BEC is rated for 2s (7.4v)lipo max!I use them in my larger planes to power the servos.

 jaccies 55 points

since it is able to allow 8A of current to flow through it without burning,
YEah but dont forget you will burn yourself because the unit got very hot, at 2Amp 50 degrees at 8Amp >80 degrees, so watch out

 Pushrod 585 points

No, the receiver cables are not designed to hold that much ampage they need to be change out to a heavier gauge cable.

 David 20 points

How about the tiny servo connector? Surely they csnnot take the hi amps even if i can find a means of attaching big wires to those tiny connector. Am I right in believing that the output from the bec goes to the receiver or does it go to some sort of electronic device instead? Basically I have no idea how to make use of the 6 A the bec provides

 Pushrod 585 points

these tiny servo connector will with stand about 15 to 20 amps no problem and a 22 AWG servo cable would be capable of the same.if you were linking two together then i would be concerned but one is absolutely fine with a standard servo plug and 22 AWG servo cable.

 David 20 points

I am not so good at wire specs and such. As an example, for those HXT900 servos, what size wires are they? Another example, those 3 coloured insulated wires in a normal household appliance power cord, what AWG are they? I don't think I am going to need those 6A, the plane I'm using this bec in just have 3 or 4 standard servos (have not yet decide to use a standard servo for throttle or not), and not for 3D flying, just ordinary plain flying. I'll just make my own leads with thicker wires if I need those Amps.

 Pushrod 585 points

The HXT900 i think it uses a 22 or 24AWG cable and a household power cable would be about 14 to 18AWG, They over rate household cable by about 50 to 75 percent to ensure the fuse fails before the cable. This BEC will have no problems with 5 stanard servos.

 Gerben 520 points

Sorry to disagree pushrod, but a std servoplug tends to get pretty hot at anything over 2A continuous. David, this BEC is a bit overkill on 3-4HXT900's you can save some flying weight by using a lighter BEC unit, there are many available here at HK. Gerben

 Pushrod 585 points

A micro servo like the HXT900 would draw about 500mA give or take depending on the strain thats put on the servo mutiplied by 4 servos equals 2amps.
A standard servo would draw about 2amps on average and up to 3 or 4amps depending on the strain put on the servo but this ampage draw is not continuous and therfore would not heat up so much. Im not saying the plugs wont get hot as all electric components get hot.
If a standard servo can draw as much as 4amps under strain multiplie that by 4 servos equals 16amps that is 4amps per servo plug and cable at times.Anolog servos draw considerably less ampage then a digital servo. This BEC allows up to an 8amp current draw this is not 8amp continuous output as it is divided out between all components connected to it.

 Gerben 520 points

Pushrod, keep into account the average load. For example a F5B hotliner with 5 digital servo's working fairly hard requires 45mAh for a 13min20sec flight. Sebart Sukhoi 140 with 5 std size digitals flies on a Jeti maxBec (5A continuous)/ If you are pulling stall current on your servo's check your linkages, as something is not setup right.

 Erik 8 points

Could this be used with a 2S 5000mah to give power to a receiver with two(large) servos of my sailboat? I assume starting current of both servos at the same time would be something like 3-4A.
(familiar with bec in esc's but no experience with stand alone bec's which I assume this is)

 Gerben 520 points

Hi Erik, This bec should be quite suitable for that purpose. 2S5000mAh seems a bit excessive, if weight is important you may consider using a 2000mAh, which should be more than sufficient for a few hours use, depending ofcourse on specific servo and load on the servo. Regards, Gerben

 Erik 8 points

Thanks for your advice. Weight Is not an issue, its for a large catamaran(robbe top cat) and its more important to be on the safe side. Im going for a 40kg winch and 25kg rudder servo. They will be busy constantly. Want to oversize bec and batt to have as little heat as possible. Hard to ventilate a hull unless water cooled which is a bad solution half the time :-)

 Gerben 520 points

If you want to go super-safe you could use 2 of these. Remove one red wire from the servo (leave all the blacks connected) and solder a second bec to the common minus(black wires) and only to the red wire of the second servo.

 Sloperdude 1309 points

Gerben, excellent point about average servo draw. I've been wondering if on a 3M electric glider with digital metal gear micro servos, whether I wouldn't need more than the usual 3 Amp BEC. 4 or 5 would be nice, but maybe not necessary.

 jacques 3 points

great regulator, one of the best at a great price!

 crashd 103 points

in regard to tiny plugs being capable of high amps... the servo will draw only the amperage that it needs to function. Having a power supply more than capable of total amps used is just a way of ensuring steady power w/o brownouts. A simple way of adapting the large cables down to 22/24awg is to make a small terminal block with male servo connectors on one end. That way you can power your rx and any accessories (lights, etc) you may have.

 Pushrod 585 points

YES minus 2 stock

 Pushrod 585 points

cheez dhansu yet ha

 ernesto 12 points

No problem, when it comes to voltage always refers to the nominal, ie that has the battery at half load, but no problems accepting the 8.40 volts of a 2S lipo

 Pushrod 585 points

this unit works good between 6 and 9 volts

 thedeuce 37 points

The few that i have purchaced came bare on both the input and output sides. Cheers.

 De Bodt 1 points

Thank you very much www.link

 Mariusz 12 points

bec works very well, no factory connectors

 lubos1954 55 points

3 x 8 = 24 yep it OK

 igorp 24 points

Yes but you should use a schottky diode on each one to prevent back current.

 Mariusz 12 points

so you can

 cr8tive_leo 177 points

Yes. That would work, I do the same with an Ultimate I fly. Bec to rx switch, swithc to rx, voila, works well. I use a 2200mah 2s as well, no issues.

 charlie 1 points

i love this product i use it in my 1/8 ofna buggy i race every weekend with it running on a 2s20c 2200mah lipo and dont even use half the batt for 3 weekends 6 races a day at 5min each, running 2 super high torque alum servos from turigy ,durable and efficient even with crashes water etc

 tony330 8 points

ce produit est vraiment genial

 scatsob 38 points

I dont see why you couldnt use it with LiFe. For $11 just add one to your next order and try it out.

 charlie 1 points

i dont see a problem with that mine works great under 8th scale buggy racing

 justice 579 points

this can be used for any battery,after all its a voltage regulater!

 xylonite 1307 points

Yes it can be done.. just add goop or similar to the leg at round orange. This will prevent the leg to loose. Mine i put some silicone.

 matiasmall 7 points

i use it for the hp26cc ignition. works great
fix the capacitor with silicone or else it will break due to the vibrations. happened to me and fortunately could land

 Dimitris 11 points

yes it can handle an 30cc size 3d plane with digital servos easyly

 ALBERT WILSON 15 points

This bec is excellent for large models and is of linear type is zero risk of interference problems .....

 matiasmall 7 points

es el capacitor. el mio se quebro en vuelo y el motor se paro

 tony330 8 points

je l'ai monté sur un yak 54 de 2.70m electrique a la reception avec un accus 2s 3300mah ça marche super bien

 Enio_Aero 1 points

Buenas, pode sim ...eu uso 1 megabec 8 em uma bateria 7.4 p/ receptor e outro para o motor 30cc

 irvine53 8 points

Olá, pode usar una lipo de 7,4v com este megabec para el receptor e outra bateria nimh 2000-3000 para a ignicion del motor.

 fernandolopez 33 points

MUCHAS GRACIAS
por esta informacion , entonces lo voy a instalar.

saludos

Fernando

 matiasmall 7 points

tengo 2 montados en un funtana 125
uno en 5v para el encendido y otro en 6v para los 6 servos digitales.
ningun problema hasta ahora y lleva mas de 100 vuelos.

 fernandolopez 33 points

muchas gracias matias* lo intale en una piper cub escala 1/3 y funciona de maravilla.

saludos

 gofst2 66 points

It means when you use your servos your input voltage to the MEGABEC 8 from your battery pack is dropping below some where around 6.5v. Assuming you are using a 2S lipo, 6.5v only leaves for 3.25 volts per cell. Try charging you battery and try again.

 xylonite 1307 points

what amp/MAH you battery? Try use bigger MAH.

 ObiWan 26 points

Am using ZIPPY Flightmax 2100mAh 2S3P 6C Receiver Pack

 Danilo 5 points

It seems to me that your batt is not working propperly or you need a bigger one cause your beck is telling you that there is a lack of power.

 ninos129 233 points

YOU HAVE TO USE 2CELL LIPO AT LEAST 1800MAH &30-40C .

 Helilover 100 points

blue flash means that your battery is low.

 tonyvenulojo 13 points

Use at least 2200 may 7.4 volt lipo as then you know you have a good power reserve leave your standard lipo flight packs for smaller planes

 Phetalasy 16 points

You can use this straight into power port on your RX. As for your ESC, you need to cut the black wire so that there won't be any power supply from ESC only speed control signal.

 daddyrabbit1954 1 points

The ESC I have ordered states: "This ESC is OPTO, with no BEC supplying power to your receiver. You will need an extra power source for your receiver. (such as UBEC or Rx battery pack)", so is it still necessary to cut a wire?

 boostoman 315 points

you can run this BEC with the ESC its just that you dont have to have the power cable (red positive wire) from the ESC to the receiver connected

 AlfaHX 130 points

Your esc must have a built-in bec to power up your rx and servos. You must disable it to use megabec by simply removing or cutting RED wire coming from esc. Doing this cause your esc to not feed voltage to rx and servos. Then you can connect this megabec to a seperate channel.
It's highly recommended to secure capacitors on this bec with some hot glue.

 cardude 93 points

you remove the positive lead from the ESC (red) wire in the middle of the plug.

 seand 48 points

This wont help if it's connected to the same battery as ESC. ESC's are designed to throttle back and/or cut the throttle when the battery gets low but still power the reciever which is also powering your servo's. That way you can still glide you aircraft back. Unless you have current thirsty servo's, you shouln't need a BEC.
BEC's are generally used for models fitted with gas/nitro engines, which don't have an ESC, to reduce the battery voltage to 5 or 6 volts to power the receiver, servo's, li

 pch.radu 67 points

u need to remove the red lead from ESC and insert the plug from UBEC and yes u need 2 channels

 Acctoon 23 points

Not sure how well it will work with useing two BEC's (ESC and the MBEC). But you would need to use two separate channels idd. One for the ECS and one for the BEC.

 kuno 5 points

you can use a Y-kabel and connect it tha way

 xylonite 1307 points

If you want to remove the power supply to rx via this UBEC, just remove by unplug at the connector(use small pin to get the wired pin put) either red or black where it's is power come from.

 wztester 5 points

use Y-cable

 H-KING_SCOTT 5156 points

It is a regulator, output is 5.9v

 b-29er 47 points

its a BEC. It converts a 2s lipo to 6 or 5v selectable for receiver.

 gustavo ariel 33 points

Es un BEC.

 Phetalasy 16 points

Spot on, its regulator converting 2cell 7.4v lipo to 5 or 6 volts. this unit power reciever ok. Carefull with hightly vibrate(plane/heli) because the unit will easily fail(I loss my heli recently)

 boostoman 315 points

whats the difference between a BEC and voltage regulator? it just lowers the voltage of a 7.2 2S lipo to 5v or 6v you van chose

 AlfaHX 130 points

Yes. you can select between 5v or 6v. This is a big regulator and it can handle 8A.

 pch.radu 67 points

yes and it can sustain 8A

 Helilover 100 points

it is a regulator

 wztester 5 points

is the BEC and voltage regulator the same things? I guess yes it is.

 Phetalasy 16 points

I loss my heli recently due to the IC breaking off mid-flight.

 boostoman 315 points

you can fix it yourself, just get a hot glue gun a reinforce it, it take 2 min

 xylonite 1307 points

I've this on my FuntanaX-100 with saito 1.25 glow, once I get this item I use small amount hot glue gun to reinforce all leg (capacitor/ic etc), some friend use this on their 50cc gasser reinforce using GOOP.. It's your choice. The main idea is when this MEGABEC8 vibrate to much it's will took out the pin leg off.

 Saurabh 20131 points

Why do you need a BEC for 2 cell LiFe. I dont think it is req.

 DaxFX 94 points

you will fry your rx or servos at 7.4v

 Saurabh 20131 points

DaxFX, I know it will fry the rx and/or servos at 7.4V, but the question was if it can work with 2Cell LiFe. For LiFe, it is not required.

 DaxFX 94 points

sorry i didnt see said LiFe i mistake on LiPo

 flamingbear 11 points

The original question still isn't answered.

 eezfly 178 points

Yes IT will work but the A123cells should not need this, it is 6.6v Life not 7.4 Lipo most rx. and servos work well on 6.6v.So yes it will work.

 JeffBr 252 points

IMHO it will NOT work. If the specs that UH supply here are correct you can only hook up a 2S Lipo. Meaning that a 2S Lipo will supply a minimum of 7,4 Volts. A 2S LIFE supply a minimum of 6,6 Volts, which would be too little to feed as input power. Cheers, JeffBr.

 Phetalasy 16 points

Yes you can use 2S LIFE A123 battery. Please keep in mind this UBEC is not safe to use on any high vibration device i.e Heli and gas plane.

 ninos129 233 points

IF YA GONNA USE LIFE BATT THEN YOU DON'T NEED IT ITS ALLREADY AT 6VOLTS.

 Helilover 100 points

no it won't work

 Saurabh 20131 points

go with no 1. I guess i had answered to that.

 Ivan Delac 27 points

Yep in forum ,early i answer here,Thx anyway

 Phetalasy 16 points

Safety warning! if you love your model then don't use this regulator as bit is easily breaking off, I recently loss my heli, the unit easily failed due to vibration. for $15 you can buy TUNIGY 8-15A www.link this thing so good, I used on Heli, planes 30cc, 50cc and 100cc.

 xylonite 1307 points

I've this on my FuntanaX-100 with saito 1.25 glow, once I get this item I use small amount hot glue gun to reinforce all leg (capacitor/ic etc), some friend use this on their 50cc gasser reinforce using GOOP.. It's your choice. The main idea is when this MEGABEC8 vibrate to much it's will took out the pin leg off. For the answer you might use either one but by using passing switch 1st u must have heavy duty switch where can handle hi-amp.

 ninos129 233 points

FORGET SWITCH CAUSE IT WILL ONLY FAIL AND THEN YOUR SCREWED.

 Saurabh 20131 points

it is multi colored LED. changes color with voltage drop.

 Phetalasy 16 points

The LED change color when the voltage drops.

 Babu 44 points

100mfd 25V

 Saurabh 20131 points

Hi,

I am not sure.. but this could be the connection setup...
target=_blank>Parallel Batt

 Saurabh 20131 points

I got it... Here it is.

If you look straight to the Shottky with the printed side (number and name) towards you and pins facing to the ground, extreme left is Pin 1, Middle is Pin 2 and extreme right will be Pin No 3.

1.) Connect the positive from the output of the 1st BEC to Pin 1
2.) Connect the positive from the output of the 2nd BEC to Pin 3
3.) Connect the positive to the RECEIVER from pin 2
4.) Connect all the black (negatives) together.

 Nyfiken 33 points

Saurabh Thank You so much! My very Best Regards Magnus

 Nyfiken 33 points

By the way, I will use two of these Megabec8 on my new "investment" the : Trex700e Glue them on to a ant-vibration support this Schottky diod. Understand that this diod can give a ~0.20 voltage drop, ~5.8v would be perfect! :wink: BR//Magnus

 Saurabh 20131 points

yes. it will, but the light will go red...

 Saurabh 20131 points

It is a voltage regulator... converts 8.4 v to 6 volts for your receiver and servos.

 oldvinyll 75 points

You put a 2 cell LiPo battery with 7,4V on the input side. On the output side you can have 5V or 6V (depending on jumper position). You just have to solder the right plugs. The output cord supplies the energy for your receiver system. So you have a stable voltage. The 5V outlet is especially important if you use servos which can handle 4,8V only.

 ninos129 233 points

IT REDUCES VOLTAGE FROM A 2 CELL LIPO (8.4)TO 6 OR 5VOLTS SWITCHABLE AND SUPPLYS UPTO 8AMPS.

 Saurabh 20131 points

NO connectors provided. This comes only with wires with no connectors attached. you can attach the connectors of your preference.

 __Tyio 49 points

No connector at all, RX or lipo connectors are not included *(

 bigwill 65 points

There are no connectors provided with this UBEC

 jhoffmeyer 11 points

Mine came with no connectors. Only standard JR for rx plug, but none for batt.

 Marocco 88 points

the input voltage is 8.4v (2S lipo)*The output voltage is 5v or 6v selectable by switch.If you have more than - 6v (something like 6.1 is aceptable) do not use them, because problably you have a defective unit.

 Saurabh 20131 points

the voltage will not drop under load uptil 5Amps. this is a heavy duty regulator. It will take the load and not drop the voltage, provided your battry supports it.

 Phetalasy 16 points

The unit already broken, the output at 7.2 then drop to 7.0v meaning the power is straight through.
setting output to 5V, under load always 5v.
setting output to 6V, under load always 6v.

 oldvinyll 75 points

L=100mm x W=23mm x H=17mm