Questions about the Quasar BEC

[cRash_landing]

Hi,

I have no experience using this BEC so I would like to ask questions about it.

I just got a used Quasar and I would like to know is why there is two connections for the FBL instead of one? Switch and Aux.

Can this be use just using one lead to the controller or it has to be two?

There are two red and black wires, which one goes to the controller?

I am using Mini Vbar and should I put in in Port C?

Many Thanks!

[RasmusDK]

Hi.

When you say two connections, do you mean the red/black powerleads??

There are two because it can deliver so much amp that double wire are needed.
It's also a good safety :-)

But it all depends on which servos and heli it will power.

You don't have to use both, but it's recommended.

[cRash_landing]

Originally Posted by RasmusDK

Hi.

When you say two connections, do you mean the red/black powerleads??

There are two because it can deliver so much amp that double wire are needed.
It's also a good safety :-)

But it all depends on which servos and heli it will power.

You don't have to use both, but it's recommended.

Hi,

Thanks for the reply.

Yes there are two power leads on the back.

I am only running this on a 700 heli with low voltage servo, So it does not matter if I only put one set in my FBL controller?

Also I am reading a few Gyrphon Quasar Post here. Post #14

https://www.helifreak.com/showthread.php?t=496507

I bought the quasar used, how do I know it is not an old LMT version? Do I have to concern myself about failure?

Will it matter if it is an old version?

[RasmusDK]

You should use both wires for better safety.

And maybe combine with a backup device, - scorpion backup guard maybe.


I'm not sure how to check for old/new version.
But if it works with a bench tested with full load, you should be fine to go.


Btwdo remember, safety first.
Always use a backup device on this size of heli

[cRash_landing]

Originally Posted by RasmusDK

You should use both wires for better safety.

And maybe combine with a backup device, - scorpion backup guard maybe.


I'm not sure how to check for old/new version.
But if it works with a bench tested with full load, you should be fine to go.


Btwdo remember, safety first.
Always use a backup device on this size of heli

I wanted to use both wires but, I only have 3 ports available in my Mini Vbar.

1- ESC
2- BEC
3- Optiguard Backup

[RasmusDK]

Okay, yes that can be a problem.. but you can use a y-cable. I know its only going in the reciever in one plug, but you still would use both power leads

[cRash_landing]

So, make a Y harness and connect the ESC and BEC second wire to the ESC port?

Is that what are you saying?

It should be like this right?

1- BEC first wire
2- Y harness with the ESC and BEC second wire
3- Optiguard backup

[Xrayted]

Originally Posted by RasmusDK

Okay, yes that can be a problem.. but you can use a y-cable. I know its only going in the reciever in one plug, but you still would use both power leads

Plugging both BEC power leads into a Y and then the one Y plug into a single port in the RX is no different than plugging only one of the BEC power wires into the RX.

It's the servo plug current limit that is the bottleneck, hence the two plugs to split the amp load over two different connections. Running both together into one plug accomplishes nothing unless I'm misunderstanding what you are saying

[RasmusDK]

Originally Posted by Xrayted

Plugging both BEC power leads into a Y and then the one Y plug into a single port in the RX is no different than plugging only one of the BEC power wires into the RX.

It's the servo plug current limit that is the bottleneck, hence the two plugs to split the amp load over two different connections. Running both together into one plug accomplishes nothing unless I'm misunderstanding what you are saying

I know... But it's the only way to use both wires if he want to use both.
But for amp. draw, it won't matter..

[cRash_landing]

That's the thing.

Do I really need to plug both power leads to my FBL unit?

Here is my setup

CC 120 Edge 120 HV
Savox SG-1258TG same as Align 610's
Futaba BLS 251
Mini Vbar with 2 Sats
Optiguard backup same as the Scorpion bug
Gryphon Quasar

I'm not running HV setup yet.

[Xrayted]

Originally Posted by cRash_landing

That's the thing.

Do I really need to plug both power leads to my FBL unit?

Here is my setup

CC 120 Edge 120 HV
Savox SG-1258TG same as Align 610's
Futaba BLS 251
Mini Vbar with 2 Sats
Optiguard backup same as the Scorpion bug
Gryphon Quasar

I'm not running HV setup yet.

The issue is a single servo plug is only rated for about 5 amps. Your BEC is rated for higher that that, but you won't be able to take advantage of that using only one plug, and plugging both into a Y and then back down into a single port is the exact same thing as just using one.

You can use a Y, as long as each one of the BEC leads ends up going to different ports on the FBL unit somehow, so the Y may need to be shared between one of the BEC leads and something else that's plugged in the FBL unit, not both BEC leads into the Y.


This irony I see here is you are using a backup guard which is taking up one of the ports, however using only one BEC lead means you will have a higher likelihood of having a brown out where the bug would be needed.

It's like installing an alarm on your car that disables the door locks.

[RasmusDK]

Could you maybe put a y cable between one bec wire and backup guard?

[cRash_landing]

Originally Posted by RasmusDK

Could you maybe put a y cable between one bec wire and backup guard?

The problem is the Mini Vbar has only two power ports and the bug I was told that can be plug to any port.

RXA - Aux?
RXB - power port
RXC - power port

I found this last night while looking for answers

http://www.flpflightteam.co.uk/~flpfligh/?p=3897

He did the same here, not sure if it work though.

And the testing of the Quasar here

http://www.solarfreaks.com/gryphon-q...ting-t562.html

http://www.archeli.com.au/forums/sho...d.php?t=152609