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Revolution Models . CarbonXtreme . Midland Helicopters

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Aerial Photography and Video > Large electrics - BEC or REG?
 
 
daytonabeach
Elite Veteran
Location: Oslo, Norway

My Posts This: Topic  Forum

What are you saying Ros, are you afraid?

SPEAK UP, CANT HEAR YA!

Never argue with an idiot, he'll drag you down to his level and beat you with experience...
11-07-2009 10:57 PM
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nooobs
Elite Veteran
Location: Toronto, Canada

My Posts This: Topic  Forum		LOL... reminds me of this scene... go to 5:47... HAHA

11-07-2009 11:43 PM
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fergus
Key Veteran
Location: Ireland

My Posts This: Topic  Forum		^^^ LOL

Regards

Fergus
11-07-2009 11:49 PM
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KarbonBird
Key Veteran
Location: Australia

My Posts This: Topic  Forum		I ordered one of these some while ago:

http://www.dimensionengineering.com/SportBEC.htm
11-08-2009 12:40 AM
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fergus
Key Veteran
Location: Ireland

My Posts This: Topic  Forum		That unit is only good up to 8s tho so for large electrics it is not suitable.

Regards

Fergus
11-08-2009 12:59 AM
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PhotoShip One
rrAdvertiser
Location: Arizona & Taiwan

My Posts This: Topic  Forum		but, using two of them (one on each 5s or 6s pack) and isolated with diodes could make them a possibly viable solution.

Design Team - PhotoShipOne
11-08-2009 01:04 AM
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nooobs
Elite Veteran
Location: Toronto, Canada

My Posts This: Topic  Forum		Yup, that would work. Fergus, remember you're only tapping into one pack.
11-08-2009 02:00 AM
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Seablade
Key Veteran
Location: floating around

My Posts This: Topic  Forum		Dam it !#*#@%%$$$$$
I really hate waking up at 3am with new ideas on how to spend money!%#@!$$$ and you guys are responsible all of you #*&^@$$$$ drawing board %$#@!$$$$ :

"Vini, Vidi, Velcro"
11-08-2009 03:27 AM
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nooobs
Elite Veteran
Location: Toronto, Canada

My Posts This: Topic  Forum		LOL

dude, we'd be dangerous together at my LHS...
11-08-2009 03:31 AM
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Seablade
Key Veteran
Location: floating around

My Posts This: Topic  Forum		oh god you have no idea!

what's latin for black hole? helicavus exsequor!

"Vini, Vidi, Velcro"
11-08-2009 03:40 AM
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Seablade
Key Veteran
Location: floating around

My Posts This: Topic  Forum
Quote 
But why use something that is so damn RF noisy????
Agreed, The Western Robotics Hercules BEC it is noisy as you say and they warn about it being so.
It is not an issue with the 2.4ghz and it's location is well out of the way so it does not interfere with any other components.

The voltage reduction through the Step-Down tail voltage regulator is .8v to bring 6v down to 5.2v for the Rx side of the system.
The #WRL-STVR version has an LED so you can see the power is on the system.
http://www.western-robotics.com/STVR_hp.html

"Vini, Vidi, Velcro"
11-08-2009 04:48 AM
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BULLSEYE
Senior Heliman
Location: Texas

My Posts This: Topic  Forum		Any reason why nobody has mentioned the Koolflight UBEC? Anything wrong with them. I believe tabbytabb, along with a few other veterans are using them in a redundant configuration (with diode).

http://www.koolflightsystems.com/ultimatebec.htm
11-08-2009 05:07 AM
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daytonabeach
Elite Veteran
Location: Oslo, Norway

My Posts This: Topic  Forum		Is it possible to make a backup of the BECs, like adding a regular Nimh pack so it engages if the BEC fries?

When it comes to weight, i dont think 2-300 gr extra in regular Nimh packs would matter THAT much anyway for large electrics like MJ2, i mean for saving weight over a BEC system.
I think instead youll increase the chances of a potential failsource allot more than a regular Nimh system, at least the feeling i get buy reading posts about BECs failing, frying etc.
And of course, now all you will say, it never happened to me

Never argue with an idiot, he'll drag you down to his level and beat you with experience...
11-08-2009 08:32 AM
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Seablade
Key Veteran
Location: floating around

My Posts This: Topic  Forum
Quote 
Is it possible to make a backup of the BECs, like adding a regular Nimh pack so it engages if the BEC fries?

just use a diode on the output of the pack so your not inputting voltage to it from the BEC and connect it to a spare channel on the Rx. You have to equate in the voltage drop from the diode.

If your doing the "electric tail" mod then you would have the redundant BEC from the tail rotor so the odds of both BEC's going out are as good as you switching to Lipo's

The UBEC's from Koolflight are supposed to be work well too. I was going to use them based on there reputation, but after the first email he answered about adding the diodes to them he wouldn't answer anymore so I went with Western Robotics as they were prompt and good with info when I emailed them. In two years they've answered every email long after the sale.

"Vini, Vidi, Velcro"
11-08-2009 09:25 AM
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nooobs
Elite Veteran
Location: Toronto, Canada

My Posts This: Topic  Forum		Chris, you can use two UBECs and connect it to your LIPO packs... LOL

...as mentioned several times here... use a diode... they're easy to make.
11-08-2009 09:39 AM
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daytonabeach
Elite Veteran
Location: Oslo, Norway

My Posts This: Topic  Forum		I dont like the word "suppose to work"
I think ill stick with my Nimh system, just ordered two 3700mah packs

Never argue with an idiot, he'll drag you down to his level and beat you with experience...
11-08-2009 10:14 AM
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HeliProz . Ron’s HeliProz South . MTA Hobbies

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Aerial Photography and Video > Large electrics - BEC or REG?
 
 
gtxkid
Senior Heliman
Location: Pueblo Colorado

My Posts This: Topic  Forum		This is a link to a sight that i have bought stuff from for a 3-4 years now. They have realy grown.

http://dimensionengineering.com/

Greg

Logo 10 3D--NEU 1910 1Y motor--Castle creations 45HV and 80 AMP--Gy401 w-9254--Futaba T12ZH --JR ser
11-09-2009 05:06 PM
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Revolution Models . CarbonXtreme . Midland Helicopters

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Aerial Photography and Video > Large electrics - BEC or REG?
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