receiver pack for 500 ?

[Kap'n Krunch]

anyone running receiver pack on 500 heli maybe something like this and would it be suitable to run four hv servos
http://www.hyperion-world.com/produc...-LG325-0450-2S

or this one
http://www.skipmillermodels.com/HYPE...35c04002sx.htm

[Diggiz]

I was under the impression that a 500 didnt need one.
A 100 amp esc. Extra weight.

[Abenn]

You don't need a receiver pack if your ESC has a BEC built in, and it's suitably rated. The CC Edge and Talon series have BECs in them, and probably many others do too.

If the built-in BEC is inadequate, the usual solution is to use a suitably rated stand-alone BEC.

You can use a separate Rx battery if you wish, but if you do so, it's recommended that you disable the BEC that's built into the ESC by removing the red wire from the plug that goes from the ESC into the receiver.

As for using 2S LiPos, you need to be sure that your receiver, servos, and gyro can handle its voltage (8.4v fully charged). Many can these days, but if they can't you can look at a 2S LiFe pack or a 4-cell or 5-cell NiMh pack.

[Kap'n Krunch]

this battery here;

http://www.skipmillermodels.com/HYPE...35c04002sx.htm

weighs 23grams, lighter then either the gryphon quasar or the wr super mini g2

but was wondering if a battery of this size would maintain the amperage and volts needed as a receiver pack

[Abenn]

I believe the packs you've linked have a minimum C rating of 25, which means they should be good for 10A. To be comfortable, I would not run them at any more than 5A which, by coincidence, is the rating for the CC BEC http://castlecreations.com/products/ccbec.html when run on 6S, which weighs only 11 grammes. But, if your receiver, servos, and gyro are drawing 5A (I'm not saying they will do), the battery will only last for less than 5 minutes.

So, why do you want to use a battery instead of a BEC? What ESC are you using?

[Kap'n Krunch]

Originally Posted by Abenn

I believe the packs you've linked have a minimum C rating of 25, which means they should be good for 10A. To be comfortable, I would not run them at any more than 5A which, by coincidence, is the rating for the CC BEC http://castlecreations.com/products/ccbec.html when run on 6S, which weighs only 11 grammes. But, if your receiver, servos, and gyro are drawing 5A (I'm not saying they will do), the battery will only last for less than 5 minutes.

So, why do you want to use a battery instead of a BEC? What ESC are you using?

Im running a kontronik 100lv @5.6v and as for running a battery instead of a bec is just an idea mks states @7.4v current draw is 2.5 amps (max) per servo ...
I think id prefer the gryphon polaris all day long over the CC but dont think it would be enough bec
regardless. The above 400mah pack is 35c. Also I have a couple thunder power 3s 850mah packs rated at 65c I could break those down into 3 2s packs would that mean there still rated at 65c ?

[Danny Dugger]

Western Robotics Hercules Super Mini BEC will do what you need for HV. It can do from 5 to 8.2V and 10A continuous, 20A peak. I have one on my 500 with MKS servos.

[Abenn]

If you break down a 3S 65C pack to make a 2S pack, it'll still be 65C.

But if you're really planning for 2.5A per servo (i.e. 10A total), then even an 850mAh pack is only going to last less than 5 minutes. At least with a suitably-rated BEC you know that it's going to provide receiver/servo power for as long as the heli is airborne.

Incidentally, I doubt that the servos are going to draw anything close to what the manufacture suggests they can. A while back I checked my T-Rex 550, with three Align 610 servos, and one 620, and got a total amps draw of 1.5A while I was waggling the sticks and restraining the head with my hand. Not the same as flying 3D, I know, but surely it's indicative.

[Solmanbandit]

The above 400mah pack is 35c. Also I have a couple thunder power 3s 850mah packs rated at 65c I could break those down into 3 2s packs would that mean there still rated at 65c ?

I believe the packs you've linked have a minimum C rating of 25, which means they should be good for 10A.

Really guys? You are talking about a 500 size heli. You guys are seriously over thinking this whole matter. You don't need some fancy high c rated battery for a receiver pack. They don't draw that much energy.

As for the need for a receiver battery, I believe it is not worth the trouble or the money to do so. Use a CC 10A BEC and your problem will be solved.

[Kap'n Krunch]

Originally Posted by Solmanbandit

Really guys? You are talking about a 500 size heli. You guys are seriously over thinking this whole matter. You don't need some fancy high c rated battery for a receiver pack. They don't draw that much energy.

As for the need for a receiver battery, I believe it is not worth the trouble or the money to do so. Use a CC 10A BEC and your problem will be solved.

Can a cc 10 run 4 mks hv servo's @8 volts ?

[Solmanbandit]

Can a cc 10 run 4 mks hv servo's @8 volts ?

To be honest, after reading my last quote, I have realized that I made an assumption without all the information needed. Given that scenario, I personally could not say yes or no. First of all, I don't even know which servos you are referring too. So which servos are you using?

[Kap'n Krunch]

Originally Posted by Solmanbandit

To be honest, after reading my last quote, I have realized that I made an assumption without all the information needed. Given that scenario, I personally could not say yes or no. First of all, I don't even know which servos you are referring too. So which servos are you using?

I actually bought the gryphon quasar and know its kind of over kill but hey its kind of like insurance !

but heres the servos im running
mks 9767s hv (cyclic) mks 9780 hv (tail)

[Solmanbandit]

I found the specs. Running those at 8 v would be close. At 6v, it would be no problem at all.