Do i need to use A Power box Or Smat fly on 100cc

[EDGE-540]

Hi





Do i need to use A Power box Or Smat fly on 100cc im usin a 9 ch Spectrom Reciver On it 2 5600 lipo baterry TO Fomeco wover TO swetch 2 Mpi Regelator TO the reciver Is it Emportant to use the Smat fly on 100cc ??

Can you post som Pic of you 100cc power System Plz








Thanx

[buildflycrash]

I've been looking at the same thing. I've decided to KISS, just use two of everything. 2 batteries(a123), 2 switches, 2 receivers.

Plus ignition stuff.

[EDGE-540]

	Quote: Originally Posted by buildflycrash
	I've been looking at the same thing. I've decided to KISS, just use two of everything. 2 batteries(a123), 2 switches, 2 receivers. Plus ignition stuff.

No im using 2 batteriesLipo, 2 switches, 2 regilator and 1 receiver.

[sweetpea]

No you don't have to. For that matter you don't have to on a 40% but many do with the power hungry 8711 servos.

But if you start adding up optical kill/matchboxes/regulators then the powerexander combo like the EQ6 is nice to keep it all together.

[buildflycrash]

	Quote: Originally Posted by EDGE-540
	No im using 2 batteriesLipo, 2 switches, 2 regilator and 1 receiver.

I'm using 2 receivers becouse it totaly seperates the systems and if one fails (at any point in the system) I can still control the plane enough to get her down.

[Stu_D]

	Quote: Originally Posted by EDGE-540
	No im using 2 batteriesLipo, 2 switches, 2 regilator and 1 receiver.

You are good to go with that set up BUT take care when matching your servos .

If you dont get them matched amlost perfectly you have no room for a power

failure .

Stu

[sweetpea]

	Quote: Originally Posted by Stu_D
	You are good to go with that set up BUT take care when matching your servos . If you dont get them matched amlost perfectly you have no room for a power failure . Stu

Actually he does. He has 2 batts. That is the same as I use with the powerexpander. I have no more power than he does if I set my servos wrong and have binding. What won't happen is that the binding servo won't steal power from the other servos, just the battery. Either way......once the batteries are gone.....so is the plane

[Tired Old Man]

If you want to run a full 6 volts to the servos you won't want to use a Powerbox. They reduce the output voltage. If you want to run more than 6 volts the Fromeco regulators work nicely.

A power distribution system on a 35% bird isn't necessary but the advertising tries hard to convince otherwise. Better for sales if you use one, they just hate to see someone do an install without using their accessories. Paying attention to the electrical installation is all you need to do.

[scott m lyons]

Can I run the K.I.S.S method and y harnes after the regs to each reciver so if one battery dies it doesn't lose one side it will run both and when you land and check your batterys you find one dead or low?(Two batts.Two switchess,Two regs.Two y harness,One to each reciver)

[Memo Lomeli]

I have mine with two batteries,one switch (with the AR9100) and one reciver, works excellent!!!

[BISCUIT01]

IS ALL ABOUT PROTECTING YOUR INVESTMENT FOR ME. MY PLANES TWO HAVE POWER EXPANDERS AND I JUST BOUGHT A COMP ARF YAK 3.3M AND THIS ONE HAS A POWER BOX . ITS NOT THAT THIS SYSTEMS CAN'T FAIL BUT I HAVE NOT HAD ANY BAD EXPERIENCES . YOU CAN HAVE A GOOD SET UP WITHOUT A POWER EXPANDER NOR POWER BOX . ITS YOUR CALL . IF ITS IN YOUR BUDGET I WOULD GO WITH A POWER EXPANDER THE PRICE IS REASONABLE.

[wildhare]

	Quote: Originally Posted by EDGE-540
	Hi Do i need to use A Power box Or Smat fly on 100cc im usin a 9 ch Spectrom Reciver On it 2 5600 lipo baterry TO Fomeco wover TO swetch 2 Mpi Regelator TO the reciver Is it Emportant to use the Smat fly on 100cc ?? Can you post som Pic of you 100cc power System Plz Thanx

Let me make a few suggestions. You do not specify which type of Spektrum 9 channel. I have become addicted to the ar9100's features, the simplicity of wiring and reliability of the design. If you have the 9100 skip the power expander parts.

First, lose the MPI regulators. They are weak and could be trouble. Either get better regulators or go to A123 batteries that don't need regulators.

Second, you have way more battery than you need. you have 11,200 mah of power. Your plane will use around 400 mah per flight maximum, this means you are carrying enough power to fly it for at least 25 flights without a recharge.

Third, a better choice than the wolverine switch is the integrated soft-switch that comes with each smart-fly power expander. This allows you to connect the batteries directly to the PE eliminating wiring, cost and weight. This way it's not possible for a mechanical switch to fail.

You do not NEED a power expander, but I have recently started using them for these reasons;

It cleans up the wiring immensely
It give me the fail-safe switch
It will last forever, so I only have to buy it once and I can use it for years.
Only 5 volts going to the receiver, which may reduce internal heating on Futaba 6014 (only a theory)

The setup I use now is 2 A123 2300mah packs plugged directly into a power expander. I use the integrated fail-safe switch and a simple servo extension into a charge receptacle, use a "remove for flight" jumper to turn power off, unplug it to turn power on.

Now, if your Spektrum receiver is an AR9100 all this functionality is built into the receiver and a PE is really redundant. If it's the AR-9000 the PE will make you happier if you can afford it. Not necessary, but nice.

TF

[Mithrandir]

Simple is good... and so is fault tolerance....

IMHO, Batts/Regs and Switches are more likely to fail then a Rx.... SO I would
Dual up on those....

I am not an advocate of the high dollar power expansion systems.... Power distribution is good...
the goal being multiple paths for the power!!!

I installed a RRS with one of my first FASST Installations to get an idea of how often the Rx's would Fail Safe.... the RRS will record that info every time it switches from the primary Rx to the Secondary Rx... (Remember... with the RRS, both Rx's are powered up all the time so the switch
is not noticable)

It turns out, out of the 12 flights, at 4 different locations, I have recorded ZERO F/S occurrances... I will leave the RRS in thru the summer... and if it continues on like this, I will likely take the RRS out and use it for diagnostic/verification on the next plane...

One thing to note about the RRS... look at all the power paths it provides....

http://www.giantcircus.com/Videos/RRS_Explained.wmv

So... do you need a second battery... answer... no... but... is the extra money worth a little extra reliability... IMHO... Yes....

So... do you need a second Rx.... answer... no.... but is the extra reliability worth a little extra money??? IMHO... Yes....

[Edgeman 540]

Edge 540 you don't need to run all that high end electronics on your aircraft.Keep it simple and things will be just fine.I have a couple 40%ers and neither have a powerbox and they both fly great. Just keep in mind that if the"in thing"was to have a shi*ter on the front lawn being used as a flower pot,everyone in creation would be following the trend setter swearing it was the next best thing since sliced bread.

[3D-Seth]

I have a 120" QQ Yak. DA 170 on Greeves pipes, 8711s all around (2 per aileron, 1 per elevator, 3 on rudder - I use matchboxes with no extra power leads to them) Duralite A123s (2 2300mah) directly to the receiver (One single AR 9100), no powerbox or nothing. Servos plugged into the receiver. Nothing else. I like the KISS method (Keep It Simple Stupid). No problems whatsoever.

Too much of a hassel, and not worth the extra weight of the power box/power expander IMHO.

Seth