I have the Flatout RCU bipe on the work bench right now and its going quite well. This is my first foamy and my first electric, "If you don't count my blade CP Pro". I managed to figure that one out, well cause it was already to go! I really don't have a clue when it comes to electrics.

So I am at the stage where I need to pick out some electronics. I would like to use the recomended rimfire brushless motor 22M-1000 and thats about as far as I got.

Concerning ESC, recomended is the Great Planes Silver Series 8A Brushless ESC 5V/1A BEC there is also the Great Planes ElectriFly BL-8 Brushless ESC looking at the stats they both look the same to me with only a few dollars price difference. Which one is better?

Servos and receiver is where I'm really hung up at, doing some research I read that the ESC won't or can't run high torque servos, well what is considered "high torque" in a micro servo, I would like to pack as much muscle into that plane as possible, I think the recommended minimum torque is 15 oz.in.

I guess in the end all I'm asking is for you all to pick my gear for me, so that the motor the ESC and radio gear all work together. The only stipulation is must us the 22m-1000 rimfire motor and radio gear must work with my Futaba 9c

Thank you for your time

Justin

Justin,

I fly a bip with the Rimfire 22M-1000 and the ElectriFly BL-8 Brushless ESC. I use the UH small servos (like HS55) and 7.4 or 11.1 V 1000mah battery. It depends on what's left after I fly by other planes as to what battery I use. The 11.1 flies faster though.
I'm not sure which ESC is the "best" I think the two you gave are about equal as far as I can tell. The issue I have though is that the Electricfly is on the "short" side as far as the Amps are concerned. If I had it to do over I'd get at least the 12 or 15 amp ESC.

would the 12 or 15 amp ESC work with the rimfire? What advantages are there for having more amps?

The 12A or 15A ESC would work just fine, the advantage for you is that if you were to pull more than 8A to 10A you won't melt the ESC because your pulling to many amps, and in turn, fry your lipo when you can't get the thing off full throttle in the air. (i learnt that one the hard way) I dont think you mentioned how many servo's you are running, but if you are concerned about the ESC's BEC supply, you can buy external BEC systems that will give you up to 3A. I currently use a switchable to 5 or 6Volt 3A external BEC on my elecric helo. That BEC is running the Receiver, the gyro, and 4 digital mini servo's that have a 2.2kg max load, that system has been flying successfully now for well over 18 months, and not one sign of failure at all.

Hope this give you some ideas.

Cheers guru

So I guess the flip side to that is... to high amp ESC you could fry your motor? is it a happy medium?

I would be running three servos

Justin,
Here's the specs for your motor:
SPECS: Motor Diameter and Length: 28x29mm (1.1x1.14")
Stainless Steel Output Shaft Diameter and Length: 3x12mm
Weight: 42g (1.48oz)
Input Voltage: 7.2-12V DC
Magnet Wires Temp Rating: 160°C (320°F)
kV Rating: 1000 RPM/V
Max. Constant Current: 11A
Max. Surge Current: 15A
No Load Current: .65A
Internal Resistance: 235 milli-ohms
As you can see the "surge" current is 15A. So, with a 12 or 15 amp ESC you would not really burn up the motor. But, if you run it at the surge current for to long it will over heat and "Could" ruin the magnets in the motor. Some ESCs have a feedback circuit that tells the ESC you're exceeding the surge current for to long or that the motor (or ESC itself) is or can overheat.

Hope this helps.

With a 12a or 15a would that allow my to use more demanding servos? or is that amp rating more for the motor demands.

Please forgive the intrusion...... I run across this while researching an answer to my similar questions.

If I use a 1600mA 20C 3cell LiPo and...... hypothetically a......

A small 8A continuous 10A? surge, brushless and a 12A ESC I'm ok right?
What if I run maybe a 15A continuous ummmm 18A? surge, brushless and 12A ESC? Will it pop the ESC or will the ESC only supply the 12A and limit the motor power?
What if I run a 8A continuous 10A? surge, brushless with a 100A ESC? will the motor only pull the 8A or will I pop the motor?

It's for my info and I'm trying to pick parts that are portable between varying sized (within reason) electric planes.

Really appreciate the help. What I've been told doesn't correspond with some stuff I've read.


Mybe I should have started another thread. Oh, well.

Servo current draw is governed by the BEC within the ESC. If this is an issue you could use another battery and not use the BRC in the ESC. To do this you must disconnect the RED wire (I believe) from the Connection that goes to the Receiver from the ESC. Check out the web to be sure. Many guys do this. Check on eliminating the BEC.

I would consider that, but I don't want the performance loss of the extra pack.
Do you guys think with the 8 amp or the 12 amp ESC would run 3 servos with aprox. 20 oz/in torque without any problems?

Justin,
The ElectriFly BL-8 Brushless ESC specs say the BEC is rated at 5volts 1.5amps. This means that's what tyhe BEC will supply from the battery no matter if its a 12 amp 15 amp or 20 amp. Also, there is a WARNing that if you try a 12 cell Nicad or 4 cell Lipo you will burn out the ESC.

Hope this helps.

Hi guys.

I had the RCU Bipe for a year and 1/2 and it was my first electric plane and I did use the 22M-1000 w/ V-pich and the BL-12 with 3 JR SM-15 servos and a E-Flite 75 for pitch. Never had a problem with the power and I was using a TP 730 Lipo. Then I change the set up for the 10-Amp Pro Brushless ESC by E-Flite with the Park 370 BL Outrunner, 1200kV motor by the same company and kept the same battery with 3 servos, never had a problem with it and plenty of power to get out of a hover. Ofcorse with out the V-Pich set up and the extra servo did have more power since was lighter. My point is that any of this ESC over the 10 Amps will work fine for 3 and even 4 sub-micro servos with out an external BEC but always is good to go with a higher ESC get something between 10 and 20 Amps and don't go above 900 mah, to heavy and the only thing they will give you is a few extra minutes of fly time. Remember to try to keep all 3 ( Batt/ESC?Motor ) with about the same range of performance. Ex. If your ESC have a Max. Constant Current: 11A and a Max. Surge Current: 15A your motor should stand about the same and the battery for safety should be rated about the same. If you go with a bigger batt. the you need to watch your trottle management or you will burn the ESC and even the Motor ( depend their rating ) thats why is good to have the next higher Amp rated ESC from the recomended.

Justin

If you have doubt with the ESC get the CC Phoenix 10 it dose said that can handle up to 4 sub-micro servos.For your question of Great Planes Silver Serie or ElectriFly BL Serie, the BL have some other features than the silver dont have. This will be your choice what you whant from the ESC, stay over the 10 Amps. For the servos, you can go with the Hitec HS-55 or 65HB ( stronger gear and more torque ) or Futaba S3110 Micro High Torque servo and for the receiver Hitec have a good one dont remember numbers for this one or the Futaba R114F FM Micro receiver ( High Band or Low Band dont know the one for Futaba Tx ) or the JR Sport RS6UL 6-Channel Rx Neg Shift FUT/HRC.

Hope this help, feel free to ask any other question.


Fernando.