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Century Radikal E640 - Swift 16 NX
› Brushless FP Hummingbird ESC Question
04-30-2004 04:08 AM  13 years agoPost 1
ReadyHeli

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Jupiter, FL

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I am setting up my FP HummingBird (G10) as a brushless flier.

I have the pixie 7 (tail esc) and the p10 (main esc) with a Himax 2015-4100 mated to a 10 tooth pinion, and a GY-240 HH Gyro. They are all connecting into a Hitec Feather RX.

I am using a 3cell li-poly for batt.

My question is this:

If anyone has a similar setup, can you kindly share with me your ESC settings?
Cutoff Voltage, Brake Type, Cutoff Type, Throttle Type, Soft Start, Current limiting...Is there a different setting for tail esc?

Thanks In Advance guys.

JG

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04-30-2004 05:51 AM  13 years agoPost 2
pbmax

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Olympia, WA - USA

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P10 settings:

cutoff: 7.2v for 3s poly packs
brake: none!
cutoff type: soft (no sense dropping the poor guy)
Throttle type: fixed
Soft start: Optional really... I tried soft and very soft but got bored
waiting, just don't ham-fist the throttle when taking off

On the tail ESC, disable the BEC, disable the cutoff, and no soft start (not necessary with direct drive - don't think the P7 has this anyways).

I run the same ESCs in my setup. Works extremely well!

pbmax

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04-30-2004 12:57 PM  13 years agoPost 3
ReadyHeli

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Jupiter, FL

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PB

Thanks Man!

I appreciate the quick and knowledgable response.

Will have some pics for you in a bit.

JG

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05-01-2004 04:11 PM  13 years agoPost 4
ReadyHeli

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Jupiter, FL

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himax was backordered through helihole, so had to get from deetee.

not flying this weekend i guess.

can wire up everything except motor.

crap.

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05-01-2004 05:08 PM  13 years agoPost 5
fontie

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England near Heathrow airport

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cutoff for 3s lipo should be 9v. The instructions that come with some p10's are wrong. 7.2v is to low Lipos shouldnt be discharged more than 3v per cell !

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05-01-2004 05:13 PM  13 years agoPost 6
poerQwa

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Rotterdam, The Netherlands

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Are you sure to set cut-off voltage to 7.2 ?

Wouldn't that leech the Lipo a bit too much. I always understood to keep a 3V base line as lowest per cell so in this case I'd think 9V?

Greetz,

Marc

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05-01-2004 06:44 PM  13 years agoPost 7
ReadyHeli

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Jupiter, FL

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you guys are right.

3.2 to be exact.

charged a lipo cell is around 3.7.

good catch fellas.

jg

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05-01-2004 09:45 PM  13 years agoPost 8
ReadyHeli

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Jupiter, FL

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guys:

on the tail esc, the pixie 7. do i clip the red from the pixie 7 going into the gy-240? or do i clip the red from the gy-240 going into the rx?

please help..

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05-01-2004 10:19 PM  13 years agoPost 9
clovis

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Montreal

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The only thing with high cutoff is an heli going down. Better have a low cutoff and check your battery with a voltmeter.

You need to clip the red wire from the tail esc. If not, the bec from the tail will fight again the bec from the main. In a bigger heli normally the gyro is connected to a servo. The receiver provide the supply to the servo via the gyro. Trying to clarify things. The main esc is getting power from the battery. The main esc bec is providing the power to the receiver and the receiver distribute it to the other heli component including the gyro. In a micro with a tail motor you do not need the bec from the tail because you getting all your power from the main esc bec. So cut the red wire coming from the tail esc to the gyro.
Bye,
Clovis

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05-01-2004 11:18 PM  13 years agoPost 10
ReadyHeli

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Jupiter, FL

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Ok, with the exception of the Himax, (Which helihole has on backorder), i think i am all done wiring up the separates.

Pics attached.

Here is my question, I am using the phoenix link to program the P10, but how do i program the tail?

I assume plug gyro from channel 4 into channel 3 (throttle?)

i have red lead clipped and plugged into gy-240.

Please let me know.

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05-02-2004 12:35 AM  13 years agoPost 11
clovis

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Montreal

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For the pixie 7 go to the castlec creation web site and download the manual. It is well explain how to program it.

For your question about how to connect the gyro to the receiver. I am not sure what you talking about but throttle is on channel 3 and it should go to the main esc, the phoenix 10. The gyro connect in channel 4 and the output of the gyro should go to the tail esc with no red wire from the gyro to the tail esc.

Bye,
Clovis

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05-02-2004 03:22 AM  13 years agoPost 12
pbmax

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Olympia, WA - USA

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No, your 3s cutoff should be 7.2v. If you go below 9v under load, it's no big deal. It's the unloaded voltage that you should be worried about. We've gone over this topic countless times!! I used to be a 9v stickler, but a number of people showed me the error in my ways. I fly all my 3s packs with 7.2v cutoff and I have no reduction in flying times. If you set it to 9, you don't get much flying time at high power.

When you hit the 7.2v soft cutoff, bring your heli down and consider that pack done.

pbmax

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05-02-2004 01:21 PM  13 years agoPost 13
twguns

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Indianapolis, IN

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Noticed that you are planning to run a 10 tooth pinion... Won't that be a bit high for the head speed???

Probably you will want an 8t... The only place I have found 2mm ones (to fit the Himax) are from HeliHobby...

bigTim

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05-02-2004 06:06 PM  13 years agoPost 14
pbmax

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Olympia, WA - USA

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If you're going to use 3s packs exclusively, I agree. An 8tooth will give you better flight times and throttle resolution.

Don't buy from helihobby, buy cheaper from tower! Same pinion:

http://www2.towerhobbies.com/cgi-bi...p?&I=LXBPB0&P=7

I use a 9tooth with mine because run both 2s and 3s packs.

pbmax

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05-02-2004 06:17 PM  13 years agoPost 15
ReadyHeli

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Jupiter, FL

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what kind of flight times can i expect from my 3S with a 10t?

JG

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05-02-2004 09:20 PM  13 years agoPost 16
pbmax

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Olympia, WA - USA

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I was getting 10 - 15 on an etec 1200mah 3s pack, but the pack and the motor were exceedingly hot (with the 10tooth).

pbmax

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