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Other › i want to take recever bat out
11-26-2006 05:29 PM  11 years agoPost 1
flyboy5090

rrNovice

staten island

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ha people i am new rr and just got my first logo14.i would like to loose my recever battery by sodering a BEC REGULATOR to my speed controler.so when i plug my battery in i will get power to my recever.or i am asking for a problem.i have a jazz 55-10-32 45-07
3700 10s.thanks

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11-26-2006 05:39 PM  11 years agoPost 2
lowflyer101

rrKey Veteran

garden grove, CA

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I never use rx battery on electric heli. on my logo I make main lipo with 2 connect . 1 for bec . 1 for esc. this way I can trim the heli without main motor spinning up.

<-freedoom flyer->

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11-26-2006 06:13 PM  11 years agoPost 3
Lorents

rrElite Veteran

Oslo, Norway

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Hi,

You can use a UBEC to power the rx from the main battery (the white thing underneath the ESC). Some people have experienced glitching by using the ubec, so I have added a ferrite ring to the lead from the UBEC to the rx - seems to work great.

Here is the one I use:
http://www.readyheli.com/45_Volt_Ul...EC_p/ubec45.htm



What comes around goes around.

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11-26-2006 09:05 PM  11 years agoPost 4
LogoHeli

rrVeteran

Brisbane, Queensland, Australia

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GDay Lowflyer,

just thinking to do the same thing that you have done. The rx batt just adds that extra weight that i dont need. COuld you share how you wired your UBEC up to allow you to power the servos up seperately to the main motor?

Lorents, do you have shrink wrap over you ferrite ring/wire? From what i can see you have cable sleeving to where you attatched the ferrite ring, and there after. Is that right?

Cheers fellas

heli+ground/heli+tree/heli+bush=not good

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11-26-2006 10:20 PM  11 years agoPost 5
Lorents

rrElite Veteran

Oslo, Norway

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Lorents, do you have shrink wrap over you ferrite ring/wire? From what i can see you have cable sleeving to where you attatched the ferrite ring, and there after. Is that right?
Thats right, I like it nice and tidy

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11-26-2006 11:51 PM  11 years agoPost 6
flyboy5090

rrNovice

staten island

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thanks for the help full tips. to tell you gys the trouth i built this helli from all good advice from this form and i am very happy with the out come.i could not believe the power of the logo14 thanks.

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11-27-2006 12:44 AM  11 years agoPost 7
KC

rrElite Veteran

WA

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I'm using a Ultimate-bec too with a 55-10-32, its soldered onto the battery side of the speed controller right at the ultra-plug soldering points for the power lines.

fwiw, my ubec came with a ferrite ring, just wrap the ubec servo lead through it a few times and it will hold its own...over 200 flights so far and no signs of glitching.

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11-27-2006 07:53 PM  11 years agoPost 8
chopola

rrNovice

w. hollywood

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go to this link right here and it shows a very clean way of soldering up your connections

http://www.logoheli.com/esc_hookup.htm

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11-27-2006 08:52 PM  11 years agoPost 9
LogoHeli

rrVeteran

Brisbane, Queensland, Australia

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But does anyone know how to hook it up, so that if i just want to power up my servos seperate from the motor, i can do so?

Cheers

heli+ground/heli+tree/heli+bush=not good

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11-27-2006 09:28 PM  11 years agoPost 10
Lorents

rrElite Veteran

Oslo, Norway

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I soldered the wires from the ESC and UBEC together. If I want to power up the rx only I just use a rx battery

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11-27-2006 10:03 PM  11 years agoPost 11
chopola

rrNovice

w. hollywood

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I dont understand what u mean by powering servos seperate from the motor.... If you dont want the motor to turn on either disconnect the thr connection from the Rx or disconnect the motor leads from the esc or just use your throttle hold on your Tx. you will not want too many connections soldered in for reliability

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11-28-2006 02:28 AM  11 years agoPost 12
lowflyer101

rrKey Veteran

garden grove, CA

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GDay Lowflyer,

just thinking to do the same thing that you have done. The rx batt just adds that extra weight that i dont need. COuld you share how you wired your UBEC up to allow you to power the servos up seperately to the main motor?
i got some pic of my lipo wires here,

i use 7s1p ( 4s+3s) connect thur serial cable

sorry about low quality cell phone camera,,
I dont understand what u mean by powering servos seperate from the motor.... If you dont want the motor to turn on either disconnect the thr connection from the Rx or disconnect the motor leads from the esc or just use your throttle hold on your Tx. you will not want too many connections soldered in for reliability
in the first picture above, to power the servos and rx.. i connect the Bec. to lipo only. the ESC /motor remain disconnect from the lipo.. it prevent the motor to turn on without disconnec the wires from motor/esc. and when i really to take off, i will connect the esc to the lipos.

now a day throttle hold is a must have on every TX, but accident can happen anytime.. it happened to me many time on trex 450 , the throttle hold switch accident turn back down.. make the whole heli spinn up.. on big heli ,, i guess the it could be serious damage to heli and pep.

this method work the same way as stock trex 600 with separated Rx/Esc batteries. only I use same main lipo to power RX/ESC separated.

<-freedoom flyer->

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11-28-2006 07:40 AM  11 years agoPost 13
KC

rrElite Veteran

WA

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logoheli,

if you want to power up the electronics w/o turning on the motor, you can also create a duplicate model memory in your radio

make all throttle values zero across normal flight mode and each idle-up mode.

that way you can make adjustments on the ground in idle-up w/o powering up the motor, just remember to copy the adjustments to the model memory you use for actual flying.

OR....

unplug the ubec lead to the receiver and run a separate 4.8v pack to the receiver through the throttle channel or other spare channel on the receiver .

---

either method works for powering the electronics so you can make adjustments without powering the motor up

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11-28-2006 08:14 AM  11 years agoPost 14
lloyd

rrKey Veteran

Perth,Australia (South African)

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hi chaps

all i do to trim out the heli is pull out my ubec plug from reciever and plug a rx battery inn...........i guess its all the same...

lloyd

electrics DONT need to auto

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11-28-2006 09:48 AM  11 years agoPost 15
lowflyer101

rrKey Veteran

garden grove, CA

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why you have to disconnect the ubec from rx???? as long as you did not connect the esc to main lipo. the motor can't spinning up . motor get the power from esc not rx. only signal. I see no point of disconnect the u bec and replace it with rx battery. u bec only supply 5 volt to rx, so do the rx battery, what is in the point of remove ubec from rx. why don't you connect rx battery to ubec insteal . save all trouble with connect and disconnect wires from rx, that may sat on place that hard to reach.

<-freedoom flyer->

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11-28-2006 05:59 PM  11 years agoPost 16
KC

rrElite Veteran

WA

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forst I presume he is asking how to adjust the heli in idle-up on the bench without cutting his head off...a legitimate concern.

see my post before that to see my point about using a separate batt on the ground, you'll see that my ubec is hardwired onto the battery side of my esc so that when I plug the battery to the esc, my ubec is powered on.

If I dont connect the lipo to the esc, then the ubec cant be connected to the lipo in my case (and some other folks who wired this way not knowing any better)....is it stupid? probably but it works for me as well as your method works for you dude

in practice though, I use the duplicate model memory because I don't carry a spare rx batt to make adjustments in the field.

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11-28-2006 07:17 PM  11 years agoPost 17
chopola

rrNovice

w. hollywood

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THROTTLE HOLD PEOPLE!!!!! THATS WHAT ITS FOR!!!!SIMPLE AND EFFECTIVE. AND IF YOU CANT KEEP YOUR THR HLD FROM GETTING BUMPED ON WHILE U HAVE IT ON THE BENCH, THEN YOU PROB SHOULD'NT BE FLYIN A HELI.....LOL!!!!

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11-29-2006 12:43 AM  11 years agoPost 18
KC

rrElite Veteran

WA

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chopola, been there done that huh?

with a radio that requires you to actually be in the idle-up mode that you are adjusting...YOU CANT USE HOLD to adjust the idle-up values on the ground (i.e. JR 10x)

what would you do if you were at the field and had your esc wired the way most of us e-heli noobs do?...theres two ways 1) duplicate the memory and kill the throttle values, or 2) unplug the bec and use a separate pack

hitting hold has nothing to do with what I was discussing.

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