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E-Sky › The wag is gone, but...............
02-08-2008 05:43 AM  10 years agoPost 1
BOB WHO?

rrKey Veteran

Downey, Ca.

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Yep the wag has disappeared(HBK2-3800kv-dx7/ar6100-gy401-s9257). And all it took was a Futaba 9257 digital tail servo coupled with the gy401. Couldn't get any of three analog servos to behave with the gy401. Even though I have not flown it yet, while dialing it in in rate mode there was no wag or chatter. I was really pleased, but only for a few minutes. Then I smelled that familiar burnt electronics odor. Yes you are correct, the esky esc fried on me. So now I have two questions. 1) What amp esc should I get for my set up and what brand? 2) What tail servo mount should I get for that fairly large servo on the small tail boom of a HBK2? As some of you know, I have had my share of problems with this heli so far. I've only replaced the gyro, tail servo, receiver, and now the esc. And still have not flown it. Thanks for the help!

Bob

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02-08-2008 05:53 AM  10 years agoPost 2
Griffin

rrApprentice

Knoxville TN

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Another toasty esky esc Welcome to the club. I would look at something in the 25-30amp range. Maybe a hacker x-30 if you want quality. Castle creations seems popular too.

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02-08-2008 05:54 AM  10 years agoPost 3
TJinGuy

rrProfessor

Socorro, NM - USA

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Most of the guys seem to run a 25-30A esc. I bought the Dynam 30A but I have yet to try it. The ELE seems to make pretty noises. Some people also use the Hobbywing Pentium 25A.

- Chris

Team New Mexico
TJinTech

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02-08-2008 06:55 AM  10 years agoPost 4
Gregor99

rrElite Veteran

Western Wa

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I 'll point out that the ESC fried shortly after adding a new servo. So its possible that the ESC was taken out by your electronics package drawing too much current. The Esky ESCs are all rated at 1.5amps so depending which swash servos you have, you may have already been close to exceeding that before adding the new servo.
http://www.twf-sz.com/english/products.asp?prodid=0072

My ELE Advanced 30a went into thermal overload last weekend after I replaced the swash servos. I checked the current and the addition of the servos put the total draw up to 1.3 amps. Its BEC is rated at 3amps but 1.3 was enough to overheat it. HD is replacing my ELE, but I'm also getting a seperate BEC. For reference is the current draw I measured on my devices.

Device.....................Current (Idle)....Current (Loaded)
===========================================================
AR6100 (rx)....................................24ma.............24ma
2100t (gyro)...................................66ma..............66ma
HiTec HS-81 Analog tail servo....36ma............425ma
Eflight S75 Analog Servo...............6ma............125ma
JR S285 Digital Servo.................11ma............275ma

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02-08-2008 03:05 PM  10 years agoPost 5
BOB WHO?

rrKey Veteran

Downey, Ca.

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Thanks guys. Yes Gregor, now that you mention it, of course that was it. I don't come from an electronics background so it didn't even occur to me until you said it. The other servos are stock.

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02-08-2008 11:18 PM  10 years agoPost 6
waylander

rrNovice

Edmonton, Alberta - Canada

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the gy401 is also going to pull more power than the stock rate gyro. also, when you were trying the analog servos on the gy401 did you have the switch on the gy401 set to analog instead of digital?

I use a hobbywing 35amp esc with my 3800kv motor on my belt cp due to the servos and gyro i'm using (hs56hb on cyclic, logictech 2100t and futaba 3154 on tail).

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02-08-2008 11:48 PM  10 years agoPost 7
tryan02

rrProfessor

Canton, Missouri

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Thank you for your recent e-mail.

Here is the information you requested.

GY240-
The gyro will draw about 10 mA.

R606FS-
Current Drain: 80 mA (at no signal)

Sincerely,
John G.
Product Support Lead Technician
Futaba Programming Technician
Great Planes Model Distributors

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02-09-2008 12:05 AM  10 years agoPost 8
BOB WHO?

rrKey Veteran

Downey, Ca.

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Thanks again guys. waylander - I had the digital mode turned off on the gy401 when using an analog servo. BTW I got an align 35A esc today. It is model # K10304TA. They make a few models and I just picked up the only one that my LHS had. I hope it will work. I intend to fly tomorrow or Sunday. I've replaced alot of the stock stuff, there's not much more that can go wrong. Is there? I better watch what I say, the HELI gods you know.

Bob

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02-09-2008 12:07 AM  10 years agoPost 9
tryan02

rrProfessor

Canton, Missouri

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Good luck BoB but hey remember we all age, a waggly tail aint all that bad.

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02-09-2008 01:02 AM  10 years agoPost 10
waylander

rrNovice

Edmonton, Alberta - Canada

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The RCE-BL35X is a good ESC, i'm running 2 of them right now and they work great. This bec on this model puts out 6v though so make sure that if any of your servos (especially tail) are 4.8v only to get a regulator.

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02-09-2008 01:04 AM  10 years agoPost 11
fenderstrat

rrProfessor

Aston,Pa

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BOB....before flying...make sure you check the balance of the heli...the HBK is already tail heavy and that is a BIG HEAVY servo(although performs AWESOME)....you may need to move some stuff around to get the heli to balance

Compass helis Support Team
PerformancePlusRC field rep
Mini Titan/SE
TEAM KBDD

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02-09-2008 01:25 AM  10 years agoPost 12
BOB WHO?

rrKey Veteran

Downey, Ca.

My Posts: All  Forum  Topic

waylander-
Thanks for your help. I do not know if the max input for a stock HBK2 servo is 4.8v or if the 6v will be OK. I bet the new digital 9257 can handle the 6v. Does anyone know if the stock servos can handle this output?
Fender-
I know what you mean. I already have the gy401 right behind the battery instead of the deck behind the shaft. I'm thinking of putting the gyro on the shelf in front of the motor. Do you think the motor 'noise' will affect the gyro performance? And does the placement of the new esc really matter?

Bob

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02-09-2008 01:36 AM  10 years agoPost 13
waylander

rrNovice

Edmonton, Alberta - Canada

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unfortunately, the 9257 will NOT take 6V, most servos designed for the tail do not support 6v.

also, the esky 8g servo is only rated to 5.3v.

basically you need a regulator between the bec and the receiver or you'll fry all the servos. the RCE-BL35G would have been a better ESC (I understand that they didn't have it) or a separate ubec might be needed.

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02-09-2008 01:51 AM  10 years agoPost 14
BOB WHO?

rrKey Veteran

Downey, Ca.

My Posts: All  Forum  Topic

Actually there is another shop around here that does have the RCE-BL35g. I found that out after I got the one we're talking about. I am a good customer (BELIEVE ME!) of the shop that I got the K10304TA so he will let me return it. So will the RCE-BL35G work with my set up without a regulator? Thanks waylander.

Bob

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02-09-2008 01:57 AM  10 years agoPost 15
waylander

rrNovice

Edmonton, Alberta - Canada

My Posts: All  Forum  Topic

yep, the 35G outputs at 5v so you should be fine. the reason they upgraded the 35X to 6v was because most servos (that can handle 6v) perform better at 6v which is what they wanted for the Trex 450se v2 which the RCE-BL35X comes stock in.

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02-09-2008 02:01 AM  10 years agoPost 16
BOB WHO?

rrKey Veteran

Downey, Ca.

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waylander I am wrong again. The model that the other shop has is AGNE35G which also has a 5v output. Will this one be OK?

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02-09-2008 02:57 AM  10 years agoPost 17
waylander

rrNovice

Edmonton, Alberta - Canada

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ya, any esc 30amp and above with a built in bec which outputs 5v is ok.

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02-09-2008 03:19 AM  10 years agoPost 18
Sween

rrNovice

Hart ,Michigan,United States of America

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how about one of these , i can get one of theses for sure in the morning, ElectriFly Silver Series 35 amp,

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02-09-2008 03:25 AM  10 years agoPost 19
waylander

rrNovice

Edmonton, Alberta - Canada

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the electrifly looks like it will work. 35amp esc and 5v/2A bec.

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02-09-2008 03:37 AM  10 years agoPost 20
BOB WHO?

rrKey Veteran

Downey, Ca.

My Posts: All  Forum  Topic

Thanks waylander. If you had not stopped me, I would have fried something else probably. I appreciate the help. I'll post with my first test flight.

Bob

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