ESKY digital servo WARNING!!!!  
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ESKY digital servo WARNING!!!! - 8/30/2008 4:26:03 PM   
Tommyjoking


 

Posts: 217
Joined: 8/5/2006
From: Beebe, AR, USA
Status: offline 		On the 24th flight of my new HBK2 it suddenly came back at me (tail in) ...I went full forward on the sticks and that did little to slow it down. I moved and cut the throttle as it passed me and luckily got away with little damage, scuffed up tail and main rotors. I found that my front servo was locked in the full up position, you could hear the motor just a spinning away but no movement. I am in the habit now of taking failed servos apart because often they can be fixed at no cost. Flipping a gear around 180 degrees and such.

Well there is a defect with the new esky digital servo EK2-508. There is enough room in the case at the back cover for the motor to slide back and disengage the pinion from the first gear! Thats what happened to mine, for whatever reason the motor loosened and slid back. I made an easy fix for this by simply CA gluing a piece of .060 plastic in the back cover over the motor. Now it cannot do that again, I repeated this with all 4 servos for safety's sake. I know they are cheap servos but I am impressed by how smooth they are for cheap servos LOL! This tip might save you some bux on servos and maybe save you from a bad crash.

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       Post #: 1

RE: ESKY digital servo WARNING!!!! - 8/30/2008 5:17:56 PM   
blk822



Posts: 485
Joined: 8/13/2007
From: Kent, WA, USA
Status: offline 		Are you sure it wasn't the crash that moved the motor????

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I never crash.....I just land reaallllyyyy fast

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       Post #: 2

RE: ESKY digital servo WARNING!!!! - 8/30/2008 7:59:13 PM   
Tommyjoking


 

Posts: 217
Joined: 8/5/2006
From: Beebe, AR, USA
Status: offline 		Yea I am pretty sure considering I had the stick at full forward and it was still coming at me backwards fast. There was no crash....it slid in to the ground tail first with training gear on....but no hard blade strike or tip over...blades coasted to a stop. This heli has not been crashed yet. I messed with an aileron servo pushing on the pinion gear and it also popped loose very easy...the other two servo motors seemed in there pretty tight.

(in reply to blk822)
       Post #: 3

RE: ESKY digital servo WARNING!!!! - 8/30/2008 10:27:54 PM   
hfenn


 

Posts: 570
Joined: 1/1/2003
From: BARNWELL, SC, USA
Status: offline 		I jus ordered four of those servos along with another 3900Kv motor and yellow bare bones from JAG. I have 42 flights on the first one now, but hit the tree on the last one while trying nose-in (been doing that on the 22E and Black Hawk) and broke a couple of plastic bits in the head and stripped the main gear, which I ordered from US Hobby Supply. Bad timing for my crash (Thursday evening) because today I just got two batteries that I had ordered for it.

(in reply to Tommyjoking)
       Post #: 4

RE: ESKY digital servo WARNING!!!! - 8/30/2008 10:30:16 PM   
Disney1



Posts: 621
Joined: 11/21/2007
From: Orlando, FL, USA
Status: offline 		This is a common problem on ALL Esky servos, I had 2 stock NON digital ones do the same thing, a shim corrected the problem.

R N Sr

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The only stupid question is the one you forgot to ask.

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       Post #: 5

RE: ESKY digital servo WARNING!!!! - 8/31/2008 2:25:18 PM   
Tommyjoking


 

Posts: 217
Joined: 8/5/2006
From: Beebe, AR, USA
Status: offline 		hfenn Bud you beat me by almost 20 flights before the crash...no surprise there!! I got 26 in today before I ditched it. Have not flown in a week and it showed. Went to a new park near my house with super thick short grass, perfect crashing surface LOL! Wind out of the east so I had to fly with a tailwind to keep the sun out of my eyes, I hate flying with the wind behind me. Might have to get a different gyro, the stock one is ok for hovering but it kept letting the tail just turn 15-20 degrees at random in FF. Hard on a noob like me. Tried upping the gain but it did little. Got out of shape and did the old toilet bowl of death and WHAM. All I am doing at this point is flying forward tail in with a little turn here and there then flying it back to me backwards. I have not got the guts up to go side to side with any kind of speed yet....if I had a backup King I would probably give it a go.

The damage was pretty light, from what I can tell. Main Gear, blades, slight curve in tail boom (i can fix that). Gonna strip it and make sure the mainshaft is not bent. Time for a belt anyway. Going up a tooth on the pinion as well as lift seems very soft with any altitude, cranked up the pitch travel and I still think I need more speed.

enjoy your time off man
Tommy

(in reply to hfenn)
       Post #: 6

RE: ESKY digital servo WARNING!!!! - 9/1/2008 2:03:17 AM   
homeunt


 

Posts: 989
Joined: 2/10/2008
From: Ectobicoke, ON, CANADA
Status: offline 		HA! I called like 2 months ago that teh digi eskys are still crap.
THEY FRIED UP in the air...

BTW, Mystery 30A ESC
Mystery 5000kv
Esky 25A ESC
are firehazards too

Go with hi-tec or Towerpro, they don't fail but they do chip fairly easy (That means if you crash, it's more volunerable than Esky)

_____________________________

This hobby is funny, if I got cash, I got no experience.
If i got experience, I see a giant hole on my wallet.

(in reply to Tommyjoking)
       Post #: 7

RE: ESKY digital servo WARNING!!!! - 9/2/2008 5:51:25 AM   
ArrowNaughtic



Posts: 1818
Joined: 11/20/2006
From: Kent, WA, USA
Status: offline 		Ha! and like I said 2 months ago in your first thread........... right.......
Tommy, good catch on the servo motor thing! And good fix too. Thanks for the how to pics and the clarity to explain the issue along with a fix. So many of the guys are just posting horror storys with little to no explanation. As I have stated many times before a lot of the issues are nothinhg more than crash related or inexperience problems which easily get blamed on the manufacturor. Yours is a justified problem with a fix included. Very refreshing to see someone find fault and then offer a easy fix to solve the issue. My hat is off to you!


_____________________________________________________________________________________


Of all the things I ever lost....................................... I miss my mind the most!

(in reply to homeunt)
       Post #: 8

RE: ESKY digital servo WARNING!!!! - 9/2/2008 10:55:15 PM   
Empty Wallet


 

Posts: 269
Joined: 1/2/2008
From: Hackettstown, NJ, USA
Status: offline
quote:

ORIGINAL: ArrowNaughtic

Ha! and like I said 2 months ago in your first thread........... right.......
Tommy, good catch on the servo motor thing! And good fix too. Thanks for the how to pics and the clarity to explain the issue along with a fix. So many of the guys are just posting horror storys with little to no explanation. As I have stated many times before a lot of the issues are nothinhg more than crash related or inexperience problems which easily get blamed on the manufacturor. Yours is a justified problem with a fix included. Very refreshing to see someone find fault and then offer a easy fix to solve the issue. My hat is off to you!


_____________________________________________________________________________________


Of all the things I ever lost....................................... I miss my mind the most!


Sooooo.......

Seriously now.
What would you suggest as an easy fix for a flaming ESC?

(in reply to ArrowNaughtic)
       Post #: 9

RE: ESKY digital servo WARNING!!!! - 9/3/2008 12:38:49 AM   
hamid_fireage


 

Posts: 104
Joined: 4/8/2008
From: Tehran, IRAN
Status: online 		Hey guys, I currently flying a hbk2. Last week I had a bad crash I broke some linkages and the starboard servo. So went to the LHS and bought the new servo(ek2-0500). After installing I found there is something wrong with it. Its speed is much lower than the old ones and its motor noise is much different with the others. so uninstalled it to find out what is the problem. The circuit board inside is far different with the old one. I just swaped the striped gear with the new one and still running the old servo.
does the e-sky have two version of it? Another difference is the part number is written on the new servo while the old ones have only the e-sky tag.

(in reply to Empty Wallet)
       Post #: 10

RE: ESKY digital servo WARNING!!!! - 9/3/2008 2:10:35 AM   
46u



Posts: 18269
Joined: 1/13/2005
From: Macon, GA, USA
Status: online 		E-Sky from what I know has to different servos. One is analog like what you bought and then they have the EK2-0508 which is digital and you cannot mix them. Other words you have to run either all analog or all digital.

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       Post #: 11

RE: ESKY digital servo WARNING!!!! - 9/3/2008 4:48:01 AM   
ArrowNaughtic



Posts: 1818
Joined: 11/20/2006
From: Kent, WA, USA
Status: offline
quote:

ORIGINAL: Empty Wallet


quote:

ORIGINAL: ArrowNaughtic

Ha! and like I said 2 months ago in your first thread........... right.......
Tommy, good catch on the servo motor thing! And good fix too. Thanks for the how to pics and the clarity to explain the issue along with a fix. So many of the guys are just posting horror storys with little to no explanation. As I have stated many times before a lot of the issues are nothinhg more than crash related or inexperience problems which easily get blamed on the manufacturor. Yours is a justified problem with a fix included. Very refreshing to see someone find fault and then offer a easy fix to solve the issue. My hat is off to you!


_____________________________________________________________________________________


Of all the things I ever lost....................................... I miss my mind the most!


Sooooo.......

Seriously now.
What would you suggest as an easy fix for a flaming ESC?

The only flaming thing I see in these forums is yourself. You are too poorly educated to see the truth........like I said before you are not worth the time. You have also made my blocked list. Goodbye and best of luck to you.......................NOT!!!!


_____________________________________________________________________________________


Of all the things I ever lost....................................... I miss my mind the most!

(in reply to Empty Wallet)
       Post #: 12

RE: ESKY digital servo WARNING!!!! - 9/3/2008 1:14:54 PM   
funflier


 

Posts: 832
Joined: 11/29/2004
From: South City, CA, USA
Status: offline 		They used to epoxy the motors in place at the factory against a little shim of plastic like material. I take it there not doing it anymore. Just another way of cutting costs on their end.
Like steel wire for motor and ESC wires so they cut through the insulation and short against each other .

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(in reply to Tommyjoking)
       Post #: 13

RE: ESKY digital servo WARNING!!!! - 9/3/2008 11:30:19 PM