Esky servos again

[mnwizard]

So I'm out flying circuits in the garden with my stock Belt last night.

I'm learning to roll (bank) in the turns. Sometimes I get it right, sometimes I don't. :lol:

As I went to level out after a 90 degree turn, the Belt nosed up, stalled, and piled in tail first.

I replaced blades, tail feathers, feathering shaft (being off the throttle when it went in didn't save it) and straightened the boom. Didn't find anything else broken, and still had some daylight left so I wrote it off as pilot error and went out and tried again.

Hovered fine, but I noticed I had to hold in some forward collective. Still didn't dawn on me. Nosed down for FF and this time it tucked under and went in nose first. I knew it wasn't my error this time, and then it occurred to me. Sure enough, checked the front servo (stock Esky) and sure enough, it was stripped. DUH! :Slap

I've got some spare SGs but I figured why replace the stock ones if they're working right?
Double DUH! :arggg:

The fact that the servos on the Lamas are the same ones that they use on the much bigger Belt means that either they are over specs for the Lama, or under specs for the Belt. I'm thinking it's the latter.

So I figure that when I pulled nose up coming out of the turn, the servo stripped, the rotor disk pulled the front of the swash all the way up, and down she went.

The second time was my bad, I didn't check all the operation of all the servos after the crash. :o

One last thing, I've been flying with Idle up on, and I suspect the extra head speed contributes to overstressing the stock servos.

Learning something new everyday! :lol:

[another_finn]

I figured why replace the stock ones if they're working right?
You got some Esky servos that are working right? :shock:

Sorry, couldn't resist... and really sorry to hear of the double crash. I think those servos are fine for hovering practice, but you're right about idle up. The gears just can't handle the stress.

[mnwizard]

:lol: The one's in my Lamas work pretty good.

[DierWolf]

I've only recently switched to SG90's used esky servo's all the time withut issue... only thing thats a MUST with them is if you crash even a small crash check each one, 99.9% of the time at least one tooth breaks inside and its trash.

Which was fine for me as i was getting them dirt cheap and bought them by the 20's, still have them and still use them on my bro's heli, he's starting to do some hard maneuvers now as well with them and its not an issue.. i doubt that hard elevator up caused the strip, think you just didnt check the servo's right after the tail planting :)

Odly enough, i have never ever ever stripped an Esky servo that was working the tail... Strange'

[mnwizard]

I've only recently switched to SG90's used esky servo's all the time withut issue... only thing thats a MUST with them is if you crash even a small crash check each one, 99.9% of the time at least one tooth breaks inside and its trash.

Which was fine for me as i was getting them dirt cheap and bought them by the 20's, still have them and still use them on my bro's heli, he's starting to do some hard maneuvers now as well with them and its not an issue.. i doubt that hard elevator up caused the strip, think you just didnt check the servo's right after the tail planting :)

Odly enough, i have never ever ever stripped an Esky servo that was working the tail... Strange'

The servo stripping was what caused the first crash and it was the front servo. Hmmm.... I can't remember if I checked it over last weekend when I had a minor bump...

[Heli Yea!]

Chipped teeth?
watch this!:thumbup:
http://www.youtube.com/watch?v=fmrTPEfc-3M

[thunderhead]

I just can't believe any one uses these servo's in a heli. There are so many better choices.By not using them when you buy the kit,this will save you $$$$

[Heli Yea!]

This vid is for when your in a pinch, but your right better servos is the right fix. Im sure this technique would work on other servos too!:thumbup: