Stripped Metal Gears?

[serpent887]

I bought metal gear servos hoping that this would be a thing of the past.

Following a very light crunch the metal gears have stripped in the (rear) DS610 cyclic servo, I was hoping that an upgrade to metal gears would eliminate this problem, are these servos known to be weak in this area ?

Thanks for your help

[sacko]

If only.

Lost count of how many HS65 MGs i have stripped.

[Sieze2]

I have never broken metal gears. The case usually cracks first.

[Dedcalm]

I thought there was a sacrificial plastic gear in the gearing that would have the give so as not to damage the others, motor, casing etc.

[serpent887]

I thought there was a sacrificial plastic gear in the gearing that would have the give so as not to damage the others, motor, casing etc.

Mmmm, I wish! They are all metal and the main (chunky) gear has 4 teeth missing! it was only a minor spill too. I could understand if it was a mega smash but this was just a simple blade strike on the ground during spoolup.

[jwatts007]

As you know Paul, crashed the 600 a few times, never done a servo, but did strip a servo horn, I think they are the sacrificial part of this servo, too bad I have now got metal horns fitted.

[serpent887]

It's weird as the heli lurched during the first spoolup following installation of these servos right out of the box (supposedly brand new) - it was a real WTF moment.

So now I am wondering if the crash caused the servo failure or if the servo was already damaged and actually caused the crash .

[jwatts007]

I have a 610 here that is cream crackered, the gears are ok, do you want it, for the gears.

[millerman]

i just get the std gear parts after stripping metal gear servos at least its only a couple of quid that way

[acwman]

If only.

Lost count of how many HS65 MGs i have stripped.

+1 for me aswell... I've got a whole tin of hs65 gears and broken cases.

I just been buying the carbonite gears to replace the broken ones now.

[pgkevet]

I'm sure there's the odd dodgy 610/620 around. I had a 620 throttle servo jam up on me..and that wasn't the gears..but with their power any motor problem coudl tear teeth.
I also just had my current throttle 610 servo apart because it was stiffer than the cyclics.. liberal rinsing, relubing with servo grease and cycling it manually and it's turned smooth

[chris jones2.4]

you managed to break them with a light crunch, i know someone who smashed there 700 into the ground from 50 feet with 610's and the servos where as sweet as a nut

[Radbourne78]

i've put my 400 + 450 in more times than i care to remember and have never broke a 65MG

[pgkevet]

i've put my 400 + 450 in more times than i care to remember and have never broke a 65MG

I have. You just need to crash with more vigour and panache

[serpent887]

The 65MG is understandably weaker but the 620 gears are substantial chunks of metal.

The thing is, this was such a minor event I don't believe it could possibly have done this damage. Following the thoughts offered in this thread I am led to think the servos were actually faulty from the start and the missing teeth are the cause and not the effect .
It's a double pity as it cost me a set of beautiful Radix blades too

Thanks for your help and advice.