Eeeek!

[Butuz]

Eeeeek. Had a fly after work and 3 mins into the flight this happened:




One Emax Digital Metal gear servo up in smoke. I noticed the heli pitch sideways suddenly and countered with full left cyclic and then dumped the pitch and managed to land very hard - I expected a blade strike because the rotor disk bounced massively but luckily the blades missed the flloor and the boom and it came to a halt fully intact.

Verrrrrry lucky!

SO GUYS WHAT IS THE REASON YOU SHOULD NOT BUY CHEAP SERVOS? ^^^^ THAT IS THE REASON - could have cost me my whole heli, or worse!!!!!!!!



Butuz

[Dan1982]

unlucky, hope the heli gets back in the air soon.

[Holst]

Did the servo break in flight or just bind up and get stuck?

[Butuz]

Break in flight when I got it on the ground the other two servos were moving ok bit this one was solid stuck - just took it apart and the gears and motor still moves freely but the entire servo stinks of melted PCB and smoke came out of it

Butuz

[swampy]

they're no good once you let the smoke out of 'em Butuz,,,it's the same with wires,,,,

[Mart61]

Bummer. Hope you get it sorted soon...

[andylinney]

You did well to get that down in one piece there mate! I've come to thinking that when it comes to heli gear, you've got to be willing to hang the whole model over the bin by each part as a heli is so parts critical that any part failing could make it a binbagger...

[Holst]

Im not sure the servo failed in flight.

It looks to me like you had too much movement and it went too low and bound up, then killed itself trying to point the correct way again.

Very carefully check that your swash cannot bind up when you repair the servos.

Some people use a cyclic ring on there transmitter to prevent this.

[Butuz]

Nope not true - I actually had the heli tamed down quite a bit, I only had 68% on ail and ele and 70% on pitch swash values - barely even enough to do a fast flip let alone the bonkers rates all you 3d guys run. The servo did that all on its own!

Butuz