BK 5005HV incompatible?

warhog · Mon 07. Aug 2017 21:50:58

Hi,
why is the BK 5005HV Servo marked as incompatible with the Spirit in the Servo compatiblity list?
I wanted to order one for my G380 and luckily checked back the list.

Regards

Mon 07. Aug 2017 22:40:28

Hi,

unfortunately from our experience these servos are not working well.
We have sent even our units to BK factory but from this point they do not respond for 2 years.

If I can recommend, go with MKS.

warhog · Mon 07. Aug 2017 22:54:20

ZeXx86 wrote:unfortunately from our experience these servos are not working well.
We have sent even our units to BK factory but from this point they do not respond for 2 years.

That's a shame

Is it any technical problem or the feeling that it is just not working well?

ZeXx86 wrote:If I can recommend, go with MKS.

That was my previous choice, the MKS HV9780. Seems like it is my choice now again

Thanks

Mon 07. Aug 2017 22:57:23

Technical issue. There are also other models that are not OK in our opinion, but normally they are working.

curmudgeon · Mon 07. Aug 2017 23:12:56

I am using the BK DS-5005HV mini tail servo on my Goblin 380 with the Spirit Pro. I have not noticed any issues yet. What negative behavior should I watch out for?

Tue 08. Aug 2017 9:29:17

Some pieces of 5005HV are working only with partial travel range.
Some other models are jittering (depending on used BEC voltage) and some are acting as an antenna. So in the flight unexpected oscillations of the servos and excess BEC draw could occur which can lead to any condition. Unfortunately pilot is usually trying to "fix" it by FBL settings, yet it can't be fully fixed.
But for sure they are working on improvements but these experiences are from the pilots from the past years.
If there is no issue, then the servos are working well.

curmudgeon · Tue 08. Aug 2017 15:43:13

Oh. I experienced a violent tail oscillation on Goblin 380 with the Spirit Pro and the BK DS-5005HV servo. I just assumed it was too high tail gain.