Koby will not stay spooled up

[vertico]

My Koby 40LV is not cooperating at all with a Scorpion 2221-6

Does the Koby have KSA mode? I don't see it listed in the manual

[Wh1teAfr1can]

It does not. It has similar architecture to the kosmik which does not have it either. What is happening and what version is your Koby firmware?

[Roger_Salmon]

Originally Posted by vertico

My Koby 40LV is not cooperating at all with a Scorpion 2221-6

Does the Koby have KSA mode? I don't see it listed in the manual

Make sure you have the latest firmware in the Koby first. You'll need the Progdisk for this unfortunately. If it's a timing issue then you can adjust this with the Progdisk.

[vertico]

I Purchased mine from helidirect about 3 months ago. I'm not positive which version of the software it has but I am under the impression it is the most recent (but not positive)

I posted about this a while back and got nowhere with it so I gave up on the ESC but now i am back to wanting it to work.

When it spools up it is fine, when I switch to IU it is fine.

but when I start to 3D (and after) it does this:

3 seconds 4000RPM
drops hard to 2500RPM
3seconds 4000RPM
drops hard to 2500

It does this over and over until I land, reduce throttle to zero and spool up again. I can hover gently no problem, hard input and it starts doing it again. I can reproduce this every flight and has led to 2 crashes in my trouble shooting. I am setup for mode 4 + lipo.

This is the Koby40 on a Blade 450x with Scorpion 2221-6, Align 415m's cyclic Align 420m rudder, iKon FBL. Motor is on 12T pinion (I think, can't remember)

Let me know what you think. I really appreciate it, I'm considering switching all my helis to Kontronik but this one has left a sour taste in my mouth. I have a Jive on my Gobby630 with no issues

Maybe I need to get myself a progdisc

[vertico]

Any ideas? My next step is to contact Kontronik. I'm afraid to put this back on my heli as it has already caused two crashes

[Wh1teAfr1can]

are you sure you dont have the Ikon gov enabled? or did you adjust the end points in the ikon at all?

[gouki74]

is it possible the kontronik 40LV cannot handle the -6 motor? i have a -8 and it says on the box max 45amps. the -6 would probably have a higher amp rating than the -8. have you tried a motor that has a lower kv rating than the -6 motor?

[Wh1teAfr1can]

Yeah that was going to be my next question too is it may be that the controller is too small for the motor.

[vertico]

I see people that are running -6 on the stock 35amp esc. Another user posted that their logs showed a peak of 65amps.

I would think the Koby 40 could handle it.

Is it possible to disable over current protection?

[Wh1teAfr1can]

Originally Posted by vertico

I see people that are running -6 on the stock 35amp esc. Another user posted that their logs showed a peak of 65amps.

I would think the Koby 40 could handle it.

Is it possible to disable over current protection?

No you cannot disable it as it would lead to FET failure and or a fire. Check your gear lash as well as a tight gear lash can cause excessive amp draw. What throttle percentage in your radio are you using for 3D?