Throttle servo bandwith

Hi, there is some way to make work a 760us servo as throttle in a EVO? For a nitro heli, only had success with 1520us but modifying with a programming card to 760us doesn’t work on the gyro.
Is a KST servo that works on 1520/760


Regards

Hello,

as there is no benefit for 760us on a lazy nitro - it wasn't implemented yet. But i'll ask Ulrich here if we cna do this for a next update.

About your programming card - i have also KST and programmed the swash servos to 760us. Which exact servo type and programming card are you using and how is it set? - I have the one for the PC and works fine here, but older KST can't be programmed.

regards (EN) / Gruss (DE)

Rainer Vetter

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Posting and answering - please use a PC and a standard keyboard. Answer all questions fully, take the needed time, don't forget probably requested attachments.

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1 mal bearbeitet. Zuletzt am 14.06.2026 08:20 von RV.

Hi, so for now there is no possibility of using a 760us connected to Vbar ESC port? and using ch4 as throttle is possible?

I'm using KST programming tool #3, I tried with KST X755, BLS 805X too, this one also can work at 1520us so i'm using it there.

Regards

Nope - there is no way of using 760 us on any other function than swashplate and tail in its native sockets.

Unfortunately the 760us option for throttle isn't a easy thing - so implementing this takes time.

Please have a look at the data sheets of your servos. They are non-programmable in center as the sheet looks like:
https://www.kst-servo-shop.de/media/e5/09/0d/1750257031/KST_0302_X15_755X_Datenblatt_04_2025_de.pdf?ts=1751463858
https://www.kst-servo-shop.de/media/e1/f9/bc/1752049844/KST_0907_BLS805X_Datenblatt_04_2025_de.pdf?ts=1752049844

I'll ask KST for you ...

Mine here for my Huey is programmable:
https://www.kst-servo-shop.de/media/86/13/9a/1755513030/KST_2514_SV5006_12_Datenblatt_04_2025_de.pdf?ts=1755513030

I am using also the tool #2 with its PC software having more (but not needed here) options:
https://kstservos.com/products/servo-programming-tool-card-2-for-kst-servos-v6-0-v8-0?srsltid=AfmBOorMg2YWxeO8jJ6tWuRagQ7gjKVbpKRXeEhRMAJOxnDNViiENyAQ

regards (EN) / Gruss (DE)

Rainer Vetter

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Posting and answering - please use a PC and a standard keyboard. Answer all questions fully, take the needed time, don't forget probably requested attachments.

Für Posts und Antworten bitte einen PC und eine richtige Taststaur benutzen sowie alle Fragen vollständig abarbeiten. Nehmt Euch Zeit, beantwortet Rückfragen in Ruhe und vollständig.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Für Einzelkommunikation bitte ausschließlich Email verwenden! - PN, Messenger, Chat usw. werden nicht bearbeitet.
For single user communication please send a email only! PM, Messenger, Chat etc. won't be read.



2 mal bearbeitet. Zuletzt am 16.06.2026 06:39 von RV.

Hello,

so i got a word back from the German KST support. They took some servos out of their stock and tested them.

KST X15 X755 and BLS 805X can be programmed to 1520us center pulse with the Tool #3.

If this does not work on your side - maybe you need to contact KST how to fix it.

regards (EN) / Gruss (DE)

Rainer Vetter

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Posting and answering - please use a PC and a standard keyboard. Answer all questions fully, take the needed time, don't forget probably requested attachments.

Für Posts und Antworten bitte einen PC und eine richtige Taststaur benutzen sowie alle Fragen vollständig abarbeiten. Nehmt Euch Zeit, beantwortet Rückfragen in Ruhe und vollständig.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Für Einzelkommunikation bitte ausschließlich Email verwenden! - PN, Messenger, Chat usw. werden nicht bearbeitet.
For single user communication please send a email only! PM, Messenger, Chat etc. won't be read.



1 mal bearbeitet. Zuletzt am 24.06.2026 15:34 von RV.

Hi Rainer, Thank u for reaching out, i will test this weekend and let you know.

Regards