<p>I did increase tpa about 10%. This did fix my problem!</p>

<p>tpa will lower pid-values at higher throttle.</p>

CC BY-SA 4.0
2020-04-16T16:58:55.833Z
Excellent, glad you got it fixed!
Drones and Whatnot
CC BY-SA 4.0
2020-04-16T16:51:33.040Z
2020-04-16T16:51:33.040Z
heavykick
<p>Two things I can think of could be causing this.</p>

<p>The first is that, whilst your frame bolts are secure, your prop nuts could be loose, so the sudden acceleration of the motor causes slippage.</p>

<p>The second is that your props are flattening under the high RPM. I have only experienced this once but switching to a different set of props solved the issue.</p>

CC BY-SA 4.0
2020-04-15T20:07:45.480Z
Hi :) ... an no! Motor screws are tight and i am using the johnyFPV Props since 1/2 year on exact this motors.
heavykick
CC BY-SA 4.0
2020-04-15T20:09:55.237Z
@heavykick hi :) when you say motor screws, do you mean the screws holding your motors to your frame, or the nuts holding on your props? And sometimes, you just get slightly weaker props. When I experienced it, I was using some clear Avan props which had terrible oscillations. I switched to another set of Avans and it flies awesome! If you have a spare set, it might be worth putting them on just to see.
Drones and Whatnot
CC BY-SA 4.0
2020-04-15T20:11:18.127Z
fresh props. And I do mean all screws and nuts are tight...
heavykick
CC BY-SA 4.0
2020-04-16T15:46:39.703Z
@heavykick that’s odd - I’m interested to see the other answers to see what I’ve missed
Drones and Whatnot
CC BY-SA 4.0
2020-04-16T16:16:29.390Z
I will go on the field now with this drone and try to increase tpa ... we will see!
heavykick
CC BY-SA 4.0
2020-04-15T19:44:15.880Z
2020-04-15T19:44:15.880Z
Drones and Whatnot
<p>When I give full throttle with a full 4s battery I get vibrations.</p>

<p>After a while of flying the vibrations disappear.</p>

<p>Everything is fixed (no loose parts)
Filters are on 1x multipler.
RPM filters are enabled.</p>

<ul>
<li>2207 2750kv iFlight Xing motors</li>
<li>TBS Source One frame</li>
<li>JohnyFPV Props</li>
</ul>

<p>This is not a new build. I am flying this quad since 1/2 a year now. RPM filters were on 2x originally.</p>

CC BY-SA 4.0
2020-04-15T20:50:28.337Z
What Sensor & PID Loop Frequency do you use and on what Processor? Have you checked that the Processor can process the loops reliably? Because RPM-Filtering needs significantly more CPU Resources than standard filtering
Samuel Kälin
CC BY-SA 4.0
2020-04-15T20:55:07.657Z
It's a F7 and the PID-Loop is fine (checked in CLI)
heavykick
CC BY-SA 4.0
2020-04-16T03:08:35.223Z
I recommend trying a few different types of props as that will likely solve the issue.
Jacob B
<betaflight><multirotor>
Full throttle oscillations
heavykick
# Full throttle oscillations

(Asked by: username_0 on 2020-04-15)

When I give full throttle with a full 4s battery I get vibrations.

After a while of flying the vibrations disappear.

Everything is fixed (no loose parts)
Filters are on 1x multipler.
RPM filters are enabled.

* 2207 2750kv iFlight Xing motors
* TBS Source One frame
* JohnyFPV Props

This is not a new build. I am flying this quad since 1/2 a year now. RPM filters were on 2x originally.

**Tags:** betaflight, multirotor

> **Comments:**
> **username_1**: What Sensor & PID Loop Frequency do you use and on what Processor? Have you checked that the Processor can process the loops reliably? Because RPM-Filtering needs significantly more CPU Resources than standard filtering  
> **username_0**: It's a F7 and the PID-Loop is fine (checked in CLI)  
> **username_2**: I recommend trying a few different types of props as that will likely solve the issue.  

---

## 2 answers

### Answer by username_0 on 2020-04-16. Score: 3

I did increase tpa about 10%. This did fix my problem!

tpa will lower pid-values at higher throttle.

> **Comments:**
> **username_3**: Excellent, glad you got it fixed!  

---

### Answer by username_3 on 2020-04-15. Score: 0

Two things I can think of could be causing this.

The first is that, whilst your frame bolts are secure, your prop nuts could be loose, so the sudden acceleration of the motor causes slippage.

The second is that your props are flattening under the high RPM. I have only experienced this once but switching to a different set of props solved the issue.

> **Comments:**
> **username_0**: Hi :) ... an no! Motor screws are tight and i am using the johnyFPV Props since 1/2 year on exact this motors.  
> **username_3**: @username_0 hi :) when you say motor screws, do you mean the screws holding your motors to your frame, or the nuts holding on your props? And sometimes, you just get slightly weaker props. When I experienced it, I was using some clear Avan props which had terrible oscillations. I switched to another set of Avans and it flies awesome! If you have a spare set, it might be worth putting them on just to see.  
> **username_0**: fresh props. And I do mean all screws and nuts are tight...  
> **username_3**: @username_0 that’s odd - I’m interested to see the other answers to see what I’ve missed  
> **username_0**: I will go on the field now with this drone and try to increase tpa ... we will see!  

---

