Jumper T-18 - strange flaps behavious

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mszulen
Posts: 4
Joined: Thu Sep 09, 2021 11:17 am
Country: Netherlands

Jumper T-18 - strange flaps behavious

Post by mszulen »

Hi

I've been trying to find some information, but did not succeed.
I'm also not sure, whether it's a radio or OpenTX thing:

I've been setting up a new glider (Multiplex Lentus) with full mechanics (flaps - etc).
All the mixes were setup and I've been testing the switches/functions.
The function in the issue is the crow (flaps down, ailerons up with 2s slow down)
When I flip the switch the left flap goes down slower than the rest (like there's additional slow down somewhere).
The thing is - it only happens ONE TIME, after I select the model (or switch on the transmitter).
After the first flip - it always works as it should.

I'm lost... mixers look ok. Swapping the flaps - the other one goes bad.

Any suggestions? The channel monitor on the radio also does show this initial delay, so definitelly, it's not on the model side.

Thanks in advance for help.

greetings from the Netherlands

Marek
Last edited by mszulen on Thu Sep 09, 2021 11:52 am, edited 1 time in total.

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Kilrah
Posts: 11108
Joined: Sat Feb 18, 2012 6:56 pm
Country: Switzerland

Re: Jumper T-18 - strange flaps behavious

Post by Kilrah »

Most likely improper use of the Slow function.
mszulen
Posts: 4
Joined: Thu Sep 09, 2021 11:17 am
Country: Netherlands

Re: Jumper T-18 - strange flaps behavious

Post by mszulen »

As mentioned - it happens only the first time I use the switch and also monitor shows that. The other flap works ok and the mixer was copied from the first one, which means, it should have that strange behaviour on both.
I did have similar setup on other glider (same radio) in the past and it did work correctly.
mszulen
Posts: 4
Joined: Thu Sep 09, 2021 11:17 am
Country: Netherlands

Re: Jumper T-18 - strange flaps behavious

Post by mszulen »

Here's the video. Look at channel 6
https://drive.google.com/file/d/1B6pkCG ... sp=sharing
mszulen
Posts: 4
Joined: Thu Sep 09, 2021 11:17 am
Country: Netherlands

Re: Jumper T-18 - strange flaps behavious

Post by mszulen »

Ok, as soon as I've posted my questions, I've figured out what was wrong.
Indeed, it was related to the messed up setup.
I haven't noticed, there was additional slow down in one of the mixers, that added on top of the flap.
Now - all is ok.
Still - can't understand, why it was happening only with the first use of switch.

Lesson has been learned :D

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