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View Full Version : Double set with CH yokes&pedals causes yokes to spike



MortenHa
01-29-2010, 04:28 AM
Hi fellow simbuilders!

Our project (Artic Cockpit Project <ACP>, simulating the 737NG), has run into some curious trouble.
Curious because it shouldn't be a problem in our opinion.

Simply put:
We have Double set with CH USB yokes&pedals, they all show up inside FS91 correctly
and there's no problem calibrating them or fine tune them using FSUIPC.

But:

As soon as we start a simulator session we experience spikes in both ailerons and
elevator, these spikes makes it impossible to handle the aircraft.

In our opinion the driver that relay yoke movement shouldn't care if the movement came
from either yoke! As long as you just move one at a time.

Obviously there's gonna be erratic behavior if both were moving at one time. Sending
intermingled signals from both to FS91 will surely create spikes!

The one possible reason we can think of is that the pots are not precise enough. Making
them constantly send microchanges in movement to the driver, even though we are not touching them!

Are we way off in our assumption that it is possible to run two yokes on one input (I.e. have two pots control the ailerons at the same time)?

Or could it be microchanges in pots movement, due to the quality of the pots?

Any thoughts ?

Kind regards
Morten & Lasse

Peter Dowson
01-29-2010, 06:27 AM
We have Double set with CH USB yokes&pedals, they all show up inside FS91 correctly
and there's no problem calibrating them or fine tune them using FSUIPC.
Are they assigned in FS, or in FSUIPC?


Obviously there's gonna be erratic behavior if both were moving at one time. Sending
intermingled signals from both to FS91 will surely create spikes!
Not if you assign them in FSUIPC "direct to FSUIPC calibration", as FSUIPC will then arbitrate between them and only use the value showing the highest deflection from centre.

This is explained in the section "Multiple Joysticks for Multiple Pilots" in the Advanced Users guide for FSUIPC. Check "Method 2" in that section.

Regards
Pete

MortenHa
01-29-2010, 07:14 AM
Thanx Pete!!

I will tell my father as soon as i can get hold of him! It is his department :)

I knew there had to be an answer!

Will read the manual very closely!!

Excellent:)

Morten

Tomlin
01-29-2010, 12:44 PM
For a really good step by step guide look at http://forums.simflight.com/viewtopic.php?f=54&t=59729&sid=591f0ea822b3ec7ecaf18495c87f84ef