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Old 09-14-2019, 06:30 AM   #11
NineLine
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The deflection to the left is meant to be there according to the team, I am seeing a difference when using the trim tabs.
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Old 09-18-2019, 07:17 AM   #12
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Quote:
Originally Posted by NineLine View Post
The deflection to the left is meant to be there according to the team, I am seeing a difference when using the trim tabs.
There must be a difference between ours and their build then because the trim tabs going end to end make no noticeable difference.

Furthermore every aircraft I've flown has been trimmed for the cruise speed. Neutral rudder required at cruise. In the yak a lot of right rudder must be applied which is not consistent with this. As you can imagine holding a lot of right rudder in is not particularly fun in the cruise, especially when going far.

The numbers I edit in the lua file make the trim correct with a trimmed aircraft around the cruise speed.
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Old 09-21-2019, 06:18 PM   #13
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Tried the trim tab setting to both extremes, and still same small right rudder required for ball center cruise. No change from centered slider.
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Old 03-21-2020, 10:22 PM   #14
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Any fix been found for this yet? Rudder trim in flight seems to make no differnce, and rudder trim in initial options/special make no difference.
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Old 04-04-2020, 12:24 PM   #15
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I agree, in special options fixed trim settings changes nothing.

I have had some luck modifying the FMOptions.LUA file though.
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Old 04-05-2020, 06:05 AM   #16
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My FMOptions.LUA settings

aileronTrimTab = 0.02
elevatorTrimTab = 0.0
rudderTrimTab = -0.25

I'm also going to play around the with the rolling resistance as the aircraft accelerates on tarmac with minimum throttle (setting around 35 manifold pressure gauge) with generator still working.

Maybe this is how the real Yak-52 works, but at this stage its more annoying than anything having to constantly ride the brakes.

Last edited by panzerd18; 04-05-2020 at 06:07 AM.
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Old 04-08-2020, 01:50 PM   #17
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thanks, works nicely, what would you tweak for the rolling resistance?

mainWheelRollFricK = 0.022
mainWheelGlideFricK = 0.69
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Old 04-09-2020, 03:27 AM   #18
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Quote:
Originally Posted by Sprool View Post
thanks, works nicely, what would you tweak for the rolling resistance?

mainWheelRollFricK = 0.022
mainWheelGlideFricK = 0.69
mainWheelRollFricK = 0.044

Much easier to taxi without overspeeding at minimum manifold pressure keeping the generator going.

Although ED might have modelled it correctly with 0.022 as another member of the forum with real Yak-52 experience said you had to get on the brakes.

Try 0.044 and see what you think.
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Old 04-09-2020, 05:23 PM   #19
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Thx - I read the thread from the real ex-yak guy, but I just like to tinker...
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