Default 172 - Parking Brake on, Full Brakes Applied, P-Factor moving airplane in run up

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1

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Are you using Developer Mode or made changes in it?

No

Have you disabled/removed all your mods and addons? If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the Community Support section.

Yes

Which aircraft are you reporting an issue about? (Please also add the proper tag for it)

Default Cessna 172-Skyhawk Steam Gauge

Which aircraft version are you experiencing this issue on? (You can find this listed in the Content Manager under the Aircraft Name)

See above

Brief description of the issue:

when performing a run up, airplane is drifting left in a parked/full brake configuration this should not occur. It feels almost as if the P-Factor is too strong.

Provide Screenshot(s)/video(s) of the issue encountered:

Detailed steps to reproduce the issue encountered:

load in the default steam gauge 172, apply brake and parking brake (Standard Run Up procedure) and engine throttle full.

PC specs and/or peripheral set up if relevant:

Build Version # when you first started experiencing this issue:

SU14

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Do you have the same issue if you follow the OP’s steps to reproduce it?

Provide extra information to complete the original description of the issue:

If relevant, provide additional screenshots/video:

2

Do you have the same issue if you follow the OP’s steps to reproduce it?

No. I’ve not been able to replicate the condition so far. Nothing in community folder, PC/store version.

Provide extra information to complete the original description of the issue:

I ran it at full throttle with parking brake on at KSAR, rwy 18, no wind, dry conditions, and it never showed any tendency to drift to either side.

If relevant, provide additional screenshots/video:

@SkyArmy2139631
Is this happening at all airports, and could you give me the ID some of the airports it’s happening at? Also, please let me know what the weather conditions were when it first happened, and I’ll try to duplicate your findings.
Regards

3

Just curious, but does the run up procedure really requests to increase full throttle ?. I would say that an engine run up consists in increasing RPMs but more likely around 1800 to test the magnetos.

2 Likes
4

Good point.
The 172S POH just shows running up to 1800 RPM for that check. But in any case, the plane shouldn’t slide around even at full throttle. And I couldn’t get it to move around at full throttle so really shouldn’t be a problem at 1800 RPM.
Regards

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5

Do you have the same issue if you follow the OP’s steps to reproduce it?

No. Tested using the C172 G1000 version, 1800 RPM and full throttle

Provide extra information to complete the original description of the issue:

I cannot test with the C172 steam gauge as reported by the OP since I don’t own the Deluxe version

If relevant, provide additional screenshots/video:

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6

it is 1800, most go around 19-20 for good measure however slip of the tongue in my original post on “full throttle” I did test it at full as well, max 2500 achieved and experienced the same.

7

Ok thanks for confirming. And do you experience the issue only with the C172 steam gauge or also with the C172 G1000 ?

8

Steam gauge, I have not tested on the G1000 version yet but will later today.

1 Like