German Prop Pitch Lever

[IvanK]

Again Kurfurst as in the other thread:

http://forum.1cpublishing.eu/showthread.php?t=22204

Do you have documentation that indicates Auto was in general operational use before late 1940 ? If you do it would be great to see it.

[JG53Frankyboy]

Originally Posted by xnomad

My thoughts exactly, I just use the throttle lever on my joystick as prop pitch and it's really easy as you just memorise the positions but if it isn't realistic then it's got to go.

i personaly hope if/when this will be changed, the 109's propeller pitch is still controlable with a radial axis (i have mapped the pitch on the thump wheel of my X52 Throttle) and we are not forced to map two new buttons , a "increase" and "decrease" propeller pitch button, espacially for the 109........

[TUCKIE_JG52]

I can't find the post where this video was requested. Well, here it is, it's self-explanatoy

http://www.youtube.com/watch?v=5kcCWt7rUNQ

[Strike]

I have a question for the veteran BF-109 technicians on this forum:

Does that actually work IRL? I mean, can you change the prop-pitch without a hydraulic pump running? Most prop pitch devices I know are operated by means of flyweights controlling valves that adjust pitch according to demanded pitch, and only works when the engine is running. Most modern planes, I believe, have a spring device set to push the prop to coarse (feather) pitch if the variable pitch unit or engine is lost.

[Siegfried]

In Bf109 pitch control is electric. A battery maybe control it while engine is not running...

[Strike]

The search is on...

[Blackdog_kt]

Yup, the flywheels and hydraulic assemblies are used in the governors of constant speed props. The 109 doesn't have a CSP, it uses an electric motor that directly commands changes to the pitch angle instead of commanding the desired RPM directly.

[Sternjaeger II]

yep, but it would need a battery and I suppose it would only be used for the startup, not for adjusting prop pitch before turning the engine on. Then again wasn't the 109 hand started normally?

[Strike]

Originally Posted by Blackdog_kt

Yup, the flywheels and hydraulic assemblies are used in the governors of constant speed props. The 109 doesn't have a CSP, it uses an electric motor that directly commands changes to the pitch angle instead of commanding the desired RPM directly.

Actually I seem to have found the answer, looking for a while now.

The 109 seems to have the system built like this, using VDM License-built Hamilton Standard propellers:


Pitch lever (electric) controls a motor (electric) which drives a pump (hydraulic) that changes propeller pitch.

So, while some planes have a hydraulic pump fitted on the engine gearbox with a mechanical link between the prop pitch lever and the command-link in the prop pitch governor, the 109 does not. It has a closed system which indeed is a lot less vulnerable in combat. Seeing that the possibility to lose your engine is always present in combat, it would be favourable to have prop pitch independent from the engine

I think this is the conclusion to my question at least

[jg27_mc]

Originally Posted by TUCKIE_JG52

I can't find the post where this video was requested. Well, here it is, it's self-explanatoy

TY.
Love the way you do the hand movements describing what is happening.