Spitfire IIa prop pitch

[VO101_Tom]

Originally Posted by Crumpp

Here is OUR VDM hydraulic electric propeller:

http://www.white1foundation.org/parts/prop_assemb2.jpg

It functions the same as all VDM hydraulic electric propellers. It functions the same in both the FW-190 and the Bf-109 series.

Negative Ghost rider.....

The propeller is a VDM hydraulic electric propeller. It functions as a CSP in hydraulic mode (don't get confused, hydraulic mode is when the hydraulic switch is turned on) and as a variable pitch propeller with the switch turned off.

Congratulations to the Foundation, will be a very nice aircraft. It will be good to see a bird fly again.

So you are saying that the base of the propeller feather is hydraulic mechanism? I'm sure, it does not have a separate hydraulic system (for example, is something that the landing gear, or (later) the oil/water radiator). The "hydraulic systems" is in a separate chapter of the manuals, and there is no VDM parts. But this means, that it get the pressure directly from the engine? The lubricating oil used as "hydraulic fluid"? It is also true that the air compressor is doing the same way... I did not know this.

[Crumpp]

So you are saying that the base of the propeller feather is hydraulic mechanism?

The propeller itself is electric but the system uses a hydraulic switch to read engine oil pressure and meter electric current to the propeller.

The lubricating oil used as "hydraulic fluid"?

No hydraulic propeller system AFAIK uses hydraulic fluid, they all use engine oil. That is also why you cycle a CSP several times during your ground run up, to ensure it is filled with engine oil.

[TomcatViP]

Really fascinating Crumpp.

Took me a lot of time to browse the website.

If I can be of any help

[Crumpp]

If I can be of any help

Thank you. Buy stuff from us in the gift shop, LOL...donate, it is tax deductible! Get a membership!

Come on down and start drilling rivets! We welcome any help in the project.

If you are interested in the FW-190 or WWII aircraft in general, there is some pretty good stuff in our members website. Lots of never before published pictures too.

[Crumpp]

Congratulations to the Foundation, will be a very nice aircraft. It will be good to see a bird fly again.

Yes it will and thank you. The confusion on VDM propellers is very understandable and is much clearer when you have one, LOL.

[TomcatViP]

Oh well... I am just en engineer with all the top end stuff that comes with. But as I never had to handle a riveting machine by myself It cld be interesting.

[Flanker35M]

S!

Tomcat..our engineers sit in the office for a reason Just kidding, I bet working on a real WW2 bird would be a real adventure Crumpp..Has the pilot of White 1 seen the plane lately? I think he would be very happy to see it fly again after so many years..