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pmdec
02-28-2018, 06:29 AM
Hi,

I received pictures of an automatic variable pitch propeller with apparently wooden shielded blades. Any info welcome ! Diameter about 2.24 meters (~88").

Best regards,
Pierre-Michel

EDIT: The pictures are so good I forgot to copy what the owner wrote about the markings:
Voici les inscriptions de sa plaque signalétique :
HUB ASSEM B200 -100 (354)
SERIAL 4-108 T.C 067 P.C 5O ou 5C
BEECH AIRCRAFT CORP WICHITA KANSAS

Dbahnson
02-28-2018, 07:55 AM
I think the expert on these newer variable pitch props is Monte Chase. I think he can be contacted via his web site, www.notplanejane.com.

He has a huge collection of them and knows a lot about the topic.

pmdec
03-02-2018, 02:43 PM
I think the expert on these newer variable pitch props is Monte Chase. I think he can be contacted via his web site, www.notplanejane.com.

He has a huge collection of them and knows a lot about the topic.
Yes! Fine idea! Monte Chase told me the prop has been used on B-35 Bonanza and some others Beech types: B35A, C35, D35, E35, 35R, 45 (= military YT-34), et 50 (military L-23A) with engine up to 250 HP.

I was wrong to write about an automatic variable pitch propeller in my post: it was electrically manually controllable from the cockpit.

More recent type of "Bonanza" (B-36) uses a three baded prop.

A 1947 advertisement for the first Model 35 Bonanza in 1947 shows a variable pitch propeller with same shielded blades:https://en.wikipedia.org/wiki/File:Advertisement_for_Beechcraft_Model_35_Bonanza ,_May,_1947.jpg

Best regards, and thanks again for the guidance!
Pierre-Michel