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Biplanes with retractable undercarriage?

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Riggerrob

Well-Known Member
Joined
Sep 9, 2014
Messages
3,740
Location
Canada
How many biplanes were built with retractable undercarriage?

I can picture a couple of amphibians: Loening Air Yacht and Grumman Duck and Petrel ultra-light. Oh! That's 3!
The British Royal Navy flew lots of Walrus amphibious biplane flying boats and a few Sea Otters during World War 2.

Grumman built a few biplane fighters during the late 1930s ...
Also during the late 1930s, Beechcraft built Staggerwing executive aircraft.

But I have only heard of a single Pitts Special aero to with retractable wheels.

Can you think of any other biplanes with retractable wheels?
 
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