Fiat CR.41.
http://www.warbirds.jp/data/ita/htm/cr41.htm
Partial translation.
"Fiat CR.40/41
CR.40 is one of the proposed design which offered in paralleled with CR.32..
CR.40’s base was CR.30 same as CR.32, and design concept were as follows to reduce weight and drag.,
(1) Install air cooler engine and had small fuselage.
(2) Connected biplane directly to the fuselage.
CR.40 prototype which had a Bristol Mercury IV engine (MM.202) was completed in 1934.
Nevertheless CR.40 had good climbing performance, total performance was inferior compared with CR.32, failed to adopt.
Although Italian air force decided to continue CR.40 research and ordered CR.40bis prototype(MM275) which had a domestically produced Fiat A59R engine in 1935. But CR.40bis,suffered unsolved engine trouble and maximum speed was only 350km/h, rejected again..
Also the study of performance improvement plan for the CR.32 was ordered to Fiat in 1935.
Fiat decided to develop following plan.
(1) Improved engine power CR.32 called CR.33.
(2) Light weight CR.32 called CR.32 quarter.
(3) Improved engine power CR.40 called CR.41.
CR.41 had a Gnome et Rhône 14Kfs 900hp engine and increased area vertical tail stabilizer/rudder.
CR.41 No.1 prototype (MM207) was quickly completed and rolled out in 1935. Also No.2 prototype(MM208) with trouble disappeared But Italian air force decided to develop mono plane, CR.41 inspection was stopped."
