After re-engining of the Type 123 with the 510hp Rolls-Royce F.XI 12-cylinder Vee-type water-cooled engine as the Type 141, this fighter became a contender in January 1928 in a competition held at Martlesham Heath to select for the RAF a single-seat fighter meeting the requirements of Specification F.9/26. The Type 141 carried single 7.7mm machine guns in bulged housings on each side of the fuselage beneath the cockpit, and, apart from its engine, it differed from the Type 123 in having a retractable radiator in the forward fuselage in place of the fixed radiator beneath the wing centre section. Although possessing light and responsive controls, and a good performance, the Type
141 was bested by the Bristol Type 105 Bulldog and the Hawker Hawfinch. After its return from Martlesham Heath, the Type 141 was fitted with a revised vertical tail, a chin radiator and shortened rear undercarriage legs (enabling them to be anchored to the front wing spar), and was submitted for deck trials as a shipboard fighter to Specification 21/26. Other modifications included provision of an arrester hook, wheel brakes, interconnected elevators, detachable wing spar joints and hoist attachments. After initial trials, the dihedral of the lower wings was increased from three to five deg in an attempt to improve lateral stability. Sea trials took place aboard HMS Furious in June 1929, but these were not entirely satisfactory, and, after its return to Vickers, the Type 141 was flown in the 1929 King's Cup Air Race (5-6 July), but was forced to retire, the aircraft subsequently being scrapped.
| Take-off weight||1678 kg||3699 lb|
| Empty weight||1202 kg||2650 lb|
| Wingspan||10.36 m||34 ft 0 in|
| Length||8.23 m||27 ft 0 in|
| Height||2.72 m||9 ft 11 in|
| Wing area||35.12 m2||378.03 sq ft|
| Max. speed||285 km/h||177 mph|
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