RON SMITH COLLECTION
No. 12225. K & S SA102.5 Cavalier (G-BDKJ c/n PFA 1589)
Photographed at Henstridge, UK, by Ron Smith

K & S SA102.5 Cavalier

12/31/2013. Remarks by Walter van Tilborg and Johan Visschedijk: "The SA102 Cavalier, developed by Stan McLeod of Squaircraft, Calgary, Alberta, Canada, was a much refined development of the French GY-20 Minicab. Intended for the North American amateur constructors market it differed in many aspects. It had a stronger overall construction for heavier engines up to 135 hp, a new spring steel landing gear, modified wings and spar, increased cabin glass area, forward hinging doors and a swept vertical tail.

The prototype was modified by Forest Fenton from a GY-20 Minicab (CF-RLO) fitted with a tricycle type landing gear, but it retained the GY-20 style vertical tail; later copies had a swept vertical tail. Powered by an 125hp Lycoming O-290 engine it was flown in 1963. The SA102 was initially marketed via Squaircraft and from 1966 by K & S Aircraft Supply (Kay & Stan McLeod), but only few were completed; it was replaced by the SA102.5.

The SA102.5 Cavalier was a much developed model incorporating several features of the SA105 Super Cavalier, hence the new designation, initially noted as SA102 Point 5. This improved version had upwards canted wingtip tanks as standard, featured a new design upward hinging canopy, additional rear cabin windows and it was built with a tricycle or atail wheel landing gear. It could be fitted with engines in the 85-135 hp range such as Continental C85, C90, O-200-A, Lycoming O-235 and O-290, Franklin Sport 4 or similar.

The prototype SA102.5 made the first flight in February 1971. One SA102.5 in the USA was completed with a retractable tail wheel landing gear and it had an 125hp Lycoming O-290-D; it first flew in September 1973. The SA102.5 was marketed via K & S and by 1976 more than 1,200 sets of plans had been sold. The company was renamed Macfam in 1979 and McAsco in 1984, subsequently the business was transferred to the USA under the name MacFam (with a capital F). Plans are no longer available.

The pictured aircraft was built by Harry Yardley of Gloucester, UK, in 1977."

Created December 31, 2013