Revmaster engines were originally converted from Volkswagen auto engines to aircraft engines by Revmaster Aviation of Hesperia, California (formerly of Riverside, California and Chino, California). Revmaster is one of the earliest VW converters that is still active and was founded by Joe Horvath in 1959 to serve auto and dune buggy owners. In 1968, they began building engines for the homebuilt light-aircraft market and have continued ever since. The firm also has developed and markets their own injector carburetor under the RevFlow brand name. These carburetors range in size from 28mm to 44mm by twos and provide altitude compensation features. They are presently extending their development of VW engines by work on their R-3000 model, which is based in principle, only, on existing VW auto engines (as all of their current production models are). All Revmaster engines are now assembled from new parts manufactured either by Revmaster or VW parts makers under contract to Revmaster. Another new development by Revmaster is the AD-200-C Light Sport Aircraft (LSA) canard. The information here has been obtained from the references below and the Revmaster Aviation Website. The only non-VW engine converted by Revmaster was the 602 cc Citroën into the Revmaster R-800 described next.
O-49 -- {N/A / N/A / 49} / {N/A / N/A / 800}
2cyl; Revmaster R-800; 27hp@N/A rpm; 1980-1986; Wt = N/A.
The largest of the Citroën 2CV engines to have been converted for aircraft had a 37 cu. in. / 602 cc displacement, 18 hp engine. The Moulton Taylor Micro-IMP was underpowered with the 602 cc engine, so Joe Horvath at Revmaster modified it to increase the displacement to 800cc, but could not increase performance beyond 20hp. Taylor selected other non-HOAE for his aircraft. Quickie Aircraft adapted this engine to the Quickie and achieved the 27 hp described here.
BGP; Dan Yager's QuickHeads Website; J81-82toJ85-86; SA9/80, 10/80.
Applications: (US) Quickie [N77T]; Moulton Taylor (Aerocar, Inc.) Micro-IMP [N9HT].
O-97 - - {3.366 / 2.717 / 96.7} / {85.5 / 69 / 1585}
Same stroke as O-112.
4cyl; Revmaster R-1600D; N/Ahp@N/A rpm; 1968-1980; Wt = N/A.
VW Type 1; carbureted engine with dual ignition.
AProgHBW71.
Applications: None found.
4cyl; Revmaster R-1600S; N/Ahp@N/A rpm; 1968-1980; Wt = N/A.
VW Type 1; carbureted engine with single ignition.
AProgHBW71.
Applications: None found.
O-112 - - {3.622 / 2.717 / 112.0} / {92 / 69 / 1835}
Same bore as O-127.
Same stroke as O-97.
4cyl; Revmaster R-1831D; N/Ahp@N/A rpm; 1968-1980; Wt = N/A.
VW Type 1; carbureted engine with dual ignition.
AProgHBW71.
Applications: None found.
4cyl; Revmaster R-1831S; 60hp@3000rpm; 1968-1980; Wt = N/A.
VW Type 1; carbureted engine with single ignition.
AProgHBW71.
Applications: (US) Rand Robinson KR-2.
O-127 - - {3.622 / 3.071 / 126.6} / {92 / 78 / 2074}
Same bore as O-112.
4cyl; Revmaster R-2100D; 65hp@3200rpm, 65hp@3200 (TO); 1968-present; Wt = 165#.
VW Type 1; Carbureted (RevFlow 34) engine with dual ignition.
KP4/00, 4/01, 4/02, 4/03, 4/05, 4/06; Revmaster Website.
Applications: (Australia) Corby Starlet. (Colombia) Agricopteros (built from Aerosport Scamp B light cropduster kit). (US) Aerosport Scamp B light cropduster; Evans Volksplane VP-1, VP-2; Mace M-102 Scorchy; Mini-Hawk I; Monnett Sonerai II L; Olson Nite Star; Quickie Q-2; Rand Robinson KR-2; Taylor (Molt) Bullet (two-seat Micro-IMP); Viking Dragonfly Mk. II, Mk. III. (Please note that some of these applications may be for the 75@3200 (TO) version.)
4cyl; Revmaster R-2100D; 65hp@3200rpm, 75@3200 (TO); 1968-present; Wt = 165#.
VW Type 1; Carbureted (RevFlow 34) engine with dual ignition and higher take-off output.
KP4/00, 4/01, 4/02, 4/03, 4/05, 4/06; Revmaster Website.
Applications: (Peru) INDAER Peru IDP-003 Urpi (modified US Kitfox). (US) Aero Composite Sea Hawker amphibian; Bond Sky Dancer; Frederick-Ames EOS/SFA; Jonas Hummingbird; Revmaster AD-200-C canard LSA; Taylor (Molt) Mini-IMP Model C; Van Dine Merganser canard flying boat. (Please note that some of these applications may be for the 65@3200 (TO) version.)
4cyl; Revmaster R-2100D Turbo; 70hp@3200rpm, 80@3200 (TO); 1968-present; Wt = 196#.
VW Type 1; Carbureted (RevFlow 34) engine with dual ignition, a lower compression ratio, and a turbocharger .
KP4/00, 4/01, 4/02, 4/03, 4/05, 4/06; Revmaster Website.
Applications: (Poland) SZD Ogar PZL-Bielsko powered sailplane. (US) Alvarez Polliwagen; Rand Robinson KR-2; Taylor (Molt) Mini-IMP Model C.
4cyl; Revmaster R-2100S; 65hp@3200rpm; 1968-1980; Wt = 165#.
VW Type 1; Carbureted engine with single ignition.
AProgHBW71.
Applications: (US) Rand Robinson KR-2.
O-181 - - {4.030 / 3.543 / 180.8} / {102.36 / 90 / 2962}
4cyl; Revmaster R-3000D; 110hp@3200rpm, 115@3400 (TO); 2004-present; Wt = 200#.
Carbureted (dual RevFlow 40) engine with dual CDI ignition. It is being developed with air cooling or, alternatively, as an OL-181 with liquid cooling (probably just the cylinder heads, like the Great Plains, Limbach, and Rotax engines). A turbocharged version is being considered. A detailed article about this engine has been published (KP8/06).
Contact Magazine #80 (June 2005); KP8/06; Revmaster Website.
Applications: None found.