Revmaster Aviation has finished development of its latest upgraded engine, the new Revmaster R-2300, which maintains Revmaster’s proprietary systems and parts, including its RM-049 heads that feature large fins and a hemispherical combustion chamber. It also maintains the earlier R-2200’s engine’s top horsepower (82) at 2950 rpm continuous. (Takeoff power is rated at 85, at 3350 rpm.)
The additional power comes from a bore of 94mm plus lengthening of the R-2200’s connecting rods, plus increasing the stroke from 78 to 84mm, according to company officials. “We have put a lot of energy into this redesign,” says Joe Horvath, president and founder of Revmaster. “On paper it looks like just a few minor modifications, but we’re really closer to a complete rework of the internals: crank specification, rods, pistons, and cylinders are all new.” The longer stroke results in more displacement and longer connecting rods yield better vibration and power characteristics, he said, noting the lower cruise rpm allows the use of longer propellers – and the higher peak horsepower can be felt in shorter takeoffs and steeper climbs.
The direct-drive R-2300 retains Revmaster’s dual CDI ignition with 8-coil spark to 8 spark plugs, dual 20-amp alternators, oil cooler, and its proprietary Rev-Flo carburetor, while introducing the longer cylinders that do not require spacers.
The automotive-based bearings, valves, valve springs, and piston rings (among others) make rebuilds easy and inexpensive, even as the Revmaster-engineered components have heavy-duty longevity built in, company officials said.
First deliveries have already begun; full production is underway. Pricing for a complete, test-run Revmaster R-2300, complete with geared starter, dual ignition and twin alternators is $7,200.
For more information: RevmasterAviation.com