GregL Posted July 9, 2003 Share Posted July 9, 2003 I noticed an Ad for SMA's Jet A fuel engine in one of the flying mags. Not having seen their ads before now I went to their website, www.smaengines.com. They had much more details about their engine. The SR305-230 is a heavy (423-lbs dry, 487-lbs full equipmt). They make the 230 hp claim because it produces 230 at 115% power at takeoff. At 100% power it's 200hp and down to 150hp at 75%. Speed is 160 kts at 6000ft (for a 230hp?). The engine has been certified since last summer, but now undergoing individual plane certification. They have it for a few. Their US office is in Daytona FL. Not that I'm an engine expert, I was surprised by their underwhelming performance numbers. The 160hp Deltahawke does as well if not better and is a 100 lbs lighter. I guess SMA's marketing dept is more efficient, bigger or at least exist. After all they're backed by Renault. Quote GregL Cozy IV Plans #1161 Link to comment Share on other sites More sharing options...
GregL Posted July 9, 2003 Author Share Posted July 9, 2003 Wups! About that airspeed of 160 knots. It converts to 184 mph. Not use to thinking in knots, but it still seems underwhelming for 200 hp at 100% power but I'll concede that. Its still heavy at 487-lbs. Quote GregL Cozy IV Plans #1161 Link to comment Share on other sites More sharing options...
mplafleur Posted July 9, 2003 Share Posted July 9, 2003 Looking at power to weight ratio, it's a dog. It needs to shed off about 100 lbs. It's all that valvetrain garbage. Quote Mike LaFLeur - Cozy MkIV #1155N68ML Link to comment Share on other sites More sharing options...
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