firelite_marine

if this has the power & rpm it boasts, i'm afraid to see what it could do to a .21 scale nitro boat. has anyone here tried this thing or have any other info on it

http://www.osengines.com/engines/osmg1627.html

Jerry Dunlap

I've been running one in my Sport 20 for a year. It works well. I replaced the large bore carb with the smaller version from the OB.

JD

firelite_marine

20"? how fast does it run, can you break the sound barrier?

ryan_t888

Sport 20 is an engine class not a size dimension.

Ryan

gooycheese

If you want to go by the on papers #'s then there are a few engines that are atleast the equal if not the better than what is mentioned.

http://www.cmdracing.com/updated/mac21.htm

http://www.novarossi.it/products/eng...rx21mr2ns.html

http://www.seaducerboats.com/motor.htm

These are just what I would consider the top 3 engine besides what you mention, I am no expert but by the numbers they are atleast equals.

Paul

stempak

O.S has been around forever. And in my oppinion a top motor. And would expect those #'s to be right on or very close.

Ron Olson

My Feedback: (1)

Try to get a MAC .21 right now, lotza luck! Nova Rossi and CMB, both very pricy. OS is a decently priced engine with real-world HP and RPM numbers.
The others are very good engines but if you don't have deep pockets, the OS is one great way to go.

stempak

The mac is probably the best nitro motor. but your gonna pay for it.