Hi,

Can someone tell me wich are the diferences between an O.S. .46 FX Non-Ringed w/Muffler and an Magnum XL-61A BB ABC FSR ?

The OS cost u$s109.99 and the Magnum u$s99.99, but the Magnum is .61

Is there really such diference in performance?


OS Specs:
http://www2.towerhobbies.com/cgi-bin...?&I=LXBY45&P=0

Magnum Specs:
http://www2.towerhobbies.com/cgi-bin...?&I=LXAP05&P=0

Thanks in advance.

I didn't follow your provided links, but I'd expect the Mag .61 to put out a lot more power than the OS .46, that's for sure. The Mag .61 is also going to be a lot heavier, it simply is a bigger engine.

The Magnum line, in general, is one of the less expensive lines of engines, and OS is, in general, one of the most expenseive for engines in the same size/power class. So comparing by price isn't really the way to go. Instead, you want to pick an engine based on what size/power/weight you want, and then look at the various options and the price compared to what you get for the money.

Obviously, OS isn't out of business, so a lot of folks think that an OS engine that is the same size and power output of a Magnum, but costs a lot more has something else to recommend it.

many people think OS is a higher quality product than Magnum (and some other brands). The quality control should be better, the engine should start better and last longer and be easier to run, and therefore worth the extra money, even if it puts out the same power.

Weither the engine actually is or isn't better, or actually worth the extra cash is a topic of debate . You'll find guys who will only buy OS engines, and guys who think OS engines are overpriced and that some other brand is just as good and less expenseive.

What do you intend to put it in?? wing span, type, expected weight etc, etc?

Thank you for the reply Montage! You made yourself perfectly clear!

Woodsy,
The engine is for a 58" trainner, BUT... I'm looking forward to use this engine in a future (bigger or low wind) airplane.

Regards.

a .61 might be to big for a 58" trianner Might be better off going to the .46 then selling it when you are ready to move up

Try a Thunder Tiger .46 Pro they are a kick ass engine and don't cost an arm and a leg. Everyone at my club uses them and loves them. They give you plenty of power and are reliable as the sun coming up in the morning.