OS FS-120S-E A Quick Look

[@perkyplanesrc9363]

Looks good....still amazes me to see these things new in box. Hope somebody gives it a good home.

[@SomeGuyInSandy]

Mine was built in 2002, runs like a top. I am putting it on an old Funtana today in fact!

[@workonesabs]

Love four stroke engines, especially the 120's Have mostly the pumper versions and one pump mk1 is frpm the early 90s and the prop still goes supersonic on a 16x8 3 blader! Also have a bnb a supercharged version,

[@williamworkscamperdizforin2241]

Motor extremamente confiável.

[@mikeeiben3430]

I have a surpass III pumped. The nipples are broken off the pump and it is no longer available. Seems as if it would run fine on muffler pressure with the same carburetor.

[@dv650]

I am in the process of transforming the same engine into a regular carburetor engine, I purchased a new carb, back plate and intake from” RC JAPAN” and boy I will tell you including 3 days shipping via Fedex from Japan the final bill was $97.00 , a lot cheaper if compare buying parts from Tower, parts that usually they do not have, look for it”RC JAPAN”

[@dmrcflyr2]

Is the carb the same? If it is, then it sure operate with tank pressure. SOme pumped engines have carbs designed for the pump.

[@mikeeiben3430]

@dmrcflyr2 it has a regulator, but it runs fine.

[@dmrcflyr2]

@ That’s all that matters. As i said in the video, i avoid pumped engines, especially OS ones at all cost. No user serviceable parts and other issues. I’ll take a straight carbureted engine any day.

[@richardrottenberk7133]

Mine don't have a plate for choke

[@NathanWaldock]

Dripping here ,i have 40,s and 70,s and a saito 180 a and among other engines ,id love this ,but my wife would kill me