I just picked up a new old stock Sig 4 Star 60 ARF and would like to try a gas engine in it. I have zero expirence with gas model engines. Could some one point me in the right direction?
thanks,
Phil

The Evolution 15cc and the OS 15cc gas engines are a good choice for a 4 Star 60 or 64.
Pete

You should also look at the RCGF 15 beam mount, it's a more traditional design, it has a rear mount Walbro carb and is lighter and less expensive then the OS or Evo

Here is some information on the RCGF 15

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[TD="bgcolor: transparent"]Besides the parts listed in the picture, RCGF 15cc includes a gasket, bolts, throttle arm extension , in addition to a compact muffler, spark plug and manual.
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[TD="bgcolor: transparent"]RCGF new 8.4V electronic ignition means faster first-time starts, smooth idling ,higher performance and superb throttle transition.
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Manual

15CC BMGlow size;economy and powerful
Glow power isn't the only option anymore. The RCGF 15CC not only fills the displacement gap, but includes a beam mount to make the glow-to-gasoline
upgrade drop-in fast and easy. A rear pumper carb simplifies installation and adjustment.
RCGF 15cc is starting ease and with top performance ,it's attractive alternative to glow.and a solid buy for value and performance.

RCGF 15cc (Beam Mount)
Parameter:
Type : 2 cycle piston valve type gasoline engine for airplane
Displacement (cc) : 15cc (.91 cu in)
Bore x Stroke (mm): 1.3 in (32mm)*0.8 in (19.6mm)
Carburetor : RCGF
Ignition : DC-CDI (Computer Controlled auto advance, electronic ignition system)
Power supply: 4.8-8.4V
Maximum Output : 2.4 hp/1.76KW
Requires: Gasoline, 2-cycle oil, ignition battery & propeller
speed rang : 1500-15000rpm
Gasoline-Version : Pre-mixed Fuel, 25-40 (Gasoline):1 (recommended : 30:1)
(90% high otcane unleaded gasoline, Import gas into carbon fiber installations valves)
Lubrication Oil : 2 cycle engine oil
Propeller : 15*6 9000 rpm; 13*6 11000rpm (Standard Two leafs prop)
recommended props :13 x 6, 14 x6,13X8,15X8,15X6
recommended Airplane: 60 size plane,50 size plane,40 size plane
Cooling System : Air Cooled
RCGF engine package Includes: electronic CDI ignition, muffler, spark plug, gaskets, bolts, throttle arm extension & manual.

The RCGF 15 would be an excellent power choice for your model. My buddy has a Hangar 9 Ultra Stick 60 with an RCGF 15 that hauls it around in a most impressive fashion.

I was considering the RCGF 15 for my Hangar 9 Katana s 50

Thanks for the help. Now to choose.

Yes I agree the RCGF 15 is a great little engine.Handles very nice and good power.I am flying one in a 82 span Road Runner. Friend has one in a Easy Stick from value hobbies.
Valley View sells them now.The new Valley View 40 twin is built by RCGF now.I have two of the original VV 40s. Never had a problem with either of them. I build my own ignitions.
BCCHI Tired old CH guy.