OS 61 SF Engine Featured Engine: OS 61 SF

I have had people tell me that the future of power for RC airplanes lies with electric motors or gasoline engines. But I find that two stroke nitro engines are still a very effecient, reliable, and inexpensive way to fly medium sized planes. A sport flyer would be remiss not to consider two stroke nitro engines for power. Listed here are a number of preowned new and used options that might interest you.

BRAND SIZE RATING PRICE SKU DESCRIPTION
Enya 29 10 $50 8  
Evolution NT 61 10 $90 99  
Evolution NT 61 10 $90 90  
Evolution NT 61 10 $90 98  
Fox Eagle 60 7 $70 101 Power House!
HB 25 8 $40 1  
Magnum GP 65 9 $65 132  
Magnum XL 25 7 $40 49 One of a pair used on a P61. Carefully broken in and flown 8 times. Plane wrecked without effecting the engines.
Magnum XL 25 7 $40 48 One of a pair used on a P61. Carefully broken in and flown 8 times. Plane wrecked withuut effecting the engines.
MAGNUM XL 28 9 $45 41 Mounted but never run
Magnum XL 53 6 $45 47  
Magnum XL 61 10 $75 94  
OS Max FP 35 7 $40 89  
OS Max FP 60 7 $65 81 Small chip out of the top of carb throat
OS Max FP 60 7 $60 82 Has a Semico strap on muffler
OS Max FX 61 6 $70 66  
OS Max FX 61 7 $90 53 Runs like a fine machine.
OS Max FX 61 7 $95 58  
OS Max FX 61 7 $95 35  
OS Max FX 61 8 $105 38 Pitts Muffler
OS Max FX 61 10 $140 43  
OS Max FX 91 7 $125 63  
OS Max FX 91 7 $120 67  
OS Max LA 40 7 $45 55  
OS Max SF 46 7 $55 65  
OS Max SF 46 10 $95 59 Ringed
OS Max SF 61 7 $95 64 Ringed version
OS Max SF 61 8 $110 57 Ringed
OS Max SF 61 7 $95 39 ABC
OS Max SR 40 7 $50 61 New Ring
OS Max SR 60 7 $110 54 My best 60 engine new or used!
Skyward 60 1 $15 jp1 Crankcase is excellent. Some other parts included, but condition uncertain.
Super Tiger 45 10 $75 189 Missing box
Super Tiger 45 9 $65 191 New Bearings
Super Tiger 45 8 $60 185  
Super Tiger 61 7 $65 184 2 chipped fins on corner of head. Runs very well.
Super Tiger 61 7 $75 182  
Super Tiger 90 6+ $100 62 Runs impressively. Oldder round head style, made in Italy.
Thunder Tiger Pro 46 8 $70 74  
Thunder Tiger Pro 46 10 $80 73 Priced down to 9 because of light shelf patina
Thunder Tiger Pro 61 8 $85 140  
Thunder Tiger Pro 61 9 $90 72  
Thunder Tiger Pro 61 6 $70 71