FS56-a 4-Stroke Engine

A big performance boost for 40-size planes!

Ushering in a new era in O.S. 4-stroke technology: the FS56-a. It's the first in the alpha series, with the latest advancements for boosting your plane's performance.

It's like giving your 40-size plane a new lease on life!

[ Click here for a review by RC Power ]

  • Specifications
  • Exploded Views
  • Parts Listing
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Stock Number: OSMG0956
Displacement: 0.569 cu in (9.32 cc)
Bore: 0.945 in (24.0 mm)
Stroke: 0.811 in (20.6 mm)
Practical rpm range: 2,400-13,000
Output: 0.99 hp @ 10,000 rpm
Weight w/muffler: 16.26 oz (461 g)
Includes: 40NA carburetor, muffler
Recommended props: Sport & aerobatic; 13x6, 12x6-8; Scale: 13x6-7, 12x6-8

Primary Accessories

Stock Number Mfr Number Product Description Quantity Needed
 GPMP2012   GPMP2012  Great Planes Standard ProGlo Starter w/Charger 1

Field Equipment

Stock Number Mfr Number Product Description Quantity Needed
        

Optional Accessories

Stock Number Mfr Number Product Description Quantity Needed
 APCQ1207   LP12070  APC 12x7 Sport Propeller 1
 APCQ1307   LP13070  APC 13x7 Sport Propeller 1
 GPMG1061   GPMG1061  Great Planes Adjustable Engine Mount .40-.70 1
 GPMP2022   GPMP2022  Great Planes Standard ProGlo Starter w/Meter & Charger 1
 HCAP3205   HCAP3205  Hobbico Panel Ready TorqMaster 90 1
 HCAP3335   HCAP3335  Hobbico Safety Stick Engine Starter 1
 PAAP1453   PT31  Pacer Zap After-Run Engine Oil 1 oz 1
 TOPQ5140   TOPQ5140  Top Flite 12x6 Power Point Propeller 1
 TOPQ5145   TOPQ5145  Top Flite 12x8 Power Point Propeller 1
 TOPQ5155   TOPQ5155  Top Flite 13x6 Power Point Propeller 1
 TOPQ5235   TOPQ5235  Top Flite 20x8 Power Point Propeller 1