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        This is the Force 28 Truggy Engine with Pull Starter from Ofna.

FEATURES: ABC cylinder liner construction "A"luminum piston with a "B"rass
            cylinder liner that is "C"hrome plated
          Slide valve carburetor
          SG "pilot" type crankshaft
          Rear exhaust

INCLUDES: Force 28 Truggy Engine with Pull Starter, tapered drive washer,
            silicone exhaust basket, instructions and parts list

REQUIRES: Fuel: Car blend with 20% nitro
          Glow Plug: Medium heat range without idle bar
          Misc. field equipment, air filter, plug wrench and more

SPECS:    Displacement: .28 cu in (4.58 cc)
          Bore: 18.68mm
          Stroke: 16mm
          Output: 2.9 PS @ 32,000RPM
          Practical RPM Range: 2,500 - 32,000
          Weight: 16.7oz (475g)
          Distance between mounting hole centers/same side: 0.83" (21mm)
          Distance between mounting hole centers/opposite side: 1.4" (37mm)
          Height/bottom of mounting tab to top of cylinder head: 4" (102mm)
          Height/bottom of crankcase to top of cylinder head: 4.5" (115mm)
          Width at mounting tabs: 1.8" (45.8mm)
          Length from pull starter to front bearing: 3.3" (84.2mm)
          Length from pull starter to end of crankshaft: 4.5" (114mm)

          Carb needle settings;
            Main Needle Valve: 3-3-1/2 turns form closed
            Low Speed Needle: Located in the center side of carb, set flush
              with ball end
            Barrel Stop Screw: Set for 1/16" inch gap

COMMENTS: Some notes on rotary and slide valve carburetors;
          Rotary carbs offer a larger response in the middle of the power
          band. This works well for off-road applications when throttle
            response must be varied.
          Slide Valve carbs provide greater response at the beginning and end
            of the power band. This works well for on-road and racing
            applications for fast take-offs and high speed.

                                                                    jxs 3/13/08
                                                                         ir/jxs



– If you need more information, use these Ofna resources –

E-mail: help@ofna.com
Web Site: http://www.ofna.com/
Phone: 949-586-2910


 
Postal Address:
Ofna
7 VANDERBILT
IRVINE, CA 92618  








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