Ofna .28 Off-Road Truggy PS Force Engine OFN52217
OFN52217 Ofna E2801 Force 28 SG w/Pull Start (4)

Ofna .28 Off-Road Truggy PS Force Engine OFN52217

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Ofna engine is 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.


Requires:

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

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
  • Ofna 8 Nitro Buggy

Review Summary