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Ofna - OFNG5320 OFN53220 53220 023705532201 0023705532201
Manufacturer Stock#
53220
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Ofna .28 Hyper Mach w/Pull Start
 
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Ofna .28 Hyper Mach w/Pull Start
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Stock Number
LXMCA6
Retail Price
269.95
Tower's Low Price
$169.98
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Stock Status
In Stock
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Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is the Ofna Hyper Mach .28 Nitro Car Engine with Pull Start
and Rear Exhaust.

FEATURES

Six port ABC cylinder construction-"A"luminum piston,"B"rass cylinder
liner that is "C"hrome plated
Slide Valve Carburetor
SG (pilot) crankshaft
For increased torque and top-end power engine can be converted to
starter box operation by purchasing the Rear Back Plate Cover,
OFNG5089
Same mounting dimensions as a .21 cu in engine

INCLUDES

Ofna Hyper Mach .28 Nitro Car Engine with Pull Start,
exhaust gasket and instruction sheet

REQUIREMENTS

Fuel: 10-25% nitromethane content
Glow plug

SPECIFICATIONS

Claimed Horsepower: 2.8 HP
Displacement: .28 cu in (4.6cc)
RPM: 38,000
Crankshaft: 14mm SG
Carburetor: 8mm Slide Valve
Break-in Settings:
Needle Valve (High Speed mixture)- 6 turns counterclockwise
from closed
Midrange Needle- pre-set turn counterclockwise (do not adjust)
Throttle Stop Screw- About 1mm open from "just closed" position,
adjust opening so engine idles smoothly at low RPM without
engaging the clutch

Distance between mounting holes same side: .87" (22mm)
Distance between mounting holes opposite side: 1.4" (37mm)
Height from bottom of crankcase to top of cylinder head: 4.25"(108mm)
Length from pull starter to front bearing: 3.3" (85mm)
Length from pull starter to end of crankshaft: 4.6" (117mm)
Length from back of crankcase to front bearing: 2.5" (64mm)
Length from back of crankcase to end of crankshaft: 3.7" (93mm)
Length from center of crankcase to end of crankshaft: 2.9" (73mm)
Width of mounting tabs: 1.7" (44mm)

jxs 3/29/06
ir/jxs

– If you need more information, use these Ofna resources –
Email: 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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Accessories Needed
 
COMPLETION NOTES FROM THE TECH DEPARTMENT
THIS IS THE OFNA HYPER MACH .28 CU IN (4.6CC) PULL START ENGINE. FEATURES: ABC CONSTRUCTION, SLIDE VALVE CARB, CONVERTIBLE TO STARTER BOX OPERATION FOR MORE POWER, SG (PILOT) CRANKSHAFT, SAME MOUNTING DIMENSIONS AS .21 SIZE CAR ENGINE, RUBBER EXHAUST GASKET REQUIRES: CAR FUEL W/10-25% NITRO CONTENT, STARTING & TRACK EQUIPMENT

Accessories for the Ofna .28 Hyper Mach w/Pull Start

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  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
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Qty Discount Available
8.69   In Stock
 LXLN90 Tower Hobbies TOWER Power Glo-Starter Std w/o Meter
Qty Discount Available
10.99   In Stock
Subtotal for this Group of Accessories: 19.68  
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