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Ofna - OFNG0152 OFN53218 53218 023705532188 0023705532188
Manufacturer Stock#
53218
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Ofna Hyper .21 8-Port Race Engine Rear Exhaust
 
Ofna Hyper .21 8-Port Race Engine Rear Exhaust
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Stock Number
LXFAC3
Stock Status
Discontinued
   
 

Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is a .21 Hyper 8-Port Racing Engine with Rear Exhaust from Ofna
This engine is used to power 1/8 scale R/C kits.
*NOTE* Some kits require extra items to install and operate
this engine. Check kit requirements for these parts.

FEATURES

Oversized flow-through Gray anodized cylinder head
ABC construction (Aluminum piston with a Chromed Brass cylinder)
Rear exhaust
Ball bearing-supported crankshaft
Slide Valve Carburetor for 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.
Needle valve adjusted by a screwdriver
SG (Pilot) shaft

INCLUDES

One .21 Ofna Hyper racing engine w/Slide Valve Carburetor and rear
exhaust
One brass collet (these hold flywheel in place)
One running and parts information sheets
One Hyper .21 decal sheet

SPECIFICATIONS

Displacement: 3.49cc (.21 cubic inches)
Bore: 16.26mm Stroke: 16.8mm
Horsepower: 2.7 @ 38000 RPM
Weight: 350g (12.3oz)
Carburetor opening: 15mm
Length: 85mm (3.355") front of front bearing to back of pull start
120mm (4.72") pull start to end of crankshaft
Width: 31mm (1.21") width neglecting the mounting flanges
21mm (.83") mounting holes same side
37mm (1.5") mounting holes opposite side
Height: 113mm (4.428") from bottom of crankcase to top of cylinder head
16mm (.63") distance from bottom of mounting flanges to
bottom of crankcase
(contact Ofna for more technical information)

REQUIREMENTS

Fuel with 5%-30% Nitromethane (20% is recommended) and a lubricant
content of 16% or more
Muffler or tuned pipe w/manifold
Glow plug: long without idle bar, can use O.S. Max #8 (OSMG2691)

JiM 7.31.03
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

Click here for Units of Measure Conversion Calculators

Accessories Needed
 
COMPLETION NOTES FROM THE TECH DEPARTMENT
THIS IS THE OFNA HYPER .21 REAR EXHAUST ENGINE FOR 1/8 SCALE ON-ROAD KITS. FEATURES: SLIDE VALVE CARBURETOR, REAR EXHAUST, SG (PILOT) CRANKSHAFT, BALL- BEARING SUPPORTED CRANKSHAFT, REQUIRES: GLOW PLUG, EXHAUST SYSTEM DEPENDING ON VEHICLE, FUEL W/5-30% NITRO & AT LEAST 16% OIL CONTENT

Accessories for the Ofna Hyper .21 8-Port Race Engine Rear Exhaust

Primary Accessories   Building & Field Equipment Optional Accessories
 
  Special Stock Number Product Description Parts Saver Eligible Tower's
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 LXJA89 Tower Hobbies TOWER Power Glow Plug
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4.79   In Stock
 LXRXC9 Tower Hobbies TOWER Power 20% Car Fuel Quart
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10.69   In Stock
Subtotal for this Group of Accessories: 15.48  
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Primary Accessories   Building & Field Equipment Optional Accessories

 
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