This is a .21 Turbo/Hyper with pull start Ofna engine.
This engine is used to power 1/8th scale R/C kits.
*NOTE* Some kits require extra items to install and operate
this engine. Check kit requirements for these parts.
Oversized flow-through Black anodized cylinder head
ABC construction (Aluminum piston with a chromed brass cylinder)
Ball Bearing-supported crankshaft
Slide Valve rotatable Carburetor
Needle valve adjusted by a screwdriver
One .21 Ofna Hyper engine w/Slide Valve Carburetor
One Brass collet (these hold flywheel in place)
One Header with seal, clamp and spring
One Running and parts information sheets
One Hyper .21 Decal sheet
Displacement: 3.49cc (.21 cubic inches) Bore: 16.26mm Stroke: 16.8mm Weight: 350g Length: 85mm (3.355") from front of front bearing to back of pull start. Width: 31mm ( 1.21") the width neglecting the mounting flanges
36mm (1.43") distance across crankcase measured between the centers Height: 113mm (4.428")
(contact Ofna for more technical information).
-Fuel with 5%-30% Nitromethane (20% is recommended) and a lubricant
content of 18% or more
-Glow plug (long plug without idle bar)
– If you need more information, use these Ofna resources –
Tower Hobbies Has Been Serving Hobbyists Since 1971 • Call 800-637-6050 or 217-398-3636
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