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O.S. - OSMG1250 OSM36210 36210 531028002388 4531028002388
Manufacturer Stock#
36210
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O.S. FT-300 Gemini Twin-Cylinder Ringed 4-Stroke Engine
 
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O.S. FT-300 Gemini Twin-Cylinder Ringed 4-Stroke Engine
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Instruction Manuals: Manual 1 (1.4 MB)

Stock Number
LXBY69
Retail Price
1999.99
Tower's Low Price
$1299.99
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Stock Status
In Stock
Limited Quantities

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Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is a FT-300 Twin-Cylinder 4-Stroke Engine from O.S. Max.
This Engine is a Flat (Opposed) Twin-Cylinder Engine, called the Gemini-300".
It is Scale-Like in Appearance when Installed in a Piper Cub or Citabria.

FEATURES

3-Crankshaft Ball Bearings
2-Camshaft Ball Bearings
Twin Opposed Cylinders
Ringed Piston
Geared Camshaft (geared timing)
Two-year warranty

INCLUDES

One Assembled FT-300 Twin 4-Stroke Engine
One Instruction Manual w/Decals, Poster
One Dual Glow Plug Extension Cable
One Locking Prop Nut Assembly (installed)
One Motor Mount (OSMG2808) (installed)
Two #F Glow Plugs (installed)
One Mounting Hardware Bag
One Valve Adjustment Tool Set (OSMG6334)
One Choke Valve Extension (Rod)

SPECIFICATIONS

Construction: Aluminum and Aluminum alloys
Displacement: 24.38cc (x2) or 1.49 cu in (x2)
Bore: 33.6mm (1.32")
Stroke: 27.5mm (1.08")
Power Output: 4.0 BHP at 7,000 RPM
Weight: 1828g (64.5oz)
Practical RPM Range: 1,800 - 9,000 RPM
Crankshaft Threading: 3/8-24
Length: 148mm (5.83") from firewall to front of drive washer
Width: 240mm (9.45")
Height: 90mm (3.54")
Suggested Props: 18x10,18x11,18x12,18x13,18x4,20x8,20x9,20x10,
20x11, 22x8
Needle Settings: High Speed: 1.5 turns out from fully closed
Mixture Control (low speed): 2 turns out from fully
closed

REQUIREMENTS

Fuel with 5%-15% Nitromethane and AT LEAST 16% lubricant content
(Use fuels blended for 4-stroke engines, most of the 5%-15% fuels
we carry meet these requirements)
Prop and Starting Equipment

COMMENTS

No longer includes needle valve extension, knob, and hook,
3x32mm propeller slippage screws, motor mount template, or spare
Woodruff key.

ir/jl
updt lmm 4/6/09

– If you need more information, use these O.S. resources –
Click Here: Manufacturer's Product Web Page
Email: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970
  Postal Address:
O.S.
3002 N. APOLLO DRIVE, SUITE #1
CHAMPAIGN, IL 61822

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Accessories Needed
 
COMPLETION NOTES FROM THE TECH DEPARTMENT
THIS IS AN R/C AIRPLANE ENGINE. STARTING EQUIPMENT IS IN AIRPLANE KIT ACG. COMES WITH ENGINE MOUNT AND GLOW PLUGS. MUST USE FUELS WITH 5%-15% NITROMETHANE AND 16% MINIMUM LUBRICANT CONTENT. USE LARGE FUEL TUBING (#AERQ2010).

Accessories for the O.S. FT-300 Gemini Twin-Cylinder Ringed 4-Stroke Engine

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Subtotal for this Group of Accessories: 114.47  
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Primary Accessories   Building & Field Equipment Optional Accessories

 
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