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O.S. - OSMG0678 OSM19221 19221 531028002111 4531028002111
Manufacturer Stock#
19221
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O.S. 140RX Ringed w/Pump
 
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O.S. 140RX Ringed w/Pump
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Instruction Manuals: Manual 1 (1.6 MB)

 
Stock Number
LXBY54
Stock Status
Discontinued
 
 
 

Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is the 1.40RX engine from O.S. for F3A contest flying. It conforms to the
new rules for powerplants.

FEATURES

Rear-mounted needle valve (attached to a bracket on the backplate)
2-needle pump carb
Integrated fuel pump (for continuous fuel flow during aerobatics)
One-piece crankcase
Designed to get the max power at low RPM (makes the engine quieter)
Extra cooling fins (helps dissipate heat)
Ringed piston
Rear exhaust
Twin ball bearing-supported crankshaft

INCLUDES

One set of instructions, O.S. poster, and decal
One #A5 Glow Plug (OSMG2693) Heavy Duty Drive Washer
One prop nut w/locknut and spinner mount
One additional needle (with less taper)
One Heavy duty drive washer

REQUIREMENTS

Header (exhaust adapter) for a tuned pipe
Tuned pipe (tuned silencer - OSMG2945)
2-stroke fuel

SPECIFICATIONS

Displacement: 1.40 cu. in.
Bore: 1.26" (32mm)
Stroke: 1.13" (28.6mm)
Practical RPM Range: 1,800 - 10,000
Max Power: 3.5 PS, 3.45 HP at 9,000 RPM
Weight (WITHOUT ANY EXHAUST): 29.3oz (840g)
Suggested Prop Sizes: 15x14, 16x14
Overall height: 4.65" (118mm)
Overall length (backplate to front of drive washer): 4.6" (117mm)
Overall width: 2.76" (70mm)
Width of crankcase only (for engine mount): 1.91" (48.4")(this is the
same mounting dimensions as the 1.20 Surpass II with pump.)
Crankshaft thread size: 5/16-24

Needle Settings: High Speed: 2 turns out from fully closed
Low Speed: Indentation on screw head vertical
(straight up and down)
JBN 8.29.96
UP1-5-97/eke
ir/jl
updt lmm 3/31/09

– If you need more information, use these O.S. resources –
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

Click here for Units of Measure Conversion Calculators

Accessories Needed
 
COMPLETION NOTES FROM THE TECH DEPARTMENT
THIS IS A 2-CYCLE, REAR EXHAUST ENGINE. STARTING EQUIPMENT IS IN AIRPLANE ACG. COMES WITH A #A3 GLOW PLUG, FUEL PUMP, SPINNER LOCKNUT, AND EXTRA NEEDLE (HAS LESS TAPER THAN THE INSTALLED NEEDLE). REQUIRES FUEL, PROP, MOUNT, HEADER, AND TUNED PIPE.

Accessories for the O.S. 140RX Ringed w/Pump

Primary Accessories     Optional Accessories
 
  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
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Status
 LX1615 APC 16x14 Pattern Propeller
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11.99   In Stock
Limited Quantities
 LXD633 Dubro Vibration Reducing Motor Mount 1.20 2/4-Stroke
Qty Discount Available
42.99   In Stock
 LXCC51 O.S. Tuned Silencer 140RX
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264.99   In Stock
Limited Quantities
 LXRXC4 Tower Hobbies TOWER Power 10% Airplane Fuel Quart
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7.59   In Stock
Subtotal for this Group of Accessories: 327.56  
Click to Order all items listed in this Group of Accessories    Add this group of Accessories to Cart

Primary Accessories     Optional Accessories

 
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