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Magnum - MGMG2915 MGM210868 210868 032227029885 0032227029885
Manufacturer Stock#
210868
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Magnum XL91 RFS Blue 4-Stroke R/C Engine
 
Magnum XL91 RFS Blue 4-Stroke R/C Engine
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Stock Number
LXXRH4
Retail Price
285.00
Tower's Low Price
$189.99
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Stock Status
In Stock
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Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is the Magnum XL91 RFS Four-Stroke Aircraft Engine
with Blue Rocker Cover.

FEATURES

Aluminum piston, iron piston ring and steel cylinder sleeve for long
life and high power output
Dual ball bearing supported crankshaft and camshaft
Dual needle valve carburetor insures precise fuel/airflow metering
High-flow muffler
One year limited warranty through manufacturer

INCLUDES

Magnum XL91 RFS Four-Stroke Engine with Muffler, instruction manual
and parts list

REQUIREMENTS

Fuel: For break-in, 10% 2-stroke airplane blend
For normal use, 15% 4-stroke airplane blend
Glow Plug: 4-stroke "hot" type
Break-in Propeller: 14x6
Glow starter, fuel tubing and field equipment

SPECIFICATIONS

Displacement: 0.91 cu in (15cc)
Bore: 1.09" (27.7mm)
Stroke: 0.97" (24.8mm)
Crankshaft Diameter: 5/16"
Practical RPM: 2,000 - 12,000
Weight with Muffler: 22.4 oz (635g)
without Muffler: 20.7oz (587g)
Distance Between Mounting Holes Same Side: 1.02" (26mm)
Distance Between Mounting Holes Opposite Side: 2.04" (52mm)
Width at Mounting Tabs: 2.4" (60mm)
Height from Bottom of Mounting Tabs to Rocker Cover: 4" (101mm)
Height from Bottom of Crankcase to Rocker Cover: 4.7" (120mm)
Distance from Backplate to Front Bearing: 2.9" (74mm)
Distance from Backplate to end of Crankshaft: 4.9" (125mm)

High Speed Needle: Turn in completely then back out 2-1/2 turns
Low Speed Needle: Do NOT adjust until engine is broken in. Hold carb
barrel open, turn needle screw counter-clockwise until it stops
then turn in clockwise 4-1/4 turns-this is the factory setting

COMMENTS

Some Differences Between 4-Stroke and 2-Stroke Engines;
4-strokes are quieter.
4-strokes get better fuel economy.
2-strokes generate more RPM
4-strokes generate more torque and will swing a larger prop.
4-strokes have a realistic sound; like a real aircraft engine.

jxs 7/02/09
ir/jxs

– If you need more information, use these Magnum resources –
Email: service@globalhobby.net
Web Site: http://globalservices.globalhobby.com/
Phone: 714-964-0827
  Postal Address:
Magnum
GLOBAL HOBBY DISTRIBUTORS
18480 BANDILIER CIRCLE
FOUNTAIN VALLEY, CA 92708

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Accessories Needed
 
COMPLETION NOTES FROM THE TECH DEPARTMENT
This is the Magnum XL91 RFS Four-Stroke Aircraft Engine w/Blue Rocker Cover. FEATURES: Dual ball bearing supported crankshaft & camshaft, dual needle rear mount carb, dual bushing con rod, high-flow quiet muffler REQUIRES: 10% 2-stroke fuel for break-in, 15% 4-stroke fuel for normal running, glow plug, prop, glow starter & field equipment

Accessories for the Magnum XL91 RFS Blue 4-Stroke R/C Engine

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Subtotal for this Group of Accessories: 50.82  
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