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O.S. - OSMG2052 OSM12175 12175 531028022669 4531028022669
Manufacturer Stock#
12175
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O.S. 21XZ-B ABC Speed Spec II
 
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O.S. 21XZ-B ABC Speed Spec II
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Tower Catalog Page: 202

Stock Number
LXDCUD
Retail Price
849.99
Tower's Low Price
$449.97
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Stock Status
In Stock
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859.44  Buy Now 40.50  

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4.  LXBHUA O.S. T-2090SC Silencer Set 21XZ-B 21VZ-B 25XZ 30VG 189.99  Buy Now
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Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is the Speed Tuned 21XZ-B Speed Spec II ABC 1/8 scale Buggy Engine
from O.S. Engines.
******Because of the expressed racing nature of this engine,******
******it is NOT covered by the O.S. 2 Year Warranty******
******per page 1 of manual.******

FEATURES

DLC coated crankshaft with silicone filled intake passage for
improved fuel flow
ABC piston and liner construction "A"luminum piston fitted to a
"B"rass cylinder liner that is "C"hrome plated
21J2(B) slide valve carburetor with three carb reducers that restrict
airflow helping to increase the amount of torque produced
Black anodized crankcase
Ceramic rear ball bearing

INCLUDES

21XZ-B ABC Buggy Engine with Slide Valve Carb, P3 Turbo Glow Plug,
Exhaust Seal Ring, two Dust Caps, Instruction Manual and 6mm, 6.5mm
and 7mm Carb Reducers

REQUIREMENTS

Fuel: 10-30% nitro content, 20% recommended for break-in
Exhaust System: Depending on vehicle
Glow starter, fuel tubing and track equipment

SPECIFICATIONS

Displacement: .213 cu in (3.49cc)
Output: 2.65 PS, 2.61 HP/34,000RPM
Practical RPM Range: 4,000 - 42,000
Bore: 0.641" (16.27mm)
Stroke: 0.661" (16.8mm)
Weight: 12.52oz (355g)
Crankshaft Size: UNF1/4-28
Distance Between Mounting Holes Same Side: 0.83" (21mm)
Distance Between Mounting Holes Opposite Side: 1.45" (37mm)
Height Bottom of Mounting Tabs/Top of Cylinder Head: 3.4" (86.5mm)
Width at Mounting Tabs: 1.8" (45mm)
Width of Crankcase below Mounting Tabs: 1.2" (31.6mm)
Distance from Backplate to Front Bearing: 2.5" (64.5mm)
Distance from Center of Crankshaft to Front Bearing: 1.7" (44mm)
Distance from Center of Crankshaft to Backplate: 0.81" (20.5mm)

Carburetor Settings, NOTE carburetor is preset at factory and
requires very small adjustments
Needle Valve: Approximately 3.5 turns open from fully closed
Throttle: Approximately 0.5mm open from factory setting with
reducer removed
Metering Needle: Rotate until slotted head is 1.5mm away from ball
link body
Mixture Control Valve: Rotate until slotted head is flush with
carb body

jxs 02/25/13
ir/jxs

– 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 the O.S. 21XZ-B ABC Off-Road Buggy Engine with 21J2(B) Carburetor. FEATURES: Tungsten weighted silicone filled crankshaft, slide valve carb w/6mm reducers, P3 turbo ultra hot glow plug and instruction manual, black anodized crankcase w/ceramic rear ball bearing REQUIRES: Fuel, air filter, exhaust system, track equipment

Accessories for the O.S. 21XZ-B ABC Speed Spec II

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  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
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Status
 LXRXC9 Tower Hobbies TOWER Power 20% Car Fuel Quart
Qty Discount Available
10.69   In Stock
Subtotal for this Group of Accessories: 10.69  

Primary Accessories   Building & Field Equipment Optional Accessories

 
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