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O.S. - OSMG2055 OSM12200 12200 531028022461 4531028022461
Manufacturer Stock#
12200
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O.S. 21XR-B (P)
 
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O.S. 21XR-B (P)
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Instruction Manuals: Manual 1 (4.7 MB)

Stock Number
LXCWGL
Retail Price
399.99
Tower's Low Price
$229.99
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Stock Status
In Stock
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Quantity Discount
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Special Stock Number Units at this Price Tower's Low Price Click to Order Quantity Discount Savings
 L5CWGL02
O.S. 21XR-B (P) Add to Wish List
439.28  Buy Now 20.70  

Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is the 21XR-B (P) 1/8 scale Buggy Engine from O.S. Engines.

**Not covered by the O.S. Two Year Warranty.**

FEATURES

Shares the same basic layout as the O.S. 21XZ-B and can be upgraded
with 21XZ-B parts
Ideal for up and coming 1/8 scale buggy racers and backyard bashers
Blue anodized aluminum cylinder head
22(B) slide valve carburetor
Natural finish crankcase

INCLUDES

21XR-B ABC Buggy Engine with Slide Valve Carb, P3 Turbo Glow Plug,
Exhaust Seal Ring, two Dust Caps, Instruction Manual

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: 2.45 PS, 2.61 HP/33,000RPM
Practical RPM Range: 4,000 - 40,000
Bore: 0.641" (16.27mm)
Stroke: 0.661" (16.8mm)
Weight: 13.5oz (370g)
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 02/28/13
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

Click here for Units of Measure Conversion Calculators

Accessories Needed
 
COMPLETION NOTES FROM THE TECH DEPARTMENT
This is the O.S. 21XR-B ABC Off-Road Buggy Engine with 22B Carburetor. FEATURES: Easy to adjust 22B slide valve carb, upgradable with 21 XZ-B parts, turbo glow plug and instruction manual, blue anodized aluminum cylinder head REQUIRES: Fuel, air filter, exhaust system, track equipment

Accessories for the O.S. 21XR-B (P)

Primary Accessories   Building & Field Equipment Optional Accessories
 
  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
Click to Order Quantity Needed In Cart? Stock
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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