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O.S. - OSMG2080 OSM12520 12520 531028020351 4531028020351
Manufacturer Stock#
12520
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O.S. 25XZ (P) ABC w/21JN Slide Carb
 
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O.S. 25XZ (P) ABC w/21JN Slide Carb
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On-line Videos: Video 1 (95.8 MB) Video 2 (YOUTUBE)
Instruction Manuals: Manual 1 (2.4 MB)
Tower Catalog Page: 202

 
Stock Number
LXYNU2
Stock Status
Discontinued
Possible Substitutions
   
 

Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
        This is the 2-stroke O.S. Max 25XZ (P) 1/8 scale Truggy Engine.

****** Because of the expressed racing nature of this engine, ****** ****** it is NOT covered by the O.S. 2 Year Warranty ****** ****** per page 8 of manual. ******

FEATURES: Designed for 1/8 scale truggy racing competitions Meets ROAR regulations ABC piston and liner construction "A"luminum piston fitted to a "B"rass cylinder liner that is "C"hrome plated Three needle 21JN slide valve carburetor 8mm red carb insert for smaller tracks that restrict air intake Ten fin blue anodized cooling head with inner head button P3 ultra hot turbo glow plug

INCLUDES: O.S. Max 25XZ (P) Truggy Engine with instruction manual, 8mm carb reducer, exhaust gasket, dust cap set, instruction manual and P3 turbo glow plug

REQUIRES: Fuel: 10-30% nitro content (20% for break-in) Air Filter: MSFG1660 Exhaust system depending on vehicle, see COMMENTS Track equipment

SPECS: Displacement: 0.25 cu in (4.09cc) Output: 3.1 PS, 3.06 HP/33,000 RPM Bore: 0.689" (17.5mm) Stroke: 0.669 cu in (17mm) Practical RPM Range: 4,000-39,000 RPM Weight: 13.05oz (370g) Distance between Mounting Holes Same Side: 0.83" (21mm) Distance between Mounting Holes Opposite Side: 1.4" (37mm) Length from Backplate to Drive Washer: 2.6" (65.6mm) Width of Mounting Flanges: 1.8" (45mm) Width of Crankcase Below Mounting Flanges: 1.2" (31.6mm) Distance from Crankcase Center to Drive Washer: 1.7" (44mm) Height/bottom of Mounting Flanges/top of Cylinder Head: 3.7" (93.2mm) Height/bottom of Crankcase/top of Cylinder Head: 4.3" (109mm) Needle Settings: Preset at factory, start engine as is. If adjustments are ever required, make them in small increments. High Speed: 3.5 turns out from fully closed Metering Needle (low speed): Rotary: flush with carb body Slide: Flush then 1/2 turn in Throttle Stop Screw: .5mm out from fully closed

COMMENTS: The O.S. Max T-2060 WN Speed Tuned Pipe OSMG2939, OSMG2938 is an ideal exhaust system for the 25XZ. Flywheel sets are required (OSMG2648 for Mugen, OSMG2649 for Kyosho, both sold separately) for certain truggy models.

jxs 02/15/10 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. Max 25XZ (P) Competition 1/8 scale Truggy Engine. FEATURES: 10-fin cooling head, 21JN slide valve carburetor w/8mm reducer, P3 turbo glow plug REQUIRES: 10-30% nitro fuel, air filter, exhaust system, track equipment

Accessories for the O.S. 25XZ (P) ABC w/21JN Slide Carb

Primary Accessories   Building & Field Equipment Optional Accessories
 
  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
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Status
 LXUM80 Duratrax Glow Starter C Battery
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7.99   In Stock
 LXCMDL Fuji Batteries C Alkaline Battery (2)
Qty Discount Available
4.69   In Stock
 LXDNV1 Motor Saver 1/8 Off-Road Truck Filter
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13.99   Late Apr
 LXRXC9 Tower Hobbies TOWER Power 20% Car Fuel Quart
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7.69   In Stock
Subtotal for this Group of Accessories: 34.36  
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