Electric Motors, Engines & Accessories > Engines Glow Fuel > Engines R/C Glow Fuel Aircraft 2-Stroke - .76-1.2 Bookmark this Page

O.S. - OSMG0652 OSM19215 19215 531028022041 4531028022041
Manufacturer Stock#
19215
A Closer Look at This Product
  Tech Notes

Accessories Needed

Possible Substitutions

Replacement & Optional Parts

Easy RC: Engines

Browse O.S.

Product Feature Page

Manufacturer's Product Web Page


O.S. 120AX Special Engine
 
Click for parts for this item
Easy Pay Eligible: Yours for 3 Easy Pay payments of $109.99
Select Easy Pay Plan during checkout.

O.S. 120AX Special Engine
View Larger Picture

Tower Catalog Page: 199

Stock Number
LXCFCA
Retail Price
499.99
Tower's Low Price
$329.97
Stock Status
In Stock
Limited Quantities

Buy Now
Add to wish list
—— Share ——
Share on Twitter
Share on Pinterest Email This Page To A Friend
 

Quantity Discount
  Special Savings When Buying in Quantities
 
Special Stock Number Units at this Price Tower's Low Price Click to Order Quantity Discount Savings
 L5CFCA02
O.S. 120AX Special Engine Add to Wish List
630.24  Buy Now 29.70  

Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is the 120AX Special Ringed Aircraft Engine from O.S. Engines.

FEATURES

High performance two stroke engine designed for sport and scale
models
Compact size enables it to fit into most cowls
Crankshaft port timing was modified to increase power at high RPM
Velocity stack on carburetor adds acceleration at high RPM
0.1mm head gasket increases compression ratio for more power
1mm deeper machining to enlarge intake port for greater RPM
Two year limited warranty through Hobby Services beginning at date of
purchase

INCLUDES

120AX Special Ringed Aircraft Engine, #8 Glow Plug, 70D Carburetor
with Velocity Stack, Instruction Manual, Prop Washer & Nut and
Needle Valve Extension Set

REQUIREMENTS

Fuel: Two-Stroke with 18% lubricant and 5-20% nitromethane
Muffler: E-5020 "Power Box"
Propeller: 15x10-12 or 16x8-10

SPECIFICATIONS

Displacement: 1.218 cu in (19.96 cc)
Bore: 1.197" (30.4mm)
Stroke: 1.083" (27.5mm)
Practical RPM Range: 1,800 - 9,500
Output: 3.35 PS (3.155 HP) @ 9,500 RPM
Crankshaft Size: UNF5/16-24
Distance between Mounting Hole Center Same Side: 0.98" (25mm)
Distance between Mounting Hole Center Opposite Side: 2.3" (58mm)
Height/bottom of Mounting Tab/top of Cylinder Head: 3.4" (85.7mm)
Height/bottom of Crankcase/top of Cylinder Head: 4.3" (109.2mm)
Length from Backplate to front of Drive Hub: 3.9" (100.2mm)
Length from Backplate to end of Crankshaft: 5.5" (139.9mm)
Length from Backplate to Center of Crankcase: 1.2" (30.4mm)
Length from front of Drive Hub to end of Crankshaft: 1.6" (39.7mm)
Width at Mounting Tabs: 2.6" (67mm)
Width of Crankcase below Mounting Tabs: 1.8" (46.5mm)
Height from Crankshaft Center to Needle Valve: 1.3" (33.8mm)
Distance between Muffler Mounting Hole Centers: 1.9" (48mm)
Carburetor Settings;
Needle Valve, 2 - 2.5 turns out from fully closed as a starting
point
Mixture Control Valve, Close throttle rotor and screw in Mixture
Control Screw until it stops, then unscrew approximately 3/4 turn.
NOTE, Mixture Control Valve is factory set and should require only
small adjustments. Refer to instruction manual for full break-in
procedures.

jxs 06/11/12
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 120AX Special Ringed Aircraft Engine from O.S. Engines. FEATURES: Modified crankshaft port timing & velocity stack on carb for more power at high RPM, compact size fits into greater range of cowls, 0.1mm head gasket for higher compression REQUIRES: Prop, fuel, glow starter, field equipment

Accessories for the O.S. 120AX Special Engine

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
 LX1608 APC 15x12 Pattern Propeller
Qty Discount Available
10.99   In Stock
 LXK129 Great Planes Silicone Fuel Tubing Standard 3'
Qty Discount Available
2.99   In Stock
 LXK134 Great Planes Ultra Precision Fuel Filter
Qty Discount Available
3.79   In Stock
 LXLPK9 O.S. Muffler Power Box 120AX
Qty Discount Available
58.99   In Stock
 LXRXC4 Tower Hobbies TOWER Power 10% Airplane Fuel Quart
Qty Discount Available
9.69   In Stock
Subtotal for this Group of Accessories: 86.45  
Click to Order all items listed in this Group of Accessories    Buy This group of Accessories

Primary Accessories   Building & Field Equipment Optional Accessories

 
Tower Hobbies Has Been Serving Hobbyists Since 1971 • Call 800-637-6050 or 217-398-3636
See Tower Hobbies Reviews at Bizrate.com
Hobbico, Hobby & Model Construction Supplies - Retail, Champaign, IL
We accept the following: We accept the following payment methods: Discover, MasterCard, Visa, American Express, Diners Club International, JCB, China UnionPay, PayPal, and BillMeLater.
Unauthorized use of any materials presented here is prohibited. Copying or reproducing any elements from this page is not permitted. All prices, descriptions and availability subject to change. Displayed within some areas of our web site, the Retail Price is suggested by the manufacturer or supplier, or estimated in keeping with standard industry practice. It may not represent the prevailing price in your area or a price that Tower Hobbies has ever offered for the item.
Copyright © Tower Hobbies All rights reserved. Do not duplicate or redistribute in any form.