25LA-S Control Line

O.S. technology comes to control-line engines!

Control-line pilots can take advantage of the power and affordability that have made "LA" the most popular letters in R/C.

O.S. 2-year Limited Warranty

LA-S engine fuel inlet & needle valve photo
Here's a bonus feature found on all LA-S engines: the fuel inlet and needle valve can be oriented either horizontally or vertically for added mounting flexibility.
  • Specifications
  • Exploded Views
  • Parts Listing
  • Accessories
Stock Number: OSMG1426
Displacement: 0.249 cu in (4.07 cc)
Bore: 0.709 in (18 mm)
Stroke: 0.630 in (16 mm)
Practical rpm: 2,000-16,000
Output: 0.59 hp @ 15,000 rpm
Weight: 6.54 oz (185.5 g)
Includes: #A3 glow plug, E-2030 muffler
Recommended Props: 9x6, 10x5

Primary Accessories

Stock Number Mfr Number Product Description Quantity Needed
 TOPQ5060   TOPQ5060  Top Flite 9x6 Power Point Propeller 1

Field Equipment

Stock Number Mfr Number Product Description Quantity Needed
 GPMQ4131   GPMQ4131  Great Planes Silicone Fuel Tubing Standard 3' 1
 GPMQ4150   GPMQ4150  Great Planes Ultra Precision Fuel Filter 1
 HCAP3335   HCAP3335  Hobbico Safety Stick Engine Starter 1

Optional Accessories

Stock Number Mfr Number Product Description Quantity Needed
 OSMG2612   22325100  O.S. Muffler Extension #842 1
 OSMG2784   71908100  O.S. Motor Mount 25LA 1
 OSMG2924   23024008  O.S. Spinner Nut 20-48 1
 OSMG5870   71531000  O.S. Bubbleless Clunk 1
 PAAP1453   PT31  Pacer Zap After-Run Engine Oil 1 oz 1