OS MAX AX two-stroke engines are the latest series of powerful propulsion units, designed primarily for sport and aerobatic models. The thoroughly revised design features a unique ABL liner (Advanced Bimetallic Liner) with a two-layer surface treatment made of specially developed alloys to minimize friction and wear during operation and ensure high performance and long service life. The futuristically shaped hexagonal cylinder head with large cooling fins provides excellent cooling and allows for higher performance with the same dimensions as the classic FX series. Thanks to this, you can benefit from the large selection of kits and model plans that have been developed for OS MAX two-stroke engines in recent decades, or achieve a performance increase for your existing model with an FX engine!

OS MAX 35 AX is a powerful two-stroke engine with a crankshaft mounted with a pair of ball bearings, suitable for sport and competition aerobatic models of all types. It is equipped with a 21K dual needle carburetor, whose main needle is oriented obliquely backward for safe adjustment while the engine is running. The basic set also includes a very efficient expansion muffler type E-3080 (Power Box). The direction of the exhaust opening can be changed by rotating the rear of the muffler by 360 degrees.

• Same dimensions as the classic OS MAX 25FX and 35AX.
• The crankshaft has a thread for the propeller nut UNF 1/4-28.
• Recommended propeller dimensions: Break-in: 10x6" / Sport and Aerobatics: 10x6-7", 11x6", 12x6".
• Recommended fuel tank: 180-250 ml; 180 ml tank is sufficient for 10 minutes of aerobatics, provided you don't always fly at full throttle.
• Recommended fuel: at least 18% castor oil or synthetic oil (or a mixture of synthetic oil and castor oil), 5-20% nitromethane.
• Recommended glow plug: OS MAX No. 8, No. 7 or No.6.

Engine set includes:

• OS MAX 35 AX engine with RC carburetor 21K
• Muffler type E-3080
• Main needle extension set
• Glow plug No. 8
• Instructions

Technical data:

• Displacement: 5.77 ccm
• Power approx. (1.3) (HP) at 16,000 U/min
• Speed range: 2,500 - 17,000 U/min
• Bore: 20.2mm
• Stroke: 18mm
• Total weight: 363g
• Carburetor: 21L
• Shaft thread 1 /4 "-28 UNF
• Weight 280 g
• Length to hub: approx. 75.6 mm
• Width: approx. 46 mm
• Height: approx. 75.5 mm
• Mounting hole spacing lengthwise 15 mm crosswise 38 mm
• Mounting hole Ø 3.2 mm
• Recommended propellers: 10x6" / Sport and Aerobatics: 10x6-7", 11x6", 12x6"

Recommended fuel:

• at least 18% castor oil or synthetic oil (or a mixture of synthetic oil and castor oil), 5-20% nitromethane.