XTR RACING have introduced the new AR3 TUNED nitro engine. AR3 engine is based on the last European Champion engine but incorporates numerous improvements and refinements with focus on maximum bottom and top-end power. The 3-port engine includes a ceramic bearing and diamond-coated crankshaft. The crankshaft is individually balanced with a tungsten weight and filled with silicone. The sleeve and piston set were specially selected and matched. The engine features 10-rib engine head.
Features:
– 3-port, high-competition 1/8 off-road engine
– Maximum bottom and top-end power
– 14mm high-precision, silicone-filled crankshaft
– DLC Diamond-like coated crankshaft
– Tungsten balanced crankshaft
– CNC-machined silicium piston
– Specially selected and matched sleeve & piston set
– Ceramic ball bearings
– Designed and manufactured in Slovakia, Europe
Specifications:
– Displacement: 3.5cc
– Bore: 16.40mm
– Stroke: 16.40mm
– Weight: 349g
– Max. power: 2.6 HP @ 34,000 RPM
– Practical range: 4,000-42,000 RPM
– Ports: 3 transfer ports
– Piston: CNC-machined silicium
– Sleeve: CNC-machined brass, hard chrome plated
– Front ball-bearing: 7x19mm, made in Japan
– Rear ball-bearing: 14×25.8mm ceramic, made in Germany
– Crankshaft: 14mm
– Carburettor: Alloy body with thermal isolation; 3-needle with modular venturi
– Exhaust position: Rear
