June 11, 2019

XTR Racing AR3 Tuned off-road engine

XTR Racing have announced the release of their new AR3 Tuned nitro engine for 1/8th off-road applications. The power plant is based on the last European Champion engine but incorporates numerous improvements and refinements with focus on maximum bottom and top-end power – thus the 3-port engine features a ceramic main bearing and diamond-coated crankshaft. The crankshaft is individually Tungsten-balanced and silicone-filled while thhe sleeve and piston set is specially selected and matched. Furthermore the engine features a 10-rib cooling head.

– 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

– 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

Source: XTR Racing [xtr-rc.com]


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