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O.S. SPEED R21GT II ENGINE

 

Motor OS Speed R21GT II 

 

Motor de competición .21 para escala 1/8 GT Nitro. 

 

OS Engines 

 

 


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OS1DT00
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423,95 €

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O.S.SPEED R21GT-II 1/8 GT Racing Engine 

 

 

A high-performance GT engine directly descended from O.S.SPEED - Evolved to the next generation!! 

 

While inheriting the smooth feeling and good fuel efficiency of the previous model O.S.SPEED R21GT, which was well received in the European market, the home of GT cars, the power feeling in the medium and low speed ranges has been improved by reviewing the counterbalance of the crankshaft. Improved. In addition, the newly designed inner head improves idling performance, and an O-ring is used to reduce vibration and improve dust resistance. The outer head has been made lighter, and has evolved into the O.S.SPEED R21GTII with attention to detail. 

 

The crankshaft uses two tungsten counterweights. We have optimized the mass balance by reviewing the detailed dimensions. 

 

The inner head is newly designed. Improved low and medium speed feeling and idling performance. An O-ring is also used to reduce vibration and improve dust resistance. 

 

The outer head is also newly designed. Succeeded in weight reduction compared to conventional products. The outer circumference is processed to create a lacy atmosphere. 

 

Equipped with 5 scavenging ports and 3 exhaust ports to meet IFMAR regulations. 

 

Equipped with a double-adjust type 22E(B) GT carb. The reducer is a newly designed 7.0MM (RED) AL2. 

 

 

 

Specs: 

 

Stroke Volume: 3.49cc 

Bore: 16.08mm 

Stroke: 17.20mm 

Output: 2.65 ps / 2.61 hp @ 34.000RPM 

Practical RPM: 4.000-42.000 

Weight: 362g 

 

 

 

Standard accessories: 

 

Glow plug: RP6 

Reducer venturi: 7.0mm (RED) AL2 

Exhaust seal ring 

Dust cap set: ö3, ö16 & ö18mm 


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