O.S. SPEED R21 EURO II [1DR00]

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Product Description ■ O. S. SPEED R21EURO II engine for O. S. Ogawa Seiki RC car.
"How fast and smooth it can be driven."
The 0. S. SPEED R21EURO SPEC. is highly popular in Europe, which has a strict eye on 1/8 racing engine.
While inheriting the smooth and easy-to-handle feeling of the previous model, the counterbalance of the crankshaft has been revised to improve the power in the middle and low speed range.
The low speed and idling performance have been improved to provide optimum performance even in long and severe racing scenes.
The outer head has been revised to the 0. S. SPEED R21EURO II with a special focus on the slow down and idling performance.
The outer head has been revised to improve the cooling performance and other features.
The outer head has been revised to improve the cooling performance and weight.
The inner head with the O-ring specifications adopted in the R2104 has been applied with special laser processing.
The "O" ring has been adopted with oil resistance (black).
The cylinder and piston with 7 ports has been adopted with an additional cooling hole in the exhaust lower part. The "O" ring has been adopted with oil resistance (black).
The crankshaft is a special product made with 3 pieces of tungsten. This improves the torque feeling at middle and low speeds and idling performance.
The carburetor uses 21M2 (B), which has been highly evaluated in various races. φ 8.5 Reducer standard equipment
[Product Details]
Stroke volume : 3.49 cc / 0.213 cu. in.
Bore : 16.08 mm / 0.633 in.
Stroke : 17.20 mm / 0.677 in.
Output : 2.8 ps / 2.76 hp / 35000 r. p.m.
Practical rotation speed : 4000-45000 r. p.m.
Weight : 340g / 11.99 oz.
Standard accessories : Glow Plug RP7, Exhaust Seal Ring O. S. SPEED Dust Cap Set φ 3, φ 16, φ 18 Each 1 piece 2104