Remote Control Car Engine
S0851DR00
O.S. ENGINES

O.S. Speed ​​R21 Euro II

O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
O.S. Speed ​​R21 Euro II | Scientific-MHD
€494.95 VAT included
Out-of-Stock
O.S. Speed ​​R21 Euro II | Scientific-MHD

O.S. Speed ​​R21 Euro II

Plus de details Out-of-Stock

O.S. Speed ​​R21 Euro II

€494.95
Shipping within 48 hours Shipping within 48 hours
346160 products in stock 346160 products in stock
Customer service Customer service
Secure payment Secure payment
Paiement CIC Paiement payplug Paiement fintecture
This engine inherits the smooth and easy-to-use feeling of the predecessor, O.S. SPEED R21 EURO Spec., And by reviewing the counterbalance of the crankshaft, low and mid end power delivery has been improved. The smooth RPM drop and idling stability are also improved, and the optimum performance is demonstrated even in the long and harsh race scene. Succeeding the previous model, every part has been improved including the outer head with new design to improve the cooling performance.

Specs :
  • Displacement: 3.49 cc / 0.213cu.in.
  • Bore: 16.08mm / 0.633 in.
  • Stroke: 17.20mm / 0.677 in.
  • Output:2.8 ps / 2.76 hp / 35,000 r.p.m.
  • practical rpm range: 4,000-45,000 r.p.m.
  • weight:340g / 11.99 oz.
  • Glow plug RP7
  • Exhaust seal ring Dust cap set (?3??16??18)

The outer head adopts the same design as the R2104, which has both high cooling performance and light weight with original laser marking.

Uses the O-ring embedded inner head used in the R2104. The O-ring uses an oil-resistant one (black).

The cylinder with 7 ports and piston have a new design with cooling holes added to the bottom of the exhaust with the newly designed crankcase.

The crankshaft is a specific just for this engine and uses 3 tungsten counterweights. This has improved the torque feeling at medium and low speeds and idling performance.

Comes with 21M2 (B) carburetor, which is popular with many racers for maximum performance. ?8.5 reducer also comes as standard equipment.

Motor use
Cars
Engine displacement
2 stages 3.5cc & +
Engines
Thermal
Level of use/difficulty
Thermal
Product types
Motors and variators for radio -controlled models
Products you might like
Shipping within 48 hours
Shipping within 48 hours
Returns and exchanges within 14 days
Returns and exchanges within 14 days