OS SPEED R21-M06 Marinmotor
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Art.nr: OS0R21M06
O.S.SPEED R21-M06 - 2025 Minicars Marine SE Racing 3.5cc Engine
This is the new 2025-edition Minicars Marine Special Edition O.S.SPEED R21-M06 3.5cc long-stroke competition engine. The R21-M06 has a new piston & liner, a new conrod, a new crankshaft & a ceramic main ball bearing.
Features:
New DLC coated & balanced R21 Euro-II crankshaft with more timing
New 9-port cylinder liner with 3-port exhaust
New piston with 3 oil-grooves
New Ceramic main ball bearing
New Reinforced "R" conrod
New RP6 Turbo plug (instead of RP7)
O.S.Speed developed black crankcase with Minicars Marine Laser Engraving
Black anodized water cooling head with Minicars Marine Special Edition Laser Engraving
Backplate with steel thrust plate for lower friction and increased durability
No carb included - choose your own carburetor (15mm diameter neck)
Suitable for competition boats (experience level high):
Hydroplanes
Offshore (with gear deduction)
Endurance (with gear reduction)
Recommended fuel:
Hydroplanes: 12% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
Offshore: 12% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
Endurance: 12% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
We don't recommend running the engine with less oil than the above recommended levels. You may add more recin/castor oil (Klotz Benol) in extreme conditions and heavy loads.
Specs:
Displacement: 3.49cc
Bore: 16.08mm
Stroke: 17.2mm
Crankshaft dia: 14mm
Practical r.p.m. Range: 4.000～43.000
Output: 2.76hp @ 35.000r.p.m.
Weight: 265g
Water Cooling Nipple Thread: M5x0.8
Included:
O.S.Speed R21-M06 2025-Edition Minicars Marine Engine
RP6 Glowplug
O.S.Speed flywheel cone
O.S.Speed decal
Printed Manual & partslist
This is the new 2025-edition Minicars Marine Special Edition O.S.SPEED R21-M06 3.5cc long-stroke competition engine. The R21-M06 has a new piston & liner, a new conrod, a new crankshaft & a ceramic main ball bearing.
Features:
New DLC coated & balanced R21 Euro-II crankshaft with more timing
New 9-port cylinder liner with 3-port exhaust
New piston with 3 oil-grooves
New Ceramic main ball bearing
New Reinforced "R" conrod
New RP6 Turbo plug (instead of RP7)
O.S.Speed developed black crankcase with Minicars Marine Laser Engraving
Black anodized water cooling head with Minicars Marine Special Edition Laser Engraving
Backplate with steel thrust plate for lower friction and increased durability
No carb included - choose your own carburetor (15mm diameter neck)
Suitable for competition boats (experience level high):
Hydroplanes
Offshore (with gear deduction)
Endurance (with gear reduction)
Recommended fuel:
Hydroplanes: 12% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
Offshore: 12% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
Endurance: 12% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
We don't recommend running the engine with less oil than the above recommended levels. You may add more recin/castor oil (Klotz Benol) in extreme conditions and heavy loads.
Specs:
Displacement: 3.49cc
Bore: 16.08mm
Stroke: 17.2mm
Crankshaft dia: 14mm
Practical r.p.m. Range: 4.000～43.000
Output: 2.76hp @ 35.000r.p.m.
Weight: 265g
Water Cooling Nipple Thread: M5x0.8
Included:
O.S.Speed R21-M06 2025-Edition Minicars Marine Engine
RP6 Glowplug
O.S.Speed flywheel cone
O.S.Speed decal
Printed Manual & partslist