Tuesday, June 27, 2023

O.S.SPEED R21-M05 Minicars Marine 3.5


Introducing the new R21-M05 Minicars Marine 3.5 engine made by O.S.SPEED!

Note, this special edition is only available in Europe through Minicars Hobby Distribution AB's B2B dealer network.


Features:

  • Newly developed O.S.Speed black crankcase with Minicars Marine Laser Engraving
  • Black anodized water cooling head with Minicars Marine Special Edition Laser Engraving
  • DLC coated & balanced "SG-type" crankshaft (4.5mm balance weights)
  • 9-port cylinder liner with 3-port exhaust
  • 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: 25-60% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
  • Offshore: 16-40% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
  • Endurance: 16-40% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
  • Don't run 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 diameter: 14mm
  • Practical r.p.m. Range: 4.000~43.000
  • Output: 2.76hp @ 35.000r.p.m.
  • Weight: 265g
  • Water Cooling Nipple Thread: M5

Included:

  • O.S.Speed R21M05 Minicars Marine Engine
  • RP7 Glowplug
  • O.S.SPEED decal
  • Printed Manual & partslist

Click Here

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