O.S.SPEED R21-M05 Minicars SE Marine Engine

This is the new Minicars Special Edition O.S.SPEED R21-M05 3.5cc marine long-stroke racing engine!

First delivery is expected in early spring 2023!

Features:

• No carb included - choose your own carburetor (15mm dia neck)
• Black anodized water cooling head
• DLC coated & balanced crankshaft
• 7-port cylinder liner

Suitable for competition boats (experience level ”high”):

• Hydroplanes
• Offshore (with gear deduction)
• Endurance (with gear reduction)

Recommended fuel:

• Hydroplanes: 40-60% nitro fuel with 8% Klotz Original Techniplate + 8% Klotz Benol oil
• Offshore: 25-50% 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

Specs:

• Displacement: 3.49cc
• Bore: 16.08mm
• Stroke: 17.2mm
• Practical r.p.m. Range: 4.000～45.000 (4.000～43.000)
• Output: 2.76hp @ 35.000r.p.m.
• Weight: 260g

Included:

• R21M05 Marine Engine
• RP7 Glowplug
• Shims 0.1
• O.S.SPEED decal