Honda NSF250R Moto 3
Racing Bikes Honda NSF250R Moto 3 | |
Production | 2012 |
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Class | Racing |
Engine | Liquid-cooled, four stroke, single cylinder, DOHC |
Ignition | Full-transistor |
Transmission | Clutch: Wet multiplate |
Frame | Aluminum twin tube |
Suspension | Front: Inverted telescopic Rear: Pro-link suspension system |
Brakes | Front: Single 296mm Hydraulic disc Rear: Single 186mm Hydraulic disc |
Front Tire | 90/580R17 |
Rear Tire | 120/600R17 |
Wheelbase | 1.219 mmm |
Seat Height | 729 mm |
Weight | 84 kg (wet) |
Recommended Oil | Honda GN4 10W-40 |
Fuel Capacity | 11 Liters |
Manuals | Service Manual |
Engine[edit | edit source]
The engine featured a compression ratio.
Drive[edit | edit source]
Power was moderated via the Wet multiplate.
Chassis[edit | edit source]
It came with a 90/580R17 front tire and a 120/600R17 rear tire. Stopping was achieved via Single 296mm Hydraulic disc in the front and a Single 186mm Hydraulic disc in the rear. The front suspension was a Inverted telescopic while the rear was equipped with a Pro-link suspension system. The Honda NSF250R Moto 3 was fitted with a 11 Liters fuel tank. The wheelbase was 1.219 mmm long.
Photos[edit | edit source]
Overview[edit | edit source]
Honda NSF 250R Moto 3
A press kit issued by Honda said: "The NSF250
engine was developed exclusively for road racing, to ensure superior quality and
greater potential for commercial racing machine. With a development concept of
"lightweight, compact, high output and efficiency," numerous technological
advances were introduced to create an engine befitting a racing machine.
"The DOHC single-cylinder 249cc engine demonstrates a racing machine's power delivery and response, with intake from front and exhaust to rear to improve air charging efficiency, and a cylinder tilted back 15 degrees to concentrate the engines mass, primarily to improve its stability. In order to deliver ample power into the high rpm range, the DOHC system incorporates titanium valves for both intake and exhaust (Honda patented).
"The new design also offers improved air charging efficiency along with ram-air intake, thanks to the straight intake port and throttle body with 50-mm diameter bore. In shaft layout, the balancer shaft is placed above the crankshaft to make the engine shorter and concentrate the mass."
Explaining details of the chassis concept, Honda said it was heavily based on the RS125R chassis.
"The NSF250Rs frame is based on the RS125Rs proven unit. To optimise the rigidity in balance and torsion of a 4-stroke engine, frame specifications were determined from actual riding tests and CAE analysis. For the front engine hanger and the main pipe section, optimum balance was achieved mainly by enhancing torsional rigidity.
"A newly configured swing-arm and frame body also resulted in a structure allowing smooth torsional characteristics. On the whole, stability during braking is improved, and a leeway and nimbleness during cornering exceeding those of the RS125R is ensured. The frame offers superb handling so that riders will not feel the weight increase of a 4-stroke engine, even when approaching corners."
Make Model | Honda NSF250R Moto3 MR03 |
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Year | 2012 |
Engine Type | Liquid-cooled, four stroke, single cylinder, DOHC |
Displacement | 249.3 |
Bore X Stroke | 78.0 × 52.2 mm |
Compression | |
Fuel Supply System | PGM-FI |
Ignition | Full-transistor |
Oil Capacity (eng Oil/t.m Oil) | 1.27 Liters / 0.55 Liters |
Clutch | Wet multiplate |
Lubricating Type | Semi-Dry Sump |
Max Power | 35.5 kW @ 13000 rpm |
Max Torque | 28 NM @ 10500 rpm |
Transmission / Drive | 6 Speed / chain Constant mesh |
Gear Ratio | 1st 1.875 2nd 1.524 3rd 1.304 4th 1.167 5th 1.077 6th 1.000 |
Reduction Gear Ratio | Primary 2.952 / Secondary 2.333 |
Frame | Aluminum twin tube |
Front Suspension | Inverted telescopic |
Rear Suspension | Pro-link suspension system |
Front Brakes | Single 296mm Hydraulic disc |
Rear Brakes | Single 186mm Hydraulic disc |
Front Tire | 90/580R17 |
Rear Tire | 120/600R17 |
Caster Angle | 22°36″ degree |
Dimensions | Length 1809 mm Width 560 mm Hieght 1037mm |
Wheelbase | 1.219 mmm |
Wet Weight | 84 kg |
Seat Height | 729 mm |
Ground Clearance | 107 mm |
Fuel Capacity | 11 Liters |