NC 24 front forks

[bobby]

Hi all, does anybody know the correct air pressure required in the front suspension forks on the NC24?
Thanks in advance :-)

[mattyowen1]

Supposedly 8-11psi!
You are meant to pump them up with a bicycle pump making sure you do not go over 11psi because it could blow the seals

[mattyowen1]

Honda VFR400 NC24 - Specifications
Model: Honda VFR 400 NC24

Year: 1987

Category: Sport touring

Displacement: 399.00 ccm (24.35 cubic inches)

Engine type: V4

Stroke: 4

Power: 59.00 HP (43.1 kW)) @ 12800 RPM

Torque: 39.00 Nm (4.0 kgf-m or 28.8 ft.lbs) @ 10000 RPM
Max

RPM: 15000

Compression: 11.3:1

Bore x stroke: 55.0 x 32.0 mm (2.2 x 1.3 inches)

Fuel system: Carburettor. 4 x 29mm Keihin

Valves per cylinder: 4

Fuel control: DOHC

Ignition: Transistor

Starter: Electric

Cooling system: Liquid

Gearbox: 6-speed

Final drive: Chain

Clutch: Wet Plate

Dry weight: 165.0 kg (363.8 pounds)

Weight incl. oil, gas, etc: 193.0 kg (425.5 pounds)

Seat height: 785 mm (30.9 inches)

Wheelbase: 1,345 mm (53.0 inches)

Frame type: Aluminium Twin Spar Frame

Front suspension: 41mm Telescopic, coil spring, oil damped, rebound damping force air adjustable (8psi - 11psi)

Rear suspension: Pro-Arm Mono shock, fully adjustable

Front tyre dimensions: 100/90-H16

Rear tyre dimensions: 130/70-H18

Front brakes: Double disc. Nissin 2 pot caliper

Front brakes diameter: 296 mm (11.7 inches)

Rear brakes: Single disc. Nissin 1 pot caliper

Rear brakes diameter: 220 mm (8.7 inches)

Exhaust system: 4-2-1

Top speed: 210.0 km/h (130.5 mph)

1/4 mile (0.4 km): 13.050 seconds

Power/weight ratio: 0.3576 HP/kg

Fuel capacity: 16.00 litres (4.23 gallons)

[Neosophist]

Those specs are wrong nearly everywhere.

8-11psi is correct though

[mattyowen1]

Oh! I downloaded them off the Internet for my NC24, could you be so kind and tell me what they should be please?
Thanks in advance.....
Matt

[Neosophist]

Frame ID: NC24
Length: 2.010(m)
Width: 0.690(m)
Height: 1.125(m)
Wheelbase: 1.375(m)
Min Ground Clearance: 0.130(m)
Seat Height: 0.770(m)
Wet Weight: 183(kg)
Dry Weight: 164(kg)
No of Seats: 2
Fuel Economy 44.2km/l @ 60km/h constant speed
Minimum Turning Radius: 2.8(m)
Engine: NC13E Watercooled, 4 stroke, DOHC4, 16valve, V4
Displacement: 399(cm3)
Bore x Stroke: 55.0 x 42.0 (mm)
Compression Ratio: 11.3:1
Maximum Power: 59 / 12,500 (ps / rpm)
Maximum Torque: 4.0 / 10,000 (kg-m / rpm)

Carburation:-
Carburettor Type: CV
Carburettor Model: VDE2
Pilot Jet Size: 35
Main Jet Size: 115
Float Height: 6.8mm
Pilot Screw (turns out): 2.5
Idle Speed: 1300rpm +/-100rpm

Spark Plugs:-
Cold Climate: NGK C7EH9 or ND U22FE9
Standard: NGK C8EH9 or ND U24FE9
Hot Climate / High Speed Riding: NGK C9EH9 or ND U27FE9
Electrode Gap: 0.8mm - 0.9mm
Starting Method: Electric Starter
Ignition Type: Full Transistor Ignition
Firing Order: 1-3-2-4
Battery Type: 9 Ah VARTA 509 015 (YB9L-B, 12N9-3B)
Engine Oil Type: API Grade SE, SF or SG motor oil
Engine Oil Viscosity: SAE 10W40

Engie Oil Capacity:-
At oil change: 2.4(l)
At oil change (inc filter): 2.6(l)
Rebuilt / Dry engine: 3.1(l)
Fuel Capacity: 16(l)
Fuel Type: Unleaded, Minimum 91 RON
Clutch: Wet, Multi-plate, coil spring.
Gearbox: 6 speed
Gearbox Ratios:-
1st: 3.307
2nd: 2.352
3rd: 1.850
4th: 1.545
5th: 1.333
6th: 1.227
Reduction Ratio: 2.117/3.000 (Primary / Secondary)

Sprockets:-
Front: 15 teeth
Rear: 45 Teeth
Castor: 26° 10'
Trail: 96(mm)

Tyre Sizes:-
Front: 100/90-16 54H
Rear: 130/70-18 63H

Tyre Pressures:-
Front: 32psi (2.20bar)
Rear:
36psi (2.50bar) [Rider Only] / 40psi (2.75bar)
[Rider / Pillion]


Braking System:-

Front:
Twin 276mm floating disc, Twin 2 piston sliding
calipers

Rear: Single disc, 1 piston sliding caliper
Brake Fluid Type: DOT 4

Suspension:-
Front: 37mm Telescopic Tube, Air / Spring Combination, 8-11 psi dampening air adjustable
Rear: Honda / Elf Pro-Arm with Monoshock, preload adjustable.
Frame Type: Diamond

Those internet specs list the disc size as being too large, fork size as being too large weight as being too light. Stroke being too short, carbs being wrong size, wheelbase being too shot etc.

Basically they are NC30 specs butchered. The specs above, barring typing errors are correct as I typed them up from the NC24 workshop manual

[mattyowen1]

Thank you! Now at least I have the right ones to work from, thanks again matey!!!!

[mattyowen1]

Got my info from: http://www.hondarvf.com/nc24-specifications