The CB900 Custom Chopper:
Made by me, for me, on my back porch. This is a true one-of-a-kind
traditional frankenstein chopper. I used Honda parts whenever possible,
aftermarket for the minor stuff, and plenty of custom-made parts.
- Frame: CB900C '82, modified
- Engine: CB900C '82, rebuilt
- Carburetors: 34mm Mikuni, from '81? Suzuki GS1100E (I think)
- Carb boots: Custom-made from 1.5" pool/spa hose
- Carb reinforcement mount: custom-made
- Exhaust: '93 CB750SC Nighthawk header tubes, with 1-3/8" OD tube
tacked in after the underside bend
- Wiring Harness: CB900C '82, minimal modifications (mostly for seat)
- Fuse Box: custom made, under tank
- Battery Tray: custom made, in/under swingarm
- Front Seat: VF700C '87, re-covered
- Rear Seat: VF700C '87, "interestingly" mounted
- Fuel Tank: VT1100 '87-'94, repainted
- Forward Controls: Mapam Restyling Universal, on custom-made mounts
with custom-made linkages. One linkage piece pulled from some 1979
Suzuki, the other fabricated from a 1980 CB900C brake pedal.
- High/Low Suicide Shifter: Custom, with skull on top
-
- Swingarm, shaft & joint: GL1200 '84, U-joint shortened
- Rear wheel and rotor: GL1200 '8?
- Rear Brakes: CB900C '82
- Final drive: GL1200 '8?
- Rear Suspension: Suzuki VS750 12" shocks
- Rear Fender: None, but it needs one
-
- Triple Tree: GL1100 '81
- Forks: VT750 '83
- Fork Brace: GL1200 '85
- Front Wheel and Rotors: VF1100C '83
- Front speedo gear: VF1100C '84
- Front Axle: VF1100C '83
- Axle and caliper mount spacers: Custom-made
- Front Brakes: VT700 '85
- Handlebars: CMX450C '86 plus dogbone risers
- Hand Controls: GL1100 or GL1200, don't remember. Shortened throttle
sleeve for standard 7/8" grips.
- Headlight/turn signal mount: Aftermarket
- Headlight: GL1000 '76
- Turn Signals: Aftermarket fluted bullet lights
- Tacho and Speedo: Aftermarket 2.25" mechanical drive
- Oil Cooler: '93 CB750SC Nighthawk
-
- Dry weight: 600? pounds
- Horsepower: 75hp at 8000 rpm (less HP, more torque)
- Fuel Capacity: 5.0 US gal, including 1.0gal reserve
- Engine Oil: 4.7 US qt
- Transfer Case Oil: 0.6 US qt
- Final Drive Oil: 0.2 US qt
- Final Drive: 2.89:1
- Primary drive: 2.04:1
- Secondary Drive: 0.72:1 low, 0.62:1 high
- Quarter-mile: low 13's (est)
-
- Seat Height: 26 in
- Wheelbase: 68.75 in
- Ground Clearance: 4.5 in
- Rake: 33 degrees by my measurement - 4.5 degrees over stock
- Trail: 4.25 in
-
- Compression Ratio: 8.8:1
- Octane recommendation: (r+m)/2 method, 86 octane or better
- Spark Plug gap: .9mm (.035in)
- Valve Clearance (cold):
- Intake: .127mm (.005in)
- Exhaust: .20mm (.008in)
Replacement Parts:
- Spark Plugs: NGK DPR8EA9 works fine. There's a compatible Autolite plug if you're really in a bind.
- Oil Filter: Fram #6009. Available at Wal-Mart and most Auto stores.
- Tires:
- Front: 110/90-18
Metzeler ME880 Marathon
- Rear: 150/90-15
Dunlop Elite II or Metzeler ME880 Marathon
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