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Three-Wheelers
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Gene Freeman's

HOTSTUFF

first posted 10/23/2001

last updated 3/20/2002


Gene Freeman can be reached at oldsmoothie@wildmail.com



Engine: 1982 Yamaha Maxim

Type

DOHC transverse four cylinder air-cooled

Displacement

650 cc (40 ci)

Ignition

solid state electronic

Rated HP (SAE)

75

Compression Ratio

9.2:1

Redline RPM

9,500

Fuel

regular
Transmission: integrated

Type

five-speed constant-mesh wet clutch

Intermediate drive

extended balanced tubular shaft

Final drive

bevel gears

Reverse gear:

electric motor, friction drive

Maximum speed in gears

(1) 50 (2) 70 (3) 91 (4) 113 (5) 128
Chassis: Owner built / mainly aircraft-quality aluminum

Front suspension

IFS, trailing arms, torsion bars, variable rate/pre-load springs, independently adjustable air shocks, 1969 Subaru components

Rear suspension

Yamaha swing-arm, self-leveling Nivomat (BMW motorcycle) shocks

Steering

Aluminum rack and pinion (Subaru 360)

Brakes

Double leading-shoe, finned aluminum drums (front)
  Yamaha drum (rear) for parking only

Dry weight (with body)

725 lbs
Body: Owner built / fiberglassed cloth skin over 1/2" rigid urethane foam

Weight (complete)

85 lbs

Mounting

Threepoint, quick-detach latches, single aircraft electrical plug. Dismount time - 30 sec.
General dimensions:

Wheelbase

80"

Track width

47"

Overall length (body)

136" (11' 4")

Overall width (body)

58" (4' 10")

Height at top of windshield

36"
Instrumentation: speedometer, tachometer, fuel level, oil level, oil temperature, neutral indicator
General information:

Accumulated mileage approximately 10,000. Problems to date - none. Longest single trip, San Diego to Vancouver British Columbia (1983), overall mileage at 70 mph - 52. Performance equal to the original motorcycle, handling excellent. Construction time perhaps 4,000 hours over a period of four years. Approximate cost - $2,000.

Owner/Builder: Gene Freeman, San Diego CA.


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