Thursday, August 2, 2012

I am the very model of the modern mopedalist

I have bought a new vehicle, a Persian Ivory 1980 Peugeot 103 LVS U3 moped. Top of the line, baby! It could use new seat padding and I think a reed valve; I'll probably save up for a 15mm carburetor. Although as it took two years for me to buy this, don't expect that any time soon. I am considering hand-porting the engine, which should yield some notable gains.

In the meantime: Specs!

1980 Peugeot 103 LVS U3


Type                           Two-stroke aircooled piston port single, chromed aluminum cylinder
Displacement                       49 CC (
Bore x stroke                        40 x 39 mm
Compression ratio               8.4:1
Horsepower @ RPM           1.5 @ 5,000 (rated)
Torque @ RPM                    NA-lbs.ft. @ 3,600
Main bearings                      2
Fuel system                          12mm Gartner side-draught reed valve carburetor
Ignition system                    6-volt/26 watt Peugeot high-voltage flywheel magneto
Lubrication system             Two-stroke/total loss
Exhaust system                   Single steel, long baffle muffler


Type                                       Variator six-weight automatic extensible pulley centrifugal clutch; Vee belt primary 
                                                transmission; chain to rear sprocket
Ratio                                      11T front x 8-inch, 52T rear sprocket

Type                                       Direct
Ratio                                      1:1

Type                                       Manual; cable operated
Front                                      3.5-inch internal expanding drum
Rear                                       3.5-inch internal expanding drum

Construction                         Steel tubing and pressed steel frame
Body style                             1+1 passenger moped
Layout                                   Mid engine, rear-wheel drive

Front                            Telescopic forks
Rear                             Shock absorbers and telescopic supports
Wheels                          Lelue chromed wire
Front/rear                              17 x 1.35 inches
Front/rear                              17 x 2.5 inches

Wheelbase                            44.09 inches
Overall length                       69.29 inches
Overall width                        25.20 inches
Overall height                       40.5 inches
Front track                            Single
Rear track                             Single
Curb weight                          109.8 pounds

Crankcase                             None
Cooling system                    Aircooled
Fuel tank                               1.05 gallons
Transmission                        Dry
Rear axle                               Grease

BHP per CC                          32.66
Weight per BHP                  70 pounds
Weight per CID                    6.71 pounds


0-60 MPH                             NA seconds
¼ mile ET                              NA seconds @ 35 MPH
Top speed                             31 MPH* (35 MPH indicated)
MPG                                       100.1*
*Source: Peugeot


Base price                             $NA


Simon sez said...

I own an identical to your 103. Same color and everything! Mine is also bone stock with the exception of a new CDI, I was having problems with the stock magneto and just ditched it. Sometime soon I will be ditching the gurtner and installing a dellorto 15.15 and new carbon fiber reeds. At that time I'm planning on doing some mild porting and case matching. Mine is one of the prettiest bikes in Boston!

Simon sez said...
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