The Lambretta Model A was the first production scooter from Ferdinando Innocenti’s Lambretta. It was designed because Ferdinando Innocenti realised the importance of cheap transport to rebuild Post-War Italy. The bike’s design was radical for its time but was also easy to operate. The bike was produced from October 1947-October 1948 and sold 9,669 units
The tubular frame was made of 2 sections; the front end was made of pressed steel connected to the steering and front forks. It came with a tool box, gear indicator, foot pedal gears and an oil measuring jug integrated into the petrol tank cap.The 123cc engine was shaft driven and direct air cooled. The Model A also came with a 3-Speed Gear Box, the front forks consisted of 2 bushes only and there was no rear suspension. It came with drum brakes and 7 inch chrome wheel rims.
 Reverse compatible to standard 200 casings and all internals including crank
 Original look with finning and jack points
 Utilises original mag flange
 Utilises original side case
 Crank on original centre line to utilise all current exhaust systems
 Utilises any currently available ignition system
 Thicker sections for strength and increased gasket face area
 Properly positioned rear brake shoe pins
 Enlarge rear axle bearing boss to accommodate bigger bearings
 Pads for case mounted reed and boosts
 Large gasket area for big capacity cylinders
 Large crank case for CR250 72mm stroke crank
 Big capacity, low cost, water cooled cylinder 300cc
 Big capacity iron lined Inter-Continental air cooled cylinder 330cc
 100% Made in England
£810 each
including seal plate and end plate.
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I built an engine into the very first production Granturismo Lambretta case numbered GT200*0001. the process involved stripping down a working engine and transferring all the parts into the new case to make sure that everything would fit.
The engine went together very well.
Below is video footage of its first few miles. 09/06/16
GT200 engine case builds 1st few miles
the new GT Lambretta engine case, case number 0001 does its first few miles.
images of the build:
Meaty
top end on
Timing
Setting the timing and also checking port timings
Piston on and studs in
Bottom end done
GT tensioner
Float check
Amazingly the float gap was exactly the same with teh same size shim as the old italian case it all came out of.
another issue
The brake cam was touching the case, I had to grind some material off the case. this was corrected on production cases
endplate on
endplate issue
This is how much I had to remove. the problem was the extra meat around the inside of the case. Corrected on production cases.
