A Vespa Sei Giorni?

The Vespa Sei Giorni is among the most sought-after collectors items. A Vespa Sei Giorni, but what’s it all about?

In 1951 the Vespa company’s racing team “Piaggio Squadra Corse” gained massive attention during a race. The “Sei Giorni Internationale” took place from the 18th to the 23rd Septemper 1951 in Varese, in the hinterland of Lake Maggiore in Italy. It was one of the hardest and most important competitions of that time: 220 participants riding over several kilometres in an off-road environment.

Rennen 6 giorni (6 Tage)

Sei Giorni = six days

Still today this six days reliability trial is known as “International Six Days Enduro”. The first race took place in England in 1913, a test of the limits of both daring racers and machines. And in 1951 the Vespa was just 5 years old!

For this race Piaggio modified a small part of three hundred 125cc Vespa models. The racing team “Piaggio Squadra Corse” participated with these ten scooters. But how could the small Vespas, built specially for this race, compete against motocross motorbikes?

Surprisingly the Piaggio company’s racing team (racers: Biasci, Cau, Crabs, Mazzoncini, Merlo, Nesti, Opesso, Riva, Romano, Vivaldi) won the competition with their Vespas, outdoing the offroad motorbikes: 9 out of 10 racers got a gold medal. In 1951, for this top performance the Vespa 125 “Sei Giorni” also won the prize of the Italian motorcycling federation and with their Italian Vespa models the three racers Giuseppe Cau, Miro Riva and Bruno Romano stole the limelight from all other racers.

Near-series racing scooters

The Vespa “Sei Giorni” was optically very similar to the series model. The main differences which were visible were for instance more tank volume, improved aerodynamics of the leg shield and a bigger engine cover.

Vespa Sei Giorni Rennroller Vespa 125 von 1951

Vespa Sei Giorni 2017

As we reported from the motorcycle show Eicma in 2016, in memory of this legendary success, Piaggio released a special edition: the Vespa Sei Giorni 300.

Vespa 300 Sei Giorni 2017

Scooter Center’s Vespa Sei Giorni

After the Eicma morotcycle show 2016, we got the idea of creating a new Scooter Center demonstrator which represents a fusion of the automatic Vespa and the classic Vespa. Just like our Vespa shop where you can just find everything you need for your modern or vintage Vespa.

We were inspired by this new model and wanted to release our own “modern” Vespa Sei Giorni. Alex Stroh (right) und Frank Winkel (left) worked on the project of our new Scooter Center Vespa Sei Giorni.


The genesis of the SC Sei Giorni          

Our new Vespa demonstrator was a normal, slightly accident-damaged Vespa GTV…

 Scooter Center Vespa SC Sei GiorniVespa Modellierung mit Bauschaum

Filled building foam?

The filled building foam was just a model for Mathias Laubsch from Blechwerk in Neuss, http://www.blechwerk.com/, who brilliantly transformed it into metal sheet.


Huge sheet metal and painting work!

For the typical “nose” we mounted a horn cover which is normally used on a Vespa VNA-VNB. We “just” welded the indicators and the hole under the tail light and Vespa Sei Giorni was brought to the painter…

All plastic parts got a silver coating so that patinatig could be made on “metal sheet” and not on bare plastic.

Then, all metal and plastic parts were painted with a deep red coating which was used in the 50s and then again with a second coating in grey before being painted eventually with the red varnish which recalls the typical coating of the first Piaggio race models.

Custom-made Vespa seat

The seat frame was made in our workshop and given to the seat specialist Holger http://www.sitzbankdoktor.de/ who sacrificed his old leather jacket and made the perfect seat for the Sei Giorni.

Racing handlebar!

The handle bar was replaced with a M-shaped handle bar by Fehling.

Vespa with race patina

In order to get the patina effect we used files and sandpaper!

Vespa Sei Giorni live!

Want to admire our customised Vespa Sei Giorni live? Then cume and visit us in our store in Kurt-Schumacher-Str. 1 in 50129 Bergheim-Glessen, Germany.

Vespa Sei Giorni Vespa GTV 300 Tuning !

Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni Scooter Center Vespa SC Sei Giorni

Last Saturday the 4th Aachen Kickstart Rideout took place. Official pictures are shown here.

We took the chance to test our Silver Fern project. All in all we drove around 200km without any problems. We also took a short distance on the Autobahn and it was just great. It is a really good touring engine with lots of power.

Nothing is more unpredictable than the weather. It was the same procedure last Saturday. We had heavy rain, hail, heavy wind and sunshine. All seasons in one day.

After the halftime stop we were lucky and we had brilliant weather till the end and everyone could enjoy the final bbq.

All in all it was a really nice rideout and we hope to see you all on our Classic Day on May 5th.

The assembly of the Vespatronic needs a lot of TLC and improved interpretation.
A further complication is the fact that the attached wiring diagram is not correct.

According to the wiring diagram, the mass and excitation voltage would be simply put together and distributed again to the ports 1 and 2 of the CDI.

It is of course only right to wire red/black from the stator plate to -1 – (the wider slot) which is connected with green on the wiring loom and blue to -2 – to connect (the narrow slot), which is connected with black on the wiring loom.

Likelihood of confusion exists with the cable box; here different colours need to be combined. All cables with dissolved connectors and which are energised during running engine have been provided with plug-in sleeves. The earth connection is not as potentially dangerous and can be equipped with a plug.
In order not to confuse the exciting voltage and the on-board vehicle electrical system which are both connected with a plug-in sleeve, you can use the following memory hook: “blue sea under the yellow sun” – in practice this works really well…

For test purposes we will adjust the stator plate to the later mark of the 2 marks available.

Once we have placed all the glory in the cable box and the flywheel is mounted again, we can start the engine to control the ignition timing.
The marks for the TDC of 25 ° have been previously determined and marked by reversal measurement.

A quick check with the strobe light…

The ignition is set to 25 ° at 2000rpm. This is a satisfactory starting point for a run on the test rig.
The goal was a 25 hp engine but have a look at the diagram yourself.

Without air filter was the 148 main jet was still OK but with filter we had to use a 145 main jet and in addition to that we had to move the NAPE needle a clip on the 2nd Position from the top.
19hp and 25Nm at 6.000rpm speaks for itself. Even at 8.600rpm there are 25hp and 20Nm on the rear wheel. In this power range there will be no power loss when changing gears. It is incredibly awesome…
To get an idea of how fast this baby can get in the end, we will make another test run – HP vs. Km/h

At a speed of 140 km/h there are still 24hp left…
What do you think? Mission accomplished?
Only thing left now is to place the remaining parts again and then we are ready for a practical test on the road…