OP
@kudu avatar
UTC

Member
1979 P125X, 1983 P125X America
Joined: UTC
Posts: 25
Location: Florence, Italy
 
Member
@kudu avatar
1979 P125X, 1983 P125X America
Joined: UTC
Posts: 25
Location: Florence, Italy
UTC quote
I am prepping for a long road trip and thought I'd pull the flywheels of my two Vespas (one a 79 P125X and the other a 83 P125X America) to inspect the condition of the ignition systems.

Using the standard tool from Scooter Center, the flywheel came off the 79 as expected and I was able to do the necessary inspection and cleaning. The flywheel seems to be the original Ducati.

However, the same tool does not seem to fit the 83 America. The internal diameter seems to be slightly smaller and/or the threading is different. Is this possible? This flywheel is stamped "AEL" instead of Ducati, so I am not sure that it is original.
@gickspeed avatar
UTC

Ossessionato
Joined: UTC
Posts: 2164
Location: Racing Capital of the World
 
Ossessionato
@gickspeed avatar
Joined: UTC
Posts: 2164
Location: Racing Capital of the World
UTC quote
Kudu wrote:
I am prepping for a long road trip and thought I'd pull the flywheels of my two Vespas (one a 79 P125X and the other a 83 P125X America) to inspect the condition of the ignition systems.

Using the standard tool from Scooter Center, the flywheel came off the 79 as expected and I was able to do the necessary inspection and cleaning. The flywheel seems to be the original Ducati.

However, the same tool does not seem to fit the 83 America. The internal diameter seems to be slightly smaller and/or the threading is different. Is this possible? This flywheel is stamped "AEL" instead of Ducati, so I am not sure that it is original.
use a set of calipers and a metric thread gauge; these two tools will tell you exactly what you are dealing with on this flywheel.

It's possible that the makers of the AEL used something different.
UTC

Lurker
P125X
Joined: UTC
Posts: 4
Location: Indy
 
Lurker
P125X
Joined: UTC
Posts: 4
Location: Indy
UTC quote
On the ScooterWest page they have a flywheel tool that is 27mm left hand thread which they state is for random Asian-made flywheels on vintage Vespas.

Perhaps this is what you have, as the standard tool is 28mm.
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