At the moment i'm restoring my Lammy TV200. I've ordered a SIP Speedo, but am in doubt wich sensor to use. The one that goes into the normal lambretta connection seems more handy than the option with the magnet. As with the swingarms in the front you'll have to lead the magnet sensor all the way to the back.
Anyone who has experience with the sensor on the normal connection on the front wheel?
Is the speed accurate?