Hello moped lovers. I have just started an attempt to fully rebuild an old 1967 Raleigh RM8 (AV7) moped! The engine was seized so the plan is to fit a new engine as pictured below which comes complete with a variator pulley. The original moped did not have a variator and the engine was fixed at the top and bottom without any vibration mounts.
So my question is can I simply allow the top mount to swivel and fit a damper type spring at the bottom side of the engine to allow it to swivel as the variator operates? I have read in other posts that a 40lb (200N) damper should be suitable. But will the engine need any other support at the bottom to compensate for the horizontal forces of the engine or will the top mount be sufficient?
Also as the bike did not have any vibration mounts in the original setup, will I need to configure the top mount to add some kind of vibration mount?
All opinions and advice will be greatly appreciated especially from those that have attempted such tasks in the past. Many Thanks.