I still use Latex rubber padding left over from the discrete components in electronics days.
Krproton,
Which spinner do you have on your plane? What rpm are you getting with that prop?
ORIGINAL: krproton
Thanks thevirginian.
There is a thick film of RTV silicone rubber on the bottom of the ignition box and the plywood mount to absorb vibration. This has been working for last flying season and this season so far. Do you think this is sufficient?