Noise control for big gassers.
Hi,
Some guys here in Ireland are trying to get IMAC up and running.
Normally there are no noise limits in IMAC - as I understand it !!.
However here we are bound by our National rules where there is a noise limit of 96db at 3m.
Also for F3M there is a 96 db limit over tarmac and 94db over grass - both also at 3m - so this must be possible !!?
I am looking for guidance on what will get 50cc to 80cc singles and 80cc to 210cc multiple's under these limits.
Mounts ,props, exhaust silencers etc.
All help appreciated but especially examples of actual installs c/w results.
Brian