I have good friend who happens to be a big cheese at Freudenberg, a big German company specialising in vibration control and rubber products for the automotive industry, amongst other things. I asked him for advice on how best to mount my generator, and he has permitted me to reproduce his advice here in case it is of use to anyone else. Bear in mind that I have a petrol generator that will be quite a bit lighter than the units many of you will be using. The advice applicable to my generator was as follows:
"I have sorted 3 mounts out for you which I believe will be best suited to mounting your generator and at the same time being relatively easy to fix.
The biggest problem is that at 65kg the generator is relatively light and so, to give good isolation we needed to consider a really soft mount. I then had concerns that if it was too soft it would/could move under heavy braking and knock into other things. The parts I am sending overcome that.
What you need to do to get the best isolation is to try and disperse the load evenly over the 3 (three) mounts and at the same time keep them as far apart as possible Ė 4 would be too many and again reduce the vibration isolation. You may have to build a bit of a chassis for the generator frame to do I canít remember what it looked like, if you do this, the mounts could be outside the footprint of the generator and would probably work better."
To see the mounts I am receiving, go to this page - http://www.simrit.de/E/start.htm
- then select Products / Vibration Control / Type List / V-Mounts
Freudenberg are principally OEM suppliers (the car you drive almost certainly has some of their products in it), but they do have distributors and on-line sales if you want to get hold of their products
Hope that is of some use to someone