Generator Storage?

Sleepless, happily no need for vibration dampening with my setup.  I ran a test 2 months ago with the generator running on the cargo tray in front of the truck when we did a boondocking trip.  I could barely notice it with the A/C off.  Once the A/C was on it was impossible to hear or feel the genset over the A/C.  Since it is an inverter model it idles down pretty low, and doesn't even break 3000 rpm when in overload mode. 

I don't think it has anything to do with the layout, because everything is outside.

I have a Honda 2000 it is build in a box in the back of the trailer. I diverted the exhaust to the ground insulated the box, reduced noise by 50%. The generator is mounted on a floating bottom that I can raise with a bottle jack and there for eliminating 99% of vibration.

Our first motor home was a 1979 20' Winnebago on a Toyota chassis.  I built a similar box enclosure for a Coleman generator, mounted on an angle iron platform which was an extension of the vehicle's frame.  Ground clearance was not a problem, but vibration was.  I installed resilient motor mounts between the generator and the floor of the box.  Those "cushions" greatly reduced vibration.  Doug, I suggest you incorporate something similar in your design. 

Living on the east coast of Florida, I have a 5500 watt generator used only for prolonged power outages during severe storms and hurricanes that pass near our area.  It is one loud generator, typical of most larger units.  I built a 3-sided enclosure for it, and lined the inside with  insulation to muffle and funnel the sound away from our home.  It makes a big difference in the sound level. 

I had the same problem with our genset - no bed to store it in, and for our long trip coming up I didn't want to have to move it around to use it.  I also didn't want to mount it on the pod since the vibration will travel through the frame making it impossible to sleep.

My solution was to mount a front receiver hitch on the truck and get a cargo tray.  I've built a box that opens on the sides, front and top so I can fuel it and start it but leave the sides open while it runs.  That protects it from the rain.  Fully closed it is protected going down the road.  I'm hoping to post pictures of it soon.  The truck absorbs most of the vibrations and then nothing gets past the hitch ball into the pod's frame.