On Fri, 06 Jul 2007 15:47:48 -0400, Ernest Christley
wrote:

Bill Daniels wrote:
Way back, I got a chance to play with some prototype "ATV - like" consumer
ground effect machines. They looked like a cross between a Vespa motor
scooter and an ice rink resurfacing machine. We unloaded them in a big,
empty parking lot and fired them up.

The first thing you learn about ground effect machines is that they stir up
a LOT of dust - even where you didn't expect there would be any dust.

The second thing is that they will almost uncontrollably slide downhill. In
this case, until they got to the storm drain gratings in the corner of the
parking lot where they grounded themselves - there's no ground effect above
a grating. We then faced the problem of an 800 pound machine with no wheels
firmly stuck on a storm drain grate. Fortunately, the truck that delivered
them had a wrecker crane - possibly due to the developers previous
experiences with storm drain grates.

We decided that dry land was possibly not their native environment so we
tried them over water since water is 'mostly' level.

The first thing you learn about ground effect machines over water is that
they kick up a LOT of spray - enough to thoroughly soak the driver. You
need goggles to keep the spray out of your eyes but spray covered goggles
are hard to see through.

The second thing you eventually discover is that when the engine quits over
water the thing sinks FAST. Fortunately, the developer had a water recovery
skiff with a crane and plenty of drying out stuff - possibly due to previous
experiences with over water engine failures.

Maybe this is why you don't see a lot of consumer ground effect ATV's.

Bill Daniels

Bill, that was hilarious. Thank you.

I can see I-40 now during rush hour. On of the Aircars runs over a
drainage grate and goes crashing to the ground. Then there is a 300
aircar pile-up, because short of tossing an anchor over the side, I see
nothing on the thing to make an emergency stop with.

They wouldn't be allowed on the roads in most states except possibly
for some of the more open, western states. Here in Michigan off road
vehicles are expected to *stay* of road and require a DNR permit. If
used over water they need a permit for that.

Can you imagine crossing a field and setting down in a bunch of brush?
Worse yet, how about a bunch of blackberry bushes or a bunch of small
thorn trees. Thorn trees, those are the ones with the three inch long
thorns :-)) Then again this thing probably isn't quite as sturdy as
a "brush hog"