" With all this talk of using a gas powered blower would someone please
explain
how that blower is going to overcome the effects of altitude and maintain
the
same velocity of air. It is going to drop off in power just as the engine
will
and at altitude its effect will be nil.

Bob Reed

"IF" you hook a leaf blower to pressurize the carb, and IF the carb was the
type that could deal with the pressure without building an airtight box
around it, and IF the CFM of the blower was high enough to be greater than
the CFM of the engine at WOT, and IF the blower had a carb that could adjust
to the altitude without going lean, and IF the blower still had a few inches
of mercury pressure left over after all of that, it would supply a sensation
of boost to the engine to raise the manifold pressure back up to what it was
at sea level while it was buzzing along at, say, 8,000 feet.

Yes, the blower wooould have lost some of its power compared to sea level,
but what I would propose is turbo normalizing, so the increased power is of
no use at sea level. Of course, it could be used to provide a boost for
take off and such.

Now, for all of the "IF"s !!! Not that many induction systems would
take the added pressure without modification. Then there is the regulating
valve for the turbonormalizing to deal with. I don't believe the CFM would
be enough to keep up with more than a small (40 -50 HP ?) engine. No one
has taken a pressure measurement from the home depot blower yet, so "I"
doubt that it could produce more than one or two inches of additional
pressure. (if that much)

More reasons why I doubt the validity of such a Rube Goldberg setup.

The superchargers that can do a good job of increasing manifold pressure use
more HP than a 31 cc motor could ever produce.

There is a reason the superchargers turn 80,000 RPM (some less, some more)
They have to, to produce enough boost pressure.

The superchargers also have very sophisticated impellers to deal with
airflow at these speed, and the home depot blower does not have any
sophistication.

Now I put out a disclaimer. This was not any of my idea, nor would I do
such a thing, but it is a semi-interesting mental exercise!

How's that? :-)
--
Jim in NC