High Altitude operations (Turbo charge???)

If your blower has an exhaust velocity of 200 MPH the maximum pressure
recovery in a diffuser would be about .7 pounds/in2, realistically about .5
lbs/in2.

RJ

"Roger Halstead" wrote in message
...
On Sat, 5 Jul 2003 07:05:04 -0400, "Morgans"
jisumorgan@charterdotjunkdotnet wrote:


"Rich S." wrote in message
...
"Morgans" wrote in message
...

It might work more better to have it blowing into the engine for this
poster's intent. :-)
--
Jim in NC

Ah.... but would it?

Rich "Best use of horsepower?" S.



So you think the leaf blower idea would be about as effective at
increasing
HP, as farting into the carb for the methane content?

I need to measure the pressure, but I'd guess the one I have with the
200 mph exhaust is about 15 inches or more.

However were it deadheaded, I don't know what it could do.

Roger Halstead (K8RI EN73 & ARRL Life Member)
www.rogerhalstead.com
N833R World's oldest Debonair? (S# CD-2)

You may have a point. Anyone have some pressure gauge that could measure
the small amounts of boost at the business end of a leaf blower? I would
be
curious to see what good one would do.

Didn't a guy use a two cycle engine setup to boost his engine for a race
lately? What kind of deal did he use?

"RJ Cook" wrote in message
.. .
If your blower has an exhaust velocity of 200 MPH the maximum pressure
recovery in a diffuser would be about .7 pounds/in2, realistically about
..5
lbs/in2.

RJ

Sounds like a good swag. How does lbs/sq.-in relate to inches of mercury
(as in manifold pressure)?
--
Jim in NC

In article , "Morgans"
jisumorgan@charterdotjunkdotnet writes:

If your blower has an exhaust velocity of 200 MPH the maximum pressure
recovery in a diffuser would be about .7 pounds/in2, realistically about
.5
lbs/in2.

RJ

Sounds like a good swag. How does lbs/sq.-in relate to inches of mercury
(as in manifold pressure)?
--
Jim in NC


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
www.kisbuild.r-a-reed-assoc.com (KIS Builders Site)
KIS Cruiser in progress...Slow but steady progress....

"Ladies and Gentlemen, take my advice,
pull down your pants and Slide on the Ice!"
(M.A.S.H. Sidney Freedman)

RobertR237 wrote:

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, they've told you already. They're going to put a turbo on the
blower. Sheesh! 8*)

--
----Because I can----
http://www.ernest.isa-geek.org/
------------------------

In article , Ernest Christley
writes:

RobertR237 wrote:

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, they've told you already. They're going to put a turbo on the
blower. Sheesh! 8*)



OK, and they are going to power the turbo with what?


Bob Reed
www.kisbuild.r-a-reed-assoc.com (KIS Builders Site)
KIS Cruiser in progress...Slow but steady progress....

"Ladies and Gentlemen, take my advice,
pull down your pants and Slide on the Ice!"
(M.A.S.H. Sidney Freedman)

A teeny tiny leaf blower from the Barbie Collection.

" OK, and they are going to power the turbo with what?


Bob Reed
www.kisbuild.r-a-reed-assoc.com (KIS Builders Site)
KIS Cruiser in progress...Slow but steady progress....

"Ladies and Gentlemen, take my advice,
pull down your pants and Slide on the Ice!"
(M.A.S.H. Sidney Freedman)

I've got a electric (110VAC) leaf blower. If you put a converter on
your dc and came out with 110VAC you could use the electric leaf
blower and not have to worry about the gas leaf blower having altitude
problems (reduced power output) G

Where theres a will, theres a way.

If the leaf blower don't give any engine boost, then it could be used
for pilot cooling on the hot muggy days like we have here in Houston
vs A/C in the bird.


Big John
Pilot, ROC Air Force


On 08 Jul 2003 01:29:29 GMT, osit (RobertR237)
wrote:

In article , Ernest Christley
writes:

RobertR237 wrote:

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, they've told you already. They're going to put a turbo on the
blower. Sheesh! 8*)



OK, and they are going to power the turbo with what?


Bob Reed
www.kisbuild.r-a-reed-assoc.com (KIS Builders Site)
KIS Cruiser in progress...Slow but steady progress....

"Ladies and Gentlemen, take my advice,
pull down your pants and Slide on the Ice!"
(M.A.S.H. Sidney Freedman)

In article , Big John
writes:


I've got a electric (110VAC) leaf blower. If you put a converter on
your dc and came out with 110VAC you could use the electric leaf
blower and not have to worry about the gas leaf blower having altitude
problems (reduced power output) G

Where theres a will, theres a way.

If the leaf blower don't give any engine boost, then it could be used
for pilot cooling on the hot muggy days like we have here in Houston
vs A/C in the bird.


Big John
Pilot, ROC Air Force



On that last one we are in total agreement. Now what is your solution for
removing some of the humidity from that air? I was working in the garage this
morning at 7am and it was so warm and humid that I was having problems with the
sweat pouring off my forehead and streaking my glasses as well as dripping on
the work.






Bob Reed
www.kisbuild.r-a-reed-assoc.com (KIS Builders Site)
KIS Cruiser in progress...Slow but steady progress....

"Ladies and Gentlemen, take my advice,
pull down your pants and Slide on the Ice!"
(M.A.S.H. Sidney Freedman)

On 08 Jul 2003 01:29:29 GMT, osit (RobertR237)
wrote:

In article , Ernest Christley
writes:

RobertR237 wrote:

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, they've told you already. They're going to put a turbo on the
blower. Sheesh! 8*)



OK, and they are going to power the turbo with what?

All the hot air from this NG.



Bob Reed
www.kisbuild.r-a-reed-assoc.com (KIS Builders Site)
KIS Cruiser in progress...Slow but steady progress....

"Ladies and Gentlemen, take my advice,
pull down your pants and Slide on the Ice!"
(M.A.S.H. Sidney Freedman)

--
dillon

The pen may be mightier than the sword,
but a .sig never beat a SIG

" 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