Hello Paul,

 I've been proselytizing an a&p friend extolling the virtues of my
 13b.  He is curious about application in a helicopter.  Several
 helicopters use a horizontal engine with belts and pulleys to power
 the roters.  The engine output rpm needs to be 3000 to 3200.
 Horsepower should be 200 or better.  Can a fuel injected 13b
 generate that much hp at 3000 rpm or am I even asking the right
 question. Is this really a torque question?

 Your thoughts?

 William Hagood
 LexAmi
 Supporting Excellent Teaching
 Sent via I-Phone

 The rotary is not a high torque engine. It must be geared down and
 it must be
 run at 7500 RPM to get 250 HP. However many people are hung up on the
 idea of high RPM. Just think of the rotary as you would a turbine or
 electric
 motor. RPM is not a bad thing in a rotary until you get over 10,000
 RPM and in
 that case it is just like a turbine or an electric motor of the same
 size and HP. An electric motor will also throw off its copper windings
 at high RPM.

 Paul Lamar



I know of a couple of successful Hughes TH-55 / 269A helicopter
conversions to the Mazda 13B. One was recently sold on ebay for $26,000
and it obviously worked well according to the seller and the photos. I
can still see the photos since I saved it on my ebay watch page, but it
will disappear soon and I think ebay photos will not download. The
conversion was very neat and clean looking. I wish the guy would publish
plans and details. I also talked to guy that had one several years ago.
Obviously the reduction from engine rpm to drive the helicopter had to
be worked out, but since the Hughes uses a multi V-belt reduction this
is not a major issue.

John McEverett

John, use the screen capture mode in Windows to capture
e-bay photo's. Press the prt sc key on the upper right side
of the key board. That puts the picture in the hidden clip board
file. Than load MS Paint. Then select "paste and the clip board picture
will appear in MS Paint. Then name and save the file as a jpg.

I have not tested it with free paint programs other than
MS Paint but I suspect it will also work. If somebody on here
has I would appreciate the name of the free paint program
that works.

In Linux it is a lot easier as you click on a free screen capture
program that saves the file directly as a .png which works
like a jpg for the most part.

In a Mac here is how you do it.
Look at the attached jpg.


Paul Lamar


Paul, To save an E-bay picture or pretty much any. picture with windows
just right click on it and select save picture as. It will go to windows
explorer and then click save. You can change the storage location but
default is "pictures"  You showed me how to do this two years ago.

george grimes

Unfortunately that does not always work.
There apparently are some html tricks that people
are using to defeat that process.

The screen shot way so far always works as it is
internal to the computer and not dependent on
an html program.

Paul Lamar