I get a headache just thinking about how to do
that in SolidWorks!!

  Scott Carroll

Actually its pretty easy, I did one.. and was
going to send the file to Paul but it was 1.9mb
and I didn't want to tie up his bandwidth..
There's actually several ways to do it, as
well..
you could make it in the proper form [ not a
linear expansion but rather a parabolic shape..
or is
that hyperbolic] either way... its very doable..
I did a simple linear one in about 2-3 minutes..
mind you
I already had the prop model..

Jarrett

Send away Jarrett.

Paul Lamar ...No rotor no motor.

Here ya go Paul, my gift to you.. :-)

I took the time to go back and give it the proper
divergent "look" of which
a prop's airflow "goes".. at least thats the way I
remember it's supposed to.

Jarrett

Did you mean to send an igs? What do I do with it? :)

OK I loaded it into Rhino and rendered it.
Here it is. Good work Jarrett

Paul Lamar ...No rotor no motor.

Yup.. I didn't have no use for it.. so figured I
might as well send it
to you. Then you can do what ya want w/ it.  :-)
I just get a kick outa
pushing my limits w/ the program.. It's not every
day I get to
do a parabolic helix w/ a continuous spiral
following the helix  :-)

Glad you liked it..

Jarrett

I'll have to take a closer look at Rhino and see
if I can change the first and last radius of the helix.
Then you are in trouble :)

BTW that igs file, when converted to a Rhino file, was
39 meg :)