Re: [CAD_CAM_EDM_DRO] RE: Cam track help!

John,

I do not know where on the cycle your spreadsheet starts. All I can tell
you is that the formula for a 2 period sine wave with a specific amplitude
is not open for interpretation, so that part of the equation must be
identical between my method and the method in your resource.

Since I have no idea where your resource has set his origin, then we will
forever be comparing apples to oranges. Since the numbers you have provided
are not referenced to a formula, it will not be possible for me to reconcile
the differences. I however, have 100% confidence in my calculated values.

I do not have time today to figure out the formula for your numbers, but I
may have time in the next several. Hope this helps somewhat.

Daniel J. Statman, Statman Designs
www.statmandesigns.com

----- Original Message -----
From: "j.guenther" <j.guenther@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, August 21, 2002 2:26 PM
Subject: RE: [CAD_CAM_EDM_DRO] RE: Cam track help!


> The full wave height is 0.680 which is the stroke of the Cam-Axial engine.
> I changed the amplitude value to 0.34 which gave me a first value of
> 0.005933818 verses 0.000207119 calculated by Brayton Paul in the original
> design. The other thing I just noticed is that the entire table provided
in
> the original design is positive numbers meaning the entire sine wave
ranges
> between 0.0 and +0.680. I suppose it really doesn't matter as long as the
> sine waves are pretty close in shape so that the piston will travel
> correctly.
>
> This does make for a interesting engine, this brings a whole new
definition
> to the term two stroke. This thing will produce two power pulses per
> revolution of the crank shaft since the sine wave has two peaks and two
> valley's per 360 degrees of rotation.
>
> John
>