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The numbers for Erson/BFE #24 mentioned by David and Henry is the last
one in my list and has the longest duration. Like Henry said, if you
drop below 4,000 your dead.
I got interested in the history of cam design. According the Speedy Bill
Smith (Speedway Motors) the real innovators after WWII were Ed Winfield
and Collins of Harmon-Collins (see the book "Souping the Stock Engine).
He said their designs were heavily copied by the others. I think Kas's
cams were designed by someone from Harmon-Collins.
I certainly don't have the experience of many others on this list, but
I'll contribute a few comments on what Rick has said. Cams is a subject
that is mysterious (Rick said "black art") to many, so it is easy for
them to be fooled. There is nothing mysterious about it. I agree that
most people put to much emphasis on peak HP rather than the entire range
you will operate in.
 - Larry
On 1/22/2023 6:46 AM, David Gott via Fot wrote:
> Hi FOT,
>
> I used Larry Youngâ??s site to learn a lot about cams and their relative
> effects on engine performance with some crude engine modeling
> software, in the quest to pick the right cam for my wants, building a
> strong mid range engine, trying not to spin over 6,000 if I can help
> it with a stock based crank. Â Â Does anyone happen to have the specs
> on the Gillanderâ??s #24 they could share? Â Just curious. Â Maybe itâ??s at
> the pointy end of the list below?
>
> Rick McCurdy, hereâ??s the cam reference list Larry put together, below,
> and Iâ??d sure be curious what Rick Parentâ??s software would say I should
> have done!!!
>
> Triumph Cams <https://www.tildentechnologies.com/Cams/TriumphCams.html>
>
>
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The numbers for Erson/BFE #24 mentioned by David and Henry is the
last one in my list and has the longest duration. Like Henry said,
if you drop below 4,000 your dead.<br>
<br>
I got interested in the history of cam design. According the Speedy
Bill Smith (Speedway Motors) the real innovators after WWII were Ed
Winfield and Collins of Harmon-Collins (see the book "Souping the
Stock Engine). He said their designs were heavily copied by the
others. I think Kas's cams were designed by someone from
Harmon-Collins.<br>
<br>
I certainly don't have the experience of many others on this list,
but I'll contribute a few comments on what Rick has said. Cams is a
subject that is mysterious (Rick said "black art") to many, so it is
easy for them to be fooled. There is nothing mysterious about it. I
agree that most people put to much emphasis on peak HP rather than
the entire range you will operate in.<br>
 - Larry <br>
<br>
<br>
On 1/22/2023 6:46 AM, David Gott via Fot wrote:<br>
<blockquote type="cite"
cite="mid:1681050315.254591.1674391564068@mail.yahoo.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--[if gte mso
9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]-->
Hi FOT,
<div><br>
</div>
<div>I used Larry Youngâ??s site to learn a lot about cams and their
relative effects on engine performance with some crude engine
modeling software, in the quest to pick the right cam for my
wants, building a strong mid range engine, trying not to spin
over 6,000 if I can help it with a stock based crank. Â Â Does
anyone happen to have the specs on the Gillanderâ??s #24 they
could share? Â Just curious. Â Maybe itâ??s at the pointy end of the
list below?</div>
<div><br>
</div>
<div>Rick McCurdy, hereâ??s the cam reference list Larry put
together, below, and Iâ??d sure be curious what Rick Parentâ??s
software would say I should have done!!! Â </div>
<div><br>
</div>
<div><a
href="https://www.tildentechnologies.com/Cams/TriumphCams.html";
target="_blank"
class="enhancr2_B610E089-AE3E-4B7D-8313-E7FFEE78E531"
moz-do-not-send="true">Triumph Cams</a>Â </div>
<div><br>
</div>
<br>
</blockquote>
<br>
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