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Date: Mon, 15 Jun 2009 15:42:47 -0700
Message-ID: <1ab24f410906151542te53cf08vf4581d665cc3f2fb@mail.gmail.com>
Subject: Not developing full power
From: Lynn Hanover <lehanover@gmail.com>
To: flyrotary@lancaironline.net
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It is not at all uncommon to find best power short of full throttle.

A number of factors may be involved. There may be an imperfection in the
manifolding that can be masked by turbulence generated by the throttle
plates.

Poorly radiused runners may be assisted in turning the flow by a less than
vertical plate.

Poor atomization may be improved by high velocity flow around the plate when
angled, and then return when the plate is vertical. (going from rich to
lean)

Dyno with the carb or throttle body facing both ways, so as to get all of
the free power.

On my Fiat engines full throttle was 4 HP less than about 95%.

Lynn E. Hanover

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<div>It is not at all uncommon to find best power short of full throttle. <=
/div>
<div>=A0</div>
<div>A number of factors may be involved. There may be an imperfection in t=
he manifolding that can be masked by turbulence generated by the throttle p=
lates. </div>
<div>=A0</div>
<div>Poorly radiused runners may be assisted in turning the flow by a less =
than vertical plate.</div>
<div>=A0</div>
<div>Poor atomization may be improved by high velocity flow around the plat=
e when angled, and then return when the plate is vertical. (going from rich=
 to lean)</div>
<div>=A0</div>
<div>Dyno with the carb or throttle body facing both ways, so as to get all=
 of the free power.</div>
<div>=A0</div>
<div>On my Fiat engines full throttle was 4 HP less than about 95%. </div>
<div>=A0</div>
<div>Lynn E. Hanover</div>

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