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Re: [Healeys] OD in 2nd gear

To: "healeys@autox.team.net" <healeys@autox.team.net>
Subject: Re: [Healeys] OD in 2nd gear
From: Michael Salter <michaelsalter@gmail.com>
Date: Mon, 25 Jan 2021 16:33:09 -0500
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <25d73b68-a16d-2735-dca1-235263f0cdec@comcast.net> <305E1984-8A15-4176-B0F6-901CD5D6FDEC@schoerner.se> <e5efc9e6-9032-2a60-75b9-aa362a06f8eb@comcast.net>
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I'll be very interested to hear from you how well it actually works in
practice.
Many years ago I just jumpered the gear lever switch to see what a 2nd
overdrive would be like using the 3.9/1 ratio diff.
My conclusion was that with the really broad torque curve of the 3000 the
acceleration times were not improved and engaging 2nd overdrive at full
throttle seemed to be something that the overdrive didn't like too much.
M


On Mon, Jan 25, 2021 at 4:16 PM Bob Spidell <bspidell@comcast.net> wrote:

> There's a comparison table in the PDF.
>
> On 1/25/2021 1:13 PM, Per Schoerner wrote:
> > Wouldn=E2=80=99t second with overdrive be the same ratio, or very close=
 to, as
> third gear?
> >
> > Per
> >
> > Skickat fr=C3=A5n min iPhone
> >
> >> 25 jan. 2021 kl. 21:17 skrev Bob Spidell <bspidell@comcast.net>:
> >>
> >> =EF=BB=BFNice engineering! 2nd/OD would be great; I'm always over-revv=
ing in
> 2nd trying to get 'off the line' (note I have a 3.54 rear end).
> >>
> >>> On 1/24/2021 5:36 PM, Roger Grace wrote:
> >>> For interest, see enclosed my Winter project to install interlocks
> using proximity sensors to enable OD
>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:comic sa=
ns ms,sans-serif;font-size:small">I&#39;ll be very interested to hear from =
you how well it actually works in practice. <br></div><div class=3D"gmail_d=
efault" style=3D"font-family:comic sans ms,sans-serif;font-size:small">Many=
 years ago I just jumpered the gear lever switch to see what a 2nd overdriv=
e would be like using the 3.9/1 ratio diff.</div><div class=3D"gmail_defaul=
t" style=3D"font-family:comic sans ms,sans-serif;font-size:small">My conclu=
sion was that with the really broad torque curve of the 3000 the accelerati=
on times were not improved and engaging 2nd overdrive at full throttle seem=
ed to be something that the overdrive didn&#39;t like too much. <br></div><=
div class=3D"gmail_default" style=3D"font-family:comic sans ms,sans-serif;f=
ont-size:small">M<br></div><div class=3D"gmail_default" style=3D"font-famil=
y:comic sans ms,sans-serif;font-size:small"><br></div></div><br><div class=
=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Jan 25, 2021=
 at 4:16 PM Bob Spidell &lt;<a href=3D"mailto:bspidell@comcast.net";>bspidel=
l@comcast.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddi=
ng-left:1ex">There&#39;s a comparison table in the PDF.<br>
<br>
On 1/25/2021 1:13 PM, Per Schoerner wrote:<br>
&gt; Wouldn=E2=80=99t second with overdrive be the same ratio, or very clos=
e to, as third gear?<br>
&gt;<br>
&gt; Per<br>
&gt;<br>
&gt; Skickat fr=C3=A5n min iPhone<br>
&gt;<br>
&gt;&gt; 25 jan. 2021 kl. 21:17 skrev Bob Spidell &lt;<a href=3D"mailto:bsp=
idell@comcast.net" target=3D"_blank">bspidell@comcast.net</a>&gt;:<br>
&gt;&gt;<br>
&gt;&gt; =EF=BB=BFNice engineering! 2nd/OD would be great; I&#39;m always o=
ver-revving in 2nd trying to get &#39;off the line&#39; (note I have a 3.54=
 rear end).<br>
&gt;&gt;<br>
&gt;&gt;&gt; On 1/24/2021 5:36 PM, Roger Grace wrote:<br>
&gt;&gt;&gt; For interest, see enclosed my Winter project to install interl=
ocks using proximity sensors to enable OD<br>
<br>
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</blockquote></div>

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