Re: [Healeys] Overdrive ratios

[Hank Leach via Healeys <healeys@autox.team.net>]

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<div>Overdrives for AH 100 were installed as follows:</div>
<div>OD 1260 (32%) was used up to 140204 (not practical in use)</div>
<div>OD 1292 was used on chassis 140205-228046</div>
<div>OD 1308 started at 1 to 228046</div>
<div>OD 1447 was used on chassis =
(BN2) 228047-230489 (with some exceptions)</div>
<div>&nbsp;</div>
<div>Later cars, including BJ8 went to a 22% unit.</div>
<div><br>-------------------- <br><br>From: "Michael Salter" &lt;michael.=
salter@gmail.com&gt; <br>To: &lt;gradea1@charter.net&gt;, &lt;healeys@autox=
.team.net&gt; <br>Sent: July 15, 2026 at 9:35 AM PDT <br>Subject: Re: =
[Healeys] Overdrive ratios </div>
<div style=3D"font-family: Aptos, =
Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; =
font-size: 12pt; color: rgb(33, 33, 33);">Thanks Hank. Very much =
appreciated.&nbsp;</div>
<div style=3D"font-family: Aptos, =
Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; =
font-size: 12pt; color: rgb(33, 33, 33);">&nbsp;</div>
<div style=3D"font-family: Aptos, Aptos_MSFontService, -apple-system, =
Roboto, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(33, 33, =
33);">M</div>
<div id=3D"ms-outlook-mobile-body-separator-line" =
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 Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, =
sans-serif; font-size: 12pt;">&nbsp;</div>
</div>
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id=3D"ms-outlook-mobile-signature" style=3D"font-family: Aptos, =
Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; =
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<div style=3D"font-family: Aptos=
, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif;=
 font-size: 12pt; color: rgb(33, 33, 33);">&nbsp;</div>
</div>
<hr style=3D"display: inline-block; width: 98%;">
<div =
id=3D"divRplyFwdMsg"><strong>From:</strong> Hank Leach &lt;gradea1@charter.=
net&gt;<br><strong>Sent:</strong> Wednesday, 15 July 2026 =
12:33:04<br><strong>To:</strong> Michael Salter &lt;michael.salter@gmail.=
com&gt;; healeys@autox.team.net &lt;healeys@autox.team.=
net&gt;<br><strong>Subject:</strong> RE: [Healeys] Overdrive ratios
<div>&nbsp;</div>
</div>
<div>
<div>Michael- the 1260 is the early 32% OD. =
The 1292 is the 100 common 28% ratio. After that ODs for BN2s were 1308-28%=
 and 1447-28%.</div>
<div>&nbsp;</div>
<div>I actually have an OD case #105=
 but 288 is a low serial number. Regards, Hank<br>-------------------- =
<br><br>From: "Michael Salter" &lt;michael.salter@gmail.com&gt; <br>To: =
&lt;healeys@autox.team.net&gt; <br>Sent: July 15, 2026 at 9:22 AM PDT =
<br>Subject: [Healeys] Overdrive ratios</div>
<div style=3D"font-family: =
Aptos,Aptos_MSFontService,-apple-system,Roboto,Arial,Helvetica,sans-serif; =
font-size: 12pt; color: rgb(33,33,33);">I have 2 BN1 overdrives which I'm =
struggling to identify.</div>
<div style=3D"font-family: Aptos,=
Aptos_MSFontService,-apple-system,Roboto,Arial,Helvetica,sans-serif; =
font-size: 12pt; color: rgb(33,33,33);">Unlike the later type "A" units the=
 serial number on these is not prefixed with the ratio.</div>
<div style=3D"font-family: Aptos,Aptos_MSFontService,-apple-system,Roboto,=
Arial,Helvetica,sans-serif; font-size: 12pt; color: rgb(33,33,33);">The =
serial numbers on these are :</div>
<div style=3D"font-family: Aptos,=
Aptos_MSFontService,-apple-system,Roboto,Arial,Helvetica,sans-serif; =
font-size: 12pt; color: rgb(33,33,33);">1260/288</div>
<div style=3D"font-family: Aptos,Aptos_MSFontService,-apple-system,Roboto,=
Arial,Helvetica,sans-serif; font-size: 12pt; color: rgb(33,33,=
33);">and</div>
<div style=3D"font-family: Aptos,Aptos_MSFontService,=
-apple-system,Roboto,Arial,Helvetica,sans-serif; font-size: 12pt; color: =
rgb(33,33,33);">1292/2037</div>
<div style=3D"font-family: Aptos,=
Aptos_MSFontService,-apple-system,Roboto,Arial,Helvetica,sans-serif; =
font-size: 12pt; color: rgb(33,33,33);">Anyone with information which would=
 help identify the ratios of these?</div>
<div style=3D"font-family: Aptos,=
Aptos_MSFontService,-apple-system,Roboto,Arial,Helvetica,sans-serif; =
font-size: 12pt; color: rgb(33,33,33);">Thanks.</div>
<div id=3D"x_ms-outlook-mobile-body-separator-line" style=3D"font-family: =
Aptos,Aptos_MSFontService,-apple-system,Roboto,Arial,Helvetica,sans-serif; =
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<div style=3D"font-family: Aptos,Aptos_MSFontService,=
-apple-system,Roboto,Arial,Helvetica,sans-serif; font-size: =
12pt;">&nbsp;</div>
</div>
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style=3D"font-family: Aptos,Aptos_MSFontService,-apple-system,Roboto,Arial,=
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<div style=3D"font-family: Aptos,Aptos_MSFontService,-apple-system,Roboto,=
Arial,Helvetica,sans-serif; font-size: 12pt; color: rgb(33,33,=
33);">&nbsp;</div>
</div>
<div>&nbsp;</div>
</div>

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