healeys
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Re: [Healeys] Overdrive ratios

To: Michael Salter <michael.salter@gmail.com>, "gradea1@charter.net" <gradea1@charter.net>, "healeys@autox.team.net" <healeys@autox.team.net>
Subject: Re: [Healeys] Overdrive ratios
From: Robert Markovich via Healeys <healeys@autox.team.net>
Date: Wed, 15 Jul 2026 23:10:45 +0000 (UTC)
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Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <1f108b93-9836-8201-691f-6f462d0e1a59@charter.net> <BY5PR04MB6931A2F726752AB1866EFC5CA1F82@BY5PR04MB6931.namprd04.prod.outlook.com>
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I thought they did use a .77 overdrive on the 100/6 as on the 100 BN2,=C2=
=A0but lessened it to a .82 (or so) unit on the 3000s. Along with a rear ge=
ar switch from 4.10:1 to 3.90:1.=C2=A0


Sent from the all new AOL app for iOS


On Wednesday, July 15, 2026, 2:29 PM, Michael Salter <michael.salter@gmail.=
com> wrote:

As I recall Hank the 100/6 also used the 28% overdrive, the same unit as th=
e BN2.
M

From: Hank Leach <gradea1@charter.net>
Sent: Wednesday, 15 July 2026 13:47:08
To: Michael Salter <michael.salter@gmail.com>; healeys@autox.team.net <heal=
eys@autox.team.net>
Subject: RE: Re: [Healeys] Overdrive ratios=C2=A0Overdrives for AH 100 were=
 installed as follows:OD 1260 (32%) was used up to 140204 (not practical in=
 use)OD 1292 was used on chassis 140205-228046OD 1308 started at 1 to 22804=
6OD 1447 was used on chassis (BN2) 228047-230489 (with some exceptions)=C2=
=A0Later cars, including BJ8 went to a 22% unit.
--------------------=20

From: "Michael Salter" <michael.salter@gmail.com>=20
To: <gradea1@charter.net>, <healeys@autox.team.net>=20
Sent: July 15, 2026 at 9:35 AM PDT=20
Subject: Re: [Healeys] Overdrive ratios Thanks Hank. Very much appreciated.=
=C2=A0=C2=A0M=C2=A0=C2=A0From: Hank Leach <gradea1@charter.net>
Sent: Wednesday, 15 July 2026 12:33:04
To: Michael Salter <michael.salter@gmail.com>; healeys@autox.team.net <heal=
eys@autox.team.net>
Subject: RE: [Healeys] Overdrive ratios=C2=A0Michael- 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%.=C2=A0I actually have an OD case #105 but 288 is a l=
ow serial number. Regards, Hank
--------------------=20

From: "Michael Salter" <michael.salter@gmail.com>=20
To: <healeys@autox.team.net>=20
Sent: July 15, 2026 at 9:22 AM PDT=20
Subject: [Healeys] Overdrive ratiosI have 2 BN1 overdrives which I'm strugg=
ling to identify.Unlike the later type "A" units the serial number on these=
 is not prefixed with the ratio.The serial numbers on these are :1260/288an=
d1292/2037Anyone with information which would help identify the ratios of t=
hese?Thanks.=C2=A0=C2=A0=C2=A0_____________________________________________=
__

Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archiv=
e/healeys

Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys

h@aol.com





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<html xmlns=3D"http://www.w3.org/1999/xhtml"; xmlns:v=3D"urn:schemas-microso=
ft-com:vml" xmlns:o=3D"urn:schemas-microsoft-com:office:office"><head><!--[=
if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>=
96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><bo=
dy>
I thought they did use a .77 overdrive on the 100/6 as on the 100 BN2,&nbsp=
;but lessened it to a .82 (or so) unit on the 3000s. Along with a rear gear=
 switch from 4.10:1 to 3.90:1.&nbsp;<br><br><br><div class=3D"yahoo-signatu=
re"><a style=3D"font-size:12px" href=3D"https://aolapp.onelink.me/eG2g?pid=
=3DNativePlacement&amp;c=3DUS_Acquisition_YMktg_320_EmailSignature_Attribut=
ionDL&amp;af_sub1=3DAcquisition&amp;af_sub2=3DUS_YMktg&amp;af_sub3=3D&amp;a=
f_sub4=3D100002473&amp;af_sub5=3DSentFromNewAOLApp__Interstitial_&amp;af_io=
s_store_cpp=3Dce85ce34-ad0f-4811-a92b-a172743b064e&amp;af_android_url=3Dhtt=
ps%3A%2F%2Fplay.google.com%2Fstore%2Fapps%2Fdetails%3Fid%3Dcom.aol.mobile.a=
olapp%26listing%3Demail_signature_attribution">Sent from the all new AOL ap=
p for iOS</a><br></div><br><p class=3D"yahoo-quoted-begin" style=3D"font-si=
ze: 15px; color: rgb(132, 115, 255); padding-top: 15px; margin-top: 0px;">O=
n Wednesday, July 15, 2026, 2:29 PM, Michael Salter &lt;michael.salter@gmai=
l.com&gt; wrote:</p><blockquote class=3D"iosymail"><div id=3D"yiv9028873196=
"><div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33, 33, 33);">
As I recall Hank the 100/6 also used the 28% overdrive, the same unit as th=
e BN2.</div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33, 33, 33);">
<br clear=3D"none">
</div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33, 33, 33);">
M</div>
<div id=3D"yiv9028873196ms-outlook-mobile-body-separator-line" style=3D"fon=
t-family:Aptos, -apple-system, Roboto, Arial, Helvetica, sans-serif;font-si=
ze:12pt;">
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;">
<br clear=3D"none">
</div>
</div>
<div id=3D"yiv9028873196ms-outlook-mobile-signature" style=3D"font-family:A=
ptos, -apple-system, Roboto, Arial, Helvetica, sans-serif;font-size:12pt;co=
lor:rgb(33, 33, 33);">
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33, 33, 33);">
<br clear=3D"none">
</div>
</div>
<hr style=3D"display:inline-block;width:98%;" tabindex=3D"-1">
<div id=3D"yiv9028873196yqt05627" class=3D"yiv9028873196yqt8348846316"><div=
 dir=3D"ltr" id=3D"yiv9028873196divRplyFwdMsg"><b>From:</b> Hank Leach &lt;=
gradea1@charter.net&gt;<br clear=3D"none">
<b>Sent:</b> Wednesday, 15 July 2026 13:47:08<br clear=3D"none">
<b>To:</b> Michael Salter &lt;michael.salter@gmail.com&gt;; healeys@autox.t=
eam.net &lt;healeys@autox.team.net&gt;<br clear=3D"none">
<b>Subject:</b> RE: Re: [Healeys] Overdrive ratios
<div>&nbsp;</div>
</div>
<div>
<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 clear=3D"none">
-------------------- <br clear=3D"none">
<br clear=3D"none">
From: "Michael Salter" &lt;michael.salter@gmail.com&gt; <br clear=3D"none">
To: &lt;gradea1@charter.net&gt;, &lt;healeys@autox.team.net&gt; <br clear=
=3D"none">
Sent: July 15, 2026 at 9:35 AM PDT <br clear=3D"none">
Subject: Re: [Healeys] Overdrive ratios </div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
Thanks Hank. Very much appreciated.&nbsp;</div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
&nbsp;</div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
M</div>
<div id=3D"yiv9028873196x_ms-outlook-mobile-body-separator-line" style=3D"f=
ont-family:Aptos, -apple-system, Roboto, Arial, Helvetica, sans-serif;font-=
size:12pt;">
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;">
&nbsp;</div>
</div>
<div id=3D"yiv9028873196x_ms-outlook-mobile-signature" style=3D"font-family=
:Aptos, -apple-system, Roboto, Arial, Helvetica, sans-serif;font-size:12pt;=
color:rgb(33,33,33);">
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
&nbsp;</div>
</div>
<hr style=3D"display:inline-block;width:98%;">
<div id=3D"yiv9028873196x_divRplyFwdMsg"><strong>From:</strong> Hank Leach =
&lt;gradea1@charter.net&gt;<br clear=3D"none">
<strong>Sent:</strong> Wednesday, 15 July 2026 12:33:04<br clear=3D"none">
<strong>To:</strong> Michael Salter &lt;michael.salter@gmail.com&gt;; heale=
ys@autox.team.net &lt;healeys@autox.team.net&gt;<br clear=3D"none">
<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. Regard=
s, Hank<br clear=3D"none">
-------------------- <br clear=3D"none">
<br clear=3D"none">
From: "Michael Salter" &lt;michael.salter@gmail.com&gt; <br clear=3D"none">
To: &lt;healeys@autox.team.net&gt; <br clear=3D"none">
Sent: July 15, 2026 at 9:22 AM PDT <br clear=3D"none">
Subject: [Healeys] Overdrive ratios</div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-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, -apple-system, Roboto, Arial, Helvetica, s=
ans-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, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
The serial numbers on these are :</div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
1260/288</div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
and</div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
1292/2037</div>
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-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, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
Thanks.</div>
<div id=3D"yiv9028873196x_x_ms-outlook-mobile-body-separator-line" style=3D=
"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, sans-serif;fon=
t-size:12pt;">
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;">
&nbsp;</div>
</div>
<div id=3D"yiv9028873196x_x_ms-outlook-mobile-signature" style=3D"font-fami=
ly:Aptos, -apple-system, Roboto, Arial, Helvetica, sans-serif;font-size:12p=
t;color:rgb(33,33,33);">
<div style=3D"font-family:Aptos, -apple-system, Roboto, Arial, Helvetica, s=
ans-serif;font-size:12pt;color:rgb(33,33,33);">
&nbsp;</div>
</div>
<div>&nbsp;</div>
</div>
</div></div>
</div></div><div class=3D"yqt8348846316" id=3D"yqt79790">__________________=
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