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That should be added to the concours guidelines!
On Wed, Jul 15, 2026 at 8:46=E2=80=AFPM Harold Manifold <manifold@telus.net=
> wrote:
> Hi Michael,
>
> I have attached a document from my archives regarding this topic. I
> believe the information in it agrees with Hank's previous comments.
>
> Best regards,
> Harold
>
> On Wed, Jul 15, 2026 at 4:17=E2=80=AFPM Robert Markovich via Healeys <
> healeys@autox.team.net> wrote:
>
>> I thought they did use a .77 overdrive on the 100/6 as on the 100
>> BN2, but lessened it to a .82 (or so) unit on the 3000s. Along with a re=
ar
>> gear switch from 4.10:1 to 3.90:1.
>>
>>
>> Sent from the all new AOL app for iOS
>> <https://aolapp.onelink.me/eG2g?pid=3DNativePlacement&c=3DUS_Acquisition=
_YMktg_320_EmailSignature_AttributionDL&af_sub1=3DAcquisition&af_sub2=3DUS_=
YMktg&af_sub3=3D&af_sub4=3D100002473&af_sub5=3DSentFromNewAOLApp__Interstit=
ial_&af_ios_store_cpp=3Dce85ce34-ad0f-4811-a92b-a172743b064e&af_android_url=
=3Dhttps%3A%2F%2Fplay.google.com%2Fstore%2Fapps%2Fdetails%3Fid%3Dcom.aol.mo=
bile.aolapp%26listing%3Demail_signature_attribution>
>>
>> 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
>> the 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 =
<
>> healeys@autox.team.net>
>> *Subject:* RE: Re: [Healeys] Overdrive ratios
>>
>> Overdrives 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 140205-228046
>> OD 1308 started at 1 to 228046
>> OD 1447 was used on chassis (BN2) 228047-230489 (with some exceptions)
>>
>> Later cars, including BJ8 went to a 22% unit.
>>
>> --------------------
>>
>> From: "Michael Salter" <michael.salter@gmail.com>
>> To: <gradea1@charter.net>, <healeys@autox.team.net>
>> Sent: July 15, 2026 at 9:35 AM PDT
>> Subject: Re: [Healeys] Overdrive ratios
>> Thanks Hank. Very much appreciated.
>>
>> M
>>
>>
>> ------------------------------
>> *From:* Hank Leach <gradea1@charter.net>
>> *Sent:* Wednesday, 15 July 2026 12:33:04
>> *To:* Michael Salter <michael.salter@gmail.com>; healeys@autox.team.net =
<
>> healeys@autox.team.net>
>> *Subject:* RE: [Healeys] Overdrive ratios
>>
>> 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%.
>>
>> I actually have an OD case #105 but 288 is a low serial number. Regards,
>> Hank
>> --------------------
>>
>> From: "Michael Salter" <michael.salter@gmail.com>
>> To: <healeys@autox.team.net>
>> Sent: July 15, 2026 at 9:22 AM PDT
>> Subject: [Healeys] Overdrive ratios
>> I have 2 BN1 overdrives which I'm struggling 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 :
>> 1260/288
>> and
>> 1292/2037
>> Anyone with information which would help identify the ratios of these?
>> Thanks.
>>
>>
>>
>> _______________________________________________
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>> Archive: http://www.team.net/pipermail/healeys
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>> http://autox.team.net/mailman/listinfo/healeys
>>
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>>
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>>
>> Archive: http://www.team.net/pipermail/healeys
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>>
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<div dir=3D"ltr">That should be added to the concours guidelines!</div><br>=
<div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" class=3D"=
gmail_attr">On Wed, Jul 15, 2026 at 8:46=E2=80=AFPM Harold Manifold <<a =
href=3D"mailto:manifold@telus.net";>manifold@telus.net</a>> wrote:<br></d=
iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div>=
Hi Michael,</div><div><br></div><div>I have attached a document from my arc=
hives regarding this topic. I believe the information in it agrees with Han=
k's previous comments.</div><div><br></div><div>Best regards,</div><div=
>Harold</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D=
"gmail_attr">On Wed, Jul 15, 2026 at 4:17=E2=80=AFPM Robert Markovich via H=
ealeys <<a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank">heal=
eys@autox.team.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote=
" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);=
padding-left:1ex"><div>
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<br><br><br><div><a style=3D"font-siz=
e:12px" href=3D"https://aolapp.onelink.me/eG2g?pid=3DNativePlacement&c=
=3DUS_Acquisition_YMktg_320_EmailSignature_AttributionDL&af_sub1=3DAcqu=
isition&af_sub2=3DUS_YMktg&af_sub3=3D&af_sub4=3D100002473&a=
f_sub5=3DSentFromNewAOLApp__Interstitial_&af_ios_store_cpp=3Dce85ce34-a=
d0f-4811-a92b-a172743b064e&af_android_url=3Dhttps%3A%2F%2Fplay.google.c=
om%2Fstore%2Fapps%2Fdetails%3Fid%3Dcom.aol.mobile.aolapp%26listing%3Demail_=
signature_attribution" target=3D"_blank">Sent from the all new AOL app for =
iOS</a><br></div><br><p style=3D"font-size:15px;color:rgb(132,115,255);padd=
ing-top:15px;margin-top:0px">On Wednesday, July 15, 2026, 2:29 PM, Michael =
Salter <<a href=3D"mailto:michael.salter@gmail.com"; target=3D"_blank">mi=
chael.salter@gmail.com</a>> wrote:</p><blockquote><div id=3D"m_677846258=
3151383250m_5110328383115318872yiv9028873196"><div>
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;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,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
<br clear=3D"none">
</div>
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
M</div>
<div id=3D"m_6778462583151383250m_5110328383115318872yiv9028873196ms-outloo=
k-mobile-body-separator-line" style=3D"font-family:Aptos,-apple-system,Robo=
to,Arial,Helvetica,sans-serif;font-size:12pt">
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt">
<br clear=3D"none">
</div>
</div>
<div id=3D"m_6778462583151383250m_5110328383115318872yiv9028873196ms-outloo=
k-mobile-signature" style=3D"font-family:Aptos,-apple-system,Roboto,Arial,H=
elvetica,sans-serif;font-size:12pt;color:rgb(33,33,33)">
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
<br clear=3D"none">
</div>
</div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"m_6778462583151383250m_5110328383115318872yiv9028873196yqt05627"=
><div dir=3D"ltr" id=3D"m_6778462583151383250m_5110328383115318872yiv902887=
3196divRplyFwdMsg"><b>From:</b> Hank Leach <<a href=3D"mailto:gradea1@ch=
arter.net" target=3D"_blank">gradea1@charter.net</a>><br clear=3D"none">
<b>Sent:</b> Wednesday, 15 July 2026 13:47:08<br clear=3D"none">
<b>To:</b> Michael Salter <<a href=3D"mailto:michael.salter@gmail.com"; t=
arget=3D"_blank">michael.salter@gmail.com</a>>; <a href=3D"mailto:healey=
s@autox.team.net" target=3D"_blank">healeys@autox.team.net</a> <<a href=
=3D"mailto:healeys@autox.team.net"; target=3D"_blank">healeys@autox.team.net=
</a>><br clear=3D"none">
<b>Subject:</b> RE: Re: [Healeys] Overdrive ratios
<div>=C2=A0</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>=C2=A0</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" <<a href=3D"mailto:michael.salter@gmail=
.com" target=3D"_blank">michael.salter@gmail.com</a>> <br clear=3D"none"=
>
To: <<a href=3D"mailto:gradea1@charter.net"; target=3D"_blank">gradea1@ch=
arter.net</a>>, <<a href=3D"mailto:healeys@autox.team.net"; target=3D"=
_blank">healeys@autox.team.net</a>> <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,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
Thanks Hank. Very much appreciated.=C2=A0</div>
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
=C2=A0</div>
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
M</div>
<div id=3D"m_6778462583151383250m_5110328383115318872yiv9028873196x_ms-outl=
ook-mobile-body-separator-line" style=3D"font-family:Aptos,-apple-system,Ro=
boto,Arial,Helvetica,sans-serif;font-size:12pt">
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt">
=C2=A0</div>
</div>
<div id=3D"m_6778462583151383250m_5110328383115318872yiv9028873196x_ms-outl=
ook-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,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
=C2=A0</div>
</div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"m_6778462583151383250m_5110328383115318872yiv9028873196x_divRply=
FwdMsg"><strong>From:</strong> Hank Leach <<a href=3D"mailto:gradea1@cha=
rter.net" target=3D"_blank">gradea1@charter.net</a>><br clear=3D"none">
<strong>Sent:</strong> Wednesday, 15 July 2026 12:33:04<br clear=3D"none">
<strong>To:</strong> Michael Salter <<a href=3D"mailto:michael.salter@gm=
ail.com" target=3D"_blank">michael.salter@gmail.com</a>>; <a href=3D"mai=
lto:healeys@autox.team.net" target=3D"_blank">healeys@autox.team.net</a> &l=
t;<a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank">healeys@autox=
.team.net</a>><br clear=3D"none">
<strong>Subject:</strong> RE: [Healeys] Overdrive ratios
<div>=C2=A0</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>=C2=A0</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" <<a href=3D"mailto:michael.salter@gmail=
.com" target=3D"_blank">michael.salter@gmail.com</a>> <br clear=3D"none"=
>
To: <<a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank">healeys=
@autox.team.net</a>> <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,sans-s=
erif;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,sans-s=
erif;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,sans-s=
erif;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,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
1260/288</div>
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
and</div>
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
1292/2037</div>
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;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,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
Thanks.</div>
<div id=3D"m_6778462583151383250m_5110328383115318872yiv9028873196x_x_ms-ou=
tlook-mobile-body-separator-line" style=3D"font-family:Aptos,-apple-system,=
Roboto,Arial,Helvetica,sans-serif;font-size:12pt">
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt">
=C2=A0</div>
</div>
<div id=3D"m_6778462583151383250m_5110328383115318872yiv9028873196x_x_ms-ou=
tlook-mobile-signature" style=3D"font-family:Aptos,-apple-system,Roboto,Ari=
al,Helvetica,sans-serif;font-size:12pt;color:rgb(33,33,33)">
<div style=3D"font-family:Aptos,-apple-system,Roboto,Arial,Helvetica,sans-s=
erif;font-size:12pt;color:rgb(33,33,33)">
=C2=A0</div>
</div>
<div>=C2=A0</div>
</div>
</div></div>
</div></div><div id=3D"m_6778462583151383250m_5110328383115318872yqt79790">=
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