RE: <MISC> Overdrive

[Thi VanAusdal <tvanausdal@xxxxxxxxxxxxx>]

Yes, as far as I know, it is defined as a ratio of less than 1:1.  

No physical differences that I've ever heard about in the gears
themselves - some transmissions have an extra layshaft for
that top gear but it's a layout issue, not a definition issue.

  - thi v.


> -----Original Message-----
> From: Boyd, David (Neighbour Boy) [mailto:boydd@domain.elided]
> Sent: Friday, October 16, 1998 3:49 PM
> To: 'bmw@domain.elided'
> Subject: <MISC> Overdrive
> 
> 
> This brings up a question that I've always had.  What constitutes an
> overdrive gear.  I always assumed it meant a ratio of less that 1:1.
> Kinda like .80:1 with my 5th gear.  Is that all it is, or are 
> the gears
> actually physically different?  Hope it's not too off topic.
> 
> --David Boyd, boydd@domain.elided
> '84 325e 200k
> BMW CCA
> BMW ACA
> 
> > ----------
> > From: 	Adrian McEwen[SMTP:amcewen@domain.elided]
> > Reply To: 	amcewen@domain.elided
> > Sent: 	Friday, October 16, 1998 1:15 AM
> > To: 	bmw-digest@domain.elided
> > Subject: 	Re: E30 M3 questions
> > 
> IIRC the American spec M3 has a different gearbox than the Euro spec
> models
> 	where fifth is an overdrive rather than another "proper" gear
> 

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