Yep!

----- Original Message -----
From: David Marshall <mailinglist@fastforward.ca>
Date: Monday, September 19, 2005 10:12 am
Subject: RE: [Syncro] How do you tell if you have 4.86 or 5.43 differentials?

> So, logically speaking, if the van was on a hoist with the front
> differential locked, the drive shaft would then spin 4.86 times
> per wheel
> revolution?
>
> David Marshall
>
> Fast Forward Automotive Inc.
> 4356 Quesnel-Hixon Road
> Quesnel BC Canada  V2J 6Z3
>
> http://www.fastforward.ca    mailto:sales@fastforward.ca
> Phone: (250) 992 7775        FAX: (250) 992 1160
>
> - Vanagon Accessories and Engine Conversions
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> -----Original Message-----
> From: Syncro@yahoogroups.com [mailto:Syncro@yahoogroups.com]On
> Behalf Of
> dhaynes@optonline.net
> Sent: September 19, 2005 4:55 AM
> To: David Marshall
> Cc: Mailing List - Vanagon; Mailing List - Syncro
> Subject: Re: [Syncro] How do you tell if you have 4.86 or 5.43
> differentials?
>
>
> If one wheel is locked, the action of the differential will double
> the speed
> of the free wheel. This is why it can be dangerous to spin tires
> at speed
> such as when stuck in snow. With one wheel spinning, if the speedo
> says 50,
> the one tire is actually spinning at 100. Keep this in mind when
> spinningtires with a vehicle lifted. Any way, with only one axle
> turning, 2.4 turns
> =4.8 ratio. You got the 4.86 gears.
>
> Dennis
>
> ----- Original Message -----
> From: David Marshall <mailinglist@fastforward.ca>
> Date: Monday, September 19, 2005 1:55 am
> Subject: [Syncro] How do you tell if you have 4.86 or 5.43
> differentials?
> > Volks,
> > As a result of my transmission failure... not my month to say the
> > least but
> > hey... I need to install a new transmission in my camper.
> >
> > The tires are 215/85R16 - circa 30.3" tall
> >
> > With a GPS reading 100km/h, the tachometer says 3050 rpm in 4th
> >
> > The transmission is an AAN which is supposed to be 4.86:1 - same
> > as any
> > north American gearbox
> >
> > Both the transmission and front differential were rebuilt in 2000
> > in Germany
> > so who knows what has been done to them R+P wise.
> >
> > Plugging these numbers into a calculator, this should result in
> > (with a 0.85
> > 4th) 2840 rpm and not 3050.   If you put 5.43:1 in the
> calculator, it
> > results in almost 3200 RPM.
> >
> > So, I figured I could tell by putting the van in 2WD (via
> > decoupler) and
> > lifting a front wheel and count how many times the drive shaft
> > turns when
> > you turn the wheel once.   less that 5 means a 4.86 and more than
> > 5 is a
> > 5.43 right??? nope... I get about 2.4 turns of the drive shaft.
> > Now... in
> > my garage I have a 4.86:1 front diff... same test (hold one flange
> > whileturning the other) results in about 2.4 turns of the drive
> > shaft flange....
> > what gives?   Without lifting the vehicle totally off the ground
> > and locking
> > all differentials and giving the wheels a revolution by hand, how
> > are you
> > supposed to tell?
> >
> > The last thing I want to do is install my spare AAN in there and
> > have it
> > breaking because the front R+P doesn't match.
> > David Marshall
> >
> > Fast Forward Automotive Inc.
> > 4356 Quesnel-Hixon Road
> > Quesnel BC Canada  V2J 6Z3
> >
> > Internet: www.fastforward.ca   Email: sales@fastforward.ca
> > Phone: (250) 992 7775
> >
> > - Vanagon Engine Conversions and Accessories
> > - Vanagon, Transporter and Iltis Sales and Importation
> > - Electrical harness fabrication and customization
> >
> > Due to the large volume of email we receive,  PLEASE  include
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