Re: amc20 torsen posi

[farna@xxxxxxx]

Actually, the geared hubs probably REQUIRE a 3.xx gear. IIRC there are only two gears in the hub, a ring gear that drives the wheel and a pinion on the axle. There may be some intermediate gears like a cam gear drive, I don't recall. But I don't think there is. I've seen a busted military HUMMER hub gear case, but that was nearly 10 years ago! Final reduction on those things is 5.xx, maybe close to 6.xx. 

On December 18, 2005 andrew hay wrote:

> i suppose it's fairly common knowledge here that the hummer [h1] has
> amc20 differentials, and also that they carry what is imho the best
> posi ever, the gleason torsen.  it does not work through friction and
> needs no special lube; instead, worm gears on the carrier drive the
> side gears.  it doesn't 'wear out' like conventional posis.
> 
> until now, i had thought that because of the axle-hub gear reducers
> they used only tall gears on the 2-series case, but according to this
> http://www.vibratesoftware.com/html_help/html/HUMMER/Hummer.htm
> they also offered 3.08 gears.  this might have a thick ring gear that
> goes on a 2-series diff, but it could also mean they have a 3-series
> amc20 case too!
> 
> jeeps had a 3.07 that went on the 3-series case.  i don't know of any
> other 3.07/3.08 for an amc20 2-series, which would make the hummer
> gears unique if they are.
> 
> btw if this doesn't sound high performance, indycars also run torsen
> diffs - exclusively.
> ________________________________________________________________________
> Andrew Hay                                  the genius nature
> internet rambler                            is to see what all have seen
> adh@xxxxxxxxxxxxxxxxx                       and think what none thought


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