RE: Jetta Hybrid Conert?

["Roger Stockton" <rstockton@delta-q.com>]

> -----Original Message-----
> From: owner-ev@listproc.sjsu.edu 
> [mailto:owner-ev@listproc.sjsu.edu] On Behalf Of VanDerWal, Peter
> Sent: October 31, 2001 2:49 PM
> To: 'EV List'
> Subject: Re: Jetta Hybrid Conert?
> 
> 
> > Why would you need a transmission on the rear electric 
> drive? If the 
> > final output from a transmission is 1:1 to the drive shaft,
> 
> Ah, but you misunderstood that post.  It's 1:1 ratio from the 
> wheel to the Engine, not the drive shaft.

Umm, actually, it *is* the tranny input to output that is 1:1, not the
overall engine to wheel ratio.

[snip]

>  At lower speeds it's even worse. Assuming you wanted an 
> absolute top speed of 75mph and your motor redlined at 6500, 
> you'd want a 5:75 to 1 rear differential.

Or use an additional fixed reduction between the motor output and diff
input (e.g. appropriate sprockets and chain or belt to couple the motor
to whatever ratio diff is available).

Cheers,

Roger.