Re: [ST] DN01 Transmission musings

["Chris Harwood" <Chris@xxxxxxxxxxxxxxxxxx>]

But it's not going to be lower complexity is it.  Just because the
electronics fit in a small box.

Beautiful engineering solutions are simple.

Chris Harwood Electronic Engineer
00 RS

Chris Harwood
**************************
Broadcast Computer Systems Ltd
PROVIDING CUSTOM SOLUTIONS
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T: (+44) 020 8559 0001
F: (+44) 020 8559 0001
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Registered in England, Company No. 2609183. Registered Office: 174
Forest Edge, Buckhurst Hill, Essex IG9 5AE

>>> ashmite@xxxxxxxxxxx 21/10/2005 21:20:55 >>>
I've heard VW's new transmission described as having all the benefits
of 
Manual Transmissions and Automatic Transmissions both, and none of the

minuses.

Manual or Automatic shifting.  Or hybrid like the Porche system that
even in 
manual, it will shift for you when needed.  (Who are you to tell Porche
when 
to shift)
Lower complexity (than an automatic) = more reliable
Faster shifting like and automatic (only faster)
lighter weight
Better fuel economy.

Have you read about their new Twin Charger engine?  1.4L 4 cylinder
with a 
primary Supercharger and a secondary turbocharger.  170HP. It's more 
powerful, lighter, faster and better gas mileage than their 2.0L

And that's before any Tuners get their hands on it.

--Joel


From: "Baysinger, Jeffrey S (Jeff)" <jbaysinger@xxxxxxxxx>
Reply-To: ST@xxxxxxxxxxxxxx 
To: <ST@xxxxxxxxxxxxxx>
Subject: Re: [ST] DN01 Transmission musings
Date: Fri, 21 Oct 2005 12:27:17 -0600

I remember seeing something a few years ago about direct-select
transmissions, but the designer was still trying to get support for
it,
and trying to get someone to try it. I think he mocked one up in a big
British sports car - Aston Martin or some such - to prove that it
worked
and that it could handle a LOT of torque. I didn't know that VeeDub
and
Audi got on board, tho it doesn't surprise me a bit.

That's cool, I'm gonna' have to go try one now!

Wasn't the DSG stumbled upon during an effort to create a better
shifting mechanism for bicycles?

- Jeff in CO

-----Original Message-----

Another high-tech transmission in production - VW & Audi call it the
Direct Shift Gearbox (DSG) - was first seen in the 2004 Audi TT and is
now available in the New Beatle TDI.   From http://tinyurl.com/dgd6h :
"... DSG radically shortens shift times by anticipating and
preselecting
the next gear. With one gear driving the wheels and another poised to
take over when the computer (or the driver) gives the nod, the act of
shifting becomes a lightning-quick relay race. Two clutches
alternately
open and close as one gear after another goes from at-bat to on-deck
status in a scant two-tenths of a second, with no interruption of the
torque flow during full-throttle acceleration."

It's just a matter of time before more of these technologies spin off
to
motorcycling.  I for one, welcome them.
--
Rick in Oregon
'01 Sprint ST
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