Apparently the Mini Cooper with the original CVT was able to squeeze a
few more miles per gallon than the later version that had artificial
shift points added.
Ken Waller wrote:
I've driven some late model CVTs and find the lack of shift feel
un-nerving, you're always waiting to the - not to come - shift. If the
advantages were worth it, I'm sure I could get use to it.
Kenneth Waller
http://www.tinyurl.com/272u2f
----- Original Message ----- From: "Adam Maas" <[email protected]>
Subject: Re: OT: Car buffs, help needed
On Sat, Oct 31, 2009 at 2:21 PM, Igor Roshchin <[email protected]> wrote:
What I actually meant is more about the jerky sound which happens
even in case of an AT.
And on top of that, - even with AT you can
feel the gears switching (even if you are deaf), - the abrupt change
in acceleration is stil there.
You don't feel that with CVT. - That lead to a perception (at least
among US consumers) that the engine is not powerful enough.
That's why companies started simulating stepped transmision on top
of CVT's.
Igor
PS. And I agree with William Robb on what constitutes a competent
driver.
That feel was part of the issue, but the first wave of CVT's in the
late 80's did rob power from the car, not due to efficiency losses,
but due to effectively shifting up too fast, robbing the car of power
at the wheels. The modern computer controlled CVT's have much better
control over the ratio variation and thus can keep the change down
when accelerating hard, which removes the feel of gutlessness. They're
also using more powerful engines in cars now, it's a lot easier to
make a 70-100HP, 2500lb car feel gutless than a 250HP 3500lb car.
--
M. Adam Maas
http://www.mawz.ca
Explorations of the City Around Us.
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