OT: Car buffs, help needed

Ken Waller kwaller at peoplepc.com
Sat Oct 31 15:31:43 EDT 2009

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

----- Original Message ----- 
From: "Adam Maas" <adam at mawz.ca>

Subject: Re: OT: Car buffs, help needed

> On Sat, Oct 31, 2009 at 2:21 PM, Igor Roshchin <str at komkon.org> 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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