0-60 speeds

I hope this doesn't turn out to be a dumb question but...
When they test those 0-60 speeds on a standard transmission is there a
set protocol for at what rpm you shift and how many gears are used?

"Tilbalang" > wrote in message
...
>I hope this doesn't turn out to be a dumb question but...
> When they test those 0-60 speeds on a standard transmission is there
> a
> set protocol for at what rpm you shift and how many gears are used?
>
Most times it is best to shift just prior to when peak torque is
reached, that will vary by the engine being tested. If you can't reach
it very early in 2nd, sometimes 1st, you don't want to know the time
or the RPM. ;-)

"Dad" > wrote in message
...
> "Tilbalang" > wrote in message
> ...
>>I hope this doesn't turn out to be a dumb question but...
>> When they test those 0-60 speeds on a standard transmission is there a
>> set protocol for at what rpm you shift and how many gears are used?
>>
> Most times it is best to shift just prior to when peak torque is reached,
> that will vary by the engine being tested. If you can't reach it very
> early in 2nd, sometimes 1st, you don't want to know the time or the RPM.
> ;-)

Yes... but are the TESTS standardized in some way - is the question?

-W

The answer would be no. Whatever gives the quickest time.

On 6/30/2010 3:43 PM, Tilbalang wrote:
> I hope this doesn't turn out to be a dumb question but...
> When they test those 0-60 speeds on a standard transmission is there a
> set protocol for at what rpm you shift and how many gears are used?

"Clams Canino" > wrote in message
m...
>
> "Dad" > wrote in message
> ...
>> "Tilbalang" > wrote in message
>> ...
>>>I hope this doesn't turn out to be a dumb question but...
>>> When they test those 0-60 speeds on a standard transmission is
>>> there a
>>> set protocol for at what rpm you shift and how many gears are
>>> used?
>>>
>> Most times it is best to shift just prior to when peak torque is
>> reached, that will vary by the engine being tested. If you can't
>> reach it very early in 2nd, sometimes 1st, you don't want to know
>> the time or the RPM. ;-)
>
> Yes... but are the TESTS standardized in some way - is the question?
>
> -W
>
It seems to me it would be a bit hard to standardize a shift point
based on RPM. If you are running a test for an 0-60 speed with a car
that develops 9,000 RPM redline and then try the same with one that
redlines at 6,500 you have a false comparison. The shift point has to
be based on peak torque/HP to get even a basic comparison.

So yes, there is a protocol for what rpm you shift and how many gears
are used based on where the engine reaches it best torque/HP. Then
that is recorded as the 0-60 time for a standard (?) for that car.

Standardization may also rule out using reverse, steep inclines both
positive and negative, and during snow storms or floods.

"Tilbalang" > wrote in message
...
>I hope this doesn't turn out to be a dumb question but...
> When they test those 0-60 speeds on a standard transmission is there a
> set protocol for at what rpm you shift and how many gears are used?

I've always thought they tried the run numerous times using several
techniques and the fastest time is what made it in the article.

AJM
'93 40th Anniversary coupe, 6 sp (both tops)

In article >,
Tilbalang > wrote:

> I hope this doesn't turn out to be a dumb question but...
> When they test those 0-60 speeds on a standard transmission is there a
> set protocol for at what rpm you shift and how many gears are used?

Just before the rev limiter gets you. If you stay in 1st or 2nd too long
the rev limiter will cut in hose your time