 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Stephen wrote:
>
> I don’t know how long a test normally takes.
In Finland they temp to be theoretical test + handling test + 30min in a
live traffic.
-Aero
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
scott wrote:
>> So what you're saying is, it won't drive away from the curb quickly?
>
> No, because if you're trying to do a fast start you can just give it
> more rpms before engaging the clutch. What I'm saying is that to get
> the most performance from the car you need to keep the rpms very high,
> this means only changing up a gear when you get near the redline, and
> probably changing down 2 or even 3 gears if you decide you suddenly want
> to overtake someone (where normally you might only change down 1 gear).
Or you can have a turbocharged engine and you don't need to change down ;).
> It has what is known as a very narrow power band, and outside of that
> band it sucks. A more "driveable" engine will have a more equal spread
> of power across all rpms, and thus might seem more powerful when driving
> around town, even if in a race it would be slower.
Yep.
http://www.dragtimes.com/images_dyno/8792-2004-Mazda-RX-8-Dyno.jpg
Note that the measuring starts at 3krpm and hits the maximum 125 ft-lbs
(according to Google ~170Nm) at 6krpm and continues to 9krpm. As a
comparison, my 1.9TiD tops 320Nm somewhere around 1700rpm, hax max hp
(150) at 4krpm and hits a limiter at somewhere around 5krpm - so it's
stopping the pull where RX-8 is just beginning. Totally different
engines to drive and the RX-8 beats my 9-3 easily from the line, if the
driver just knows how to drive it (rev it high).
-Aero
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Eero Ahonen wrote:
> temp
Tend. A brainfart.
> -Aero
-Aero
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Eero Ahonen wrote:
> Stephen wrote:
>> I don’t know how long a test normally takes.
>
> In Finland they temp to be theoretical test + handling test + 30min in a
> live traffic.
>
> -Aero
I’m talking about 30 years ago, there was no theoretical test in the UK
then. Only a driving in light traffic then set manoeuvres and a short
test of the Highway Code.
> Tend. A brainfart.
I say old chap! Are you sure that’s English? :-P
--
Best Regards,
Stephen
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> In Finland they temp to be theoretical test + handling test + 30min in a
> live traffic.
The handling test sounds cool :-)
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> http://www.dragtimes.com/images_dyno/8792-2004-Mazda-RX-8-Dyno.jpg
Very interesting, I tried to look but couldn't find one.
> Note that the measuring starts at 3krpm and hits the maximum 125 ft-lbs
> (according to Google ~170Nm) at 6krpm and continues to 9krpm. As a
> comparison, my 1.9TiD tops 320Nm somewhere around 1700rpm, hax max hp
> (150) at 4krpm and hits a limiter at somewhere around 5krpm - so it's
> stopping the pull where RX-8 is just beginning.
Mine's similar: (the grey line, not the blue one!)
http://www.superchips.co.uk/curves/BMW20D177bhp.pdf
The main point is that at around 3500 rpm our diesel cars have 3x the torque
available as the RX8, and at 2000 rpm it's probably 5x or higher. That is a
huge amount of "feeling" for when you try to accelerate at low RPMs, the RX8
is going to feel *really* slow in these situations. Of course in the RX8
you can change down 2 or 3 gears to get similar levels of acceleration, I
guess it depends how often you feel like using a lot of power :-D
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
scott wrote:
>
> The handling test sounds cool :-)
>
I think it's pretty good thing to exist. With a car you need to do the
handling test before you're allowed to drive within traffic (so called
B-card). I've also done BE (normal car with a heavy trailer) and A
(motorcycle) and they both demanded the handling test just before the
traffic test, so the training in traffic (demanded for motorcycle) is
allowed to be done even before the handling test. Luckily the driver
acadamy I drove the A-card in was a good one and checked that I can
handle even the basics of the cycle before entering traffic.
-Aero
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On Sun, 07 Feb 2010 11:35:33 +0000, Stephen wrote:
> As I said, I’ve dined out on it for years LOL It is true and I was
> slightly stunned afterwards, I felt that I didn’t get a proper test. Add
> that to only having had two driving lessons and one was two years
> before, the other was just to familiarise myself with the car I was
> taking the test in. I feel as if I should take some more as I get older
> and more responsible.
So you're saying we shouldn't ride in a car you're driving? ;-)
Jim
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On Sun, 07 Feb 2010 11:28:50 +0000, Stephen wrote:
> Jim Henderson wrote:
>> On Fri, 05 Feb 2010 12:35:32 +0000, Stephen wrote:
>>
>>>> Doing a test at the proving ground and the test objective was to get
>>>> away from something that was about to explode as fast as you could?
>>>> ;-)
>>> I've done that in a lifeboat, though.
>>
>> Hopefully as part of an exercise and not because it was an unplanned
>> situation?
>>
>>
> During a coxswain training course.
>
> Using a compass and totally enclosed. “The platform is to the North
> East, the wind’s from the South. Escape!”
>
> Boy’s games LOL
LOL, sounds like you and my mate Tim (up in Edinburgh) have some similar
stories to share. :-)
Jim
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Jim Henderson wrote:
> So you're saying we shouldn't ride in a car you're driving? ;-)
>
> Jim
Two countries separated by a common language.
But then again who asked you if you wanted a lift? :-P
--
Best Regards,
Stephen
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
