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if you are driving in town (more like stop&go) in 2nd gear (stick), between 1´ and 2´ rpm and you take your foot of the throttle and then press it back on again, does your car jerk ? Is your throttle response under these conditions sort of jerky?
.....because mine does[img]/fckeditor/editor/images/smiley/MWPX/cry_smile.gif[/img], and before i run to the dealer, whos probably gonna say: they all do that...DO THEY REALLY ALL DO THAT?!?!?!
Please give me your observations,(ammoagains the dealer!!)fellow caymanites![img]/fckeditor/editor/images/smiley/MWPX/thanks.gif[/img]
Well I was in that kind of situation this morning and mine does not jerk providing I ease on the throttle, not jump on it and it also depends how low the rpm's are at the time. I seldom downshift back into first gear unless I am at a complete stop.
Now having said that, I will give it a test on the way home to see if I can make it jerk and will report back the details.
This is probably due to the shortness of 1st and 2nd gear. I actually started noticing this effect on more and more cars once 6-speed manuals starting hitting the market in mass many years ago. Adding the 6th gear shortens the first 5 gears. On cars with high torque engines, this effect is lessened since the engine has enough torque to damp out or overcomethe 'jerkiness'.
If you think this is bad, you should try to drive a heat soakedS2000 in stop and go traffic! Throttle smoothness is the key here.
Yes, I notice a little of this.......like others have said, I just think it's the nature of the beast......light car, powerful engine, short geared 6 speed, etc. While most other manufactures try and soften just about every hard edge on a car.......Porsche still leaves a bit of 'character' in its sport car drivetrains. If you drive it often and become one with the car it seems to help. If I haven't driven the CS in a few days, it always takes a bit of driving before I'm totally smooth again.
I haven't noticed this yet in normal mode but I have noticed in Sport mode that it can be a liitle jerky, abrupt might be a better way to descriobe it. Do you have Sport Chrono and is it on when you experience this?
Sport Chrono and Chrono Plus
This optional package is a valuable addition for trackday use. Available in conjunction with the CDR-24 CD radio, it includes a swivel-mounted analog and digital timer unit which is centrally located on the dashboard. All functions are easily accessible via the control stalk for the on-board computer. Analog dials measure hours, minutes and seconds, while a separate digital field displays whole seconds, tenths and one hundredths of a second. A second digital display runs in parallel in the instrument cluster. Click this Link to visit the FAQ entry for Sport Chrono.
If you think this is bad, you should try to drive a heat soakedS2000 in stop and go traffic! Throttle smoothness is the key here.
I haven't encountered this problem in my CS, but it used to happenall the time in my S2000. Gas out of 1st, lift throttle suddenly to stop for pedestrian, and the resulting back-and-forth bucking was so awful it would actually cause my foot to blip the throttle again (unintentionally), causing yet more bucking and jerking. However, this only happened in 1st, not 2nd. You should not be having this problem in a Cayman, especially not in 2nd gear.If you havepasm and sports chrono, have you tried switching off the sport button? That should decrease your throttle sensitivity.
Sport Chrono and Chrono Plus
This optional package is a valuable addition for trackday use. Available in conjunction with the CDR-24 CD radio, it includes a swivel-mounted analog and digital timer unit which is centrally located on the dashboard. All functions are easily accessible via the control stalk for the on-board computer. Analog dials measure hours, minutes and seconds, while a separate digital field displays whole seconds, tenths and one hundredths of a second. A second digital display runs in parallel in the instrument cluster. Click this Link to visit the FAQ entry for Sport Chrono.
Nick---I think you may have an issue to at least discuss with your dealer. I am continually impressed with the flexibility of modern electronic/FI engines and our Cayman S's are relatively high specific output as well. As others have said, throttle opening( or only as much as will get a result at a given RPM) is the key. I have taken to rolling thru stop signs at 900-1000 RPM, no clutch, 2nd gear, zero traffic. BUT when doing so I only use the tiniest amount of throttle at first....to the point that I don't know what the car would do if given,say, 1/4 throttle under those conditions. So if your using the gas reasonably, the car should be smooth. At least mine is.
Car is definately a little jerky in low gears w/ Sport Chrono
Sport Chrono and Chrono Plus
This optional package is a valuable addition for trackday use. Available in conjunction with the CDR-24 CD radio, it includes a swivel-mounted analog and digital timer unit which is centrally located on the dashboard. All functions are easily accessible via the control stalk for the on-board computer. Analog dials measure hours, minutes and seconds, while a separate digital field displays whole seconds, tenths and one hundredths of a second. A second digital display runs in parallel in the instrument cluster. Click this Link to visit the FAQ entry for Sport Chrono.
If the car jerks it is possibly telling you that your are not driving it correctly. It is feedback for the driver to use. Don't baby the revs in a Cayman and see if you don't have an improvement before taking it to the dealer.
Might just be a heavy foot. Sometimes in our need to speed off from a stop we tend to mash the throttle to hasten the acceleration. Add a little finesse.
__________________ Mike
2006 Midnight Blue Cayman S
I just ran my car through a variety of tests. Using only 2nd gear at various speeds and rpms it was really quite smooth.
I tried cruising along at 15 mph, 20 mph and 25 mph then applying various degrees of throttle, and found it very smooth up to about 23 mph, and then it just seemed to be a little torquey (sp). But I must say no jerkiness that I could feel, and I tried hard to make it bad, just didn't happen?
