Why such tall first gears?
Discussion
BritishRacinGrin said:
I'm not sure that saying 'for most cars' and then using an RX-8 for your example is really proving your point, the RX-8 is somewhat of a special case being that it revs to north of 9000RPM and delivers no torque below about 6000. The majority of petrol engines probably have peak torque below 4000RPM.
I just used that as it is an easy graph to read. Would a Jaguar diesel be a better example or an Audi S5? They still show the same thing.
My GTi-6 is even worse, You can get 42 MPH in first, Over 70 in second.
What that means though is that the gearing for 3rd 4th and 5th are real close so you can basically really badly upset new hot hatch owners with it if you remain committed to about 7200rpm.
Somehow it has the ability to say "bye bye" to the below when you enter 3rd
206 GTI180
The new shape Fiesta ST
The old Fiesta basically goes backwards at this point
A Corsa VXR
Its annoying as hell in town though, Especially with a lightened flywheel and the worlds stiffest clutch(TM)
What that means though is that the gearing for 3rd 4th and 5th are real close so you can basically really badly upset new hot hatch owners with it if you remain committed to about 7200rpm.
Somehow it has the ability to say "bye bye" to the below when you enter 3rd
206 GTI180
The new shape Fiesta ST
The old Fiesta basically goes backwards at this point
A Corsa VXR
Its annoying as hell in town though, Especially with a lightened flywheel and the worlds stiffest clutch(TM)
eliotrw said:
My GTi-6 is even worse, You can get 42 MPH in first, Over 70 in second.
What that means though is that the gearing for 3rd 4th and 5th are real close so you can basically really badly upset new hot hatch owners with it if you remain committed to about 7200rpm.
Somehow it has the ability to say "bye bye" to the below when you enter 3rd
206 GTI180
The new shape Fiesta ST
The old Fiesta basically goes backwards at this point
A Corsa VXR
Its annoying as hell in town though, Especially with a lightened flywheel and the worlds stiffest clutch(TM)
Sorry mate but I completely disagree. The old Fiesta ST yes, the new one... not a hope. What that means though is that the gearing for 3rd 4th and 5th are real close so you can basically really badly upset new hot hatch owners with it if you remain committed to about 7200rpm.
Somehow it has the ability to say "bye bye" to the below when you enter 3rd
206 GTI180
The new shape Fiesta ST
The old Fiesta basically goes backwards at this point
A Corsa VXR
Its annoying as hell in town though, Especially with a lightened flywheel and the worlds stiffest clutch(TM)
I can't see a 306 gti saying 'bye bye' to a corsa vxr either. Regardless of ratios, the 306 is heavier, and has less power and torque at any part of the rev range than a Fiesta ST. It is slightly lighter than the VXR but I'd put money on the Corsa being quicker.
My 306 hdi does my head in when your stuck in stop start crawling traffic, thos annoying speeds that are just inbetween your ideal gear change speeds. First is too high revving and 2nd too low. Add a heavy clutch pedal to the mix and it becomes an annoyance.
Our other 107 and soon to arrive new Aygo have a longer 1st that allows you to stay in first at those speeds, alleviating clutch leg ache.
Our other 107 and soon to arrive new Aygo have a longer 1st that allows you to stay in first at those speeds, alleviating clutch leg ache.
RichardD said:
micky g said:
My Cerbera had the option gearing, did 62 in 1st...
Out of interest if you were in crawling traffic and wanted to just move the car a few feet forward, what rpm would you be dropping/slipping the clutch at ?micky g said:
To be honest I can't remember but it was easy to stall. I've not driven one with the standard box so can't say if it was any different in that respect. The gears didn't feel too long and it was fun changing down to 2nd at 60+ mph to accelerate... I remember as a kid reading the old 'Top Trump' cards, one of them giving the performance of a Monterverdi Hai that went through 60 in 1st and 100 in 2nd, thinking I'd love a car that could do that!
Wouldn't it (compared to the RV8 models) have a lightish flywheel, so that could have been a big factor there in being easy to stall?There is definitely a satisfaction in having sufficient grunt (with enough of a smooth powerband) to be able to have gearing which is sort of like not having a first gear anymore (taking a typical 1st gear for 30-40mph and 2nd for 60) because there is plenty in 2nd ....
neil1jnr said:
Sorry mate but I completely disagree. The old Fiesta ST yes, the new one... not a hope.
I can't see a 306 gti saying 'bye bye' to a corsa vxr either. Regardless of ratios, the 306 is heavier, and has less power and torque at any part of the rev range than a Fiesta ST. It is slightly lighter than the VXR but I'd put money on the Corsa being quicker.
I know when I owned mine during the commute I got lazy/took advantage of the torque leaving it in fourth 90% of the time. I'm guessing most owners do the same.I can't see a 306 gti saying 'bye bye' to a corsa vxr either. Regardless of ratios, the 306 is heavier, and has less power and torque at any part of the rev range than a Fiesta ST. It is slightly lighter than the VXR but I'd put money on the Corsa being quicker.
30-70 in fourth in the ST is slightly slower (8.2) than the GTi-6 is going through the gears full bore (7.4). The ST is seconds quicker in most in-gear increments when driven to its potential.
micky g said:
My Cerbera had the option gearing, did 62 in 1st, 102 in 2nd, followed by two short gears giving 118 in 3rd, 135 in 4th. These are all speedometer readings at the 'beep' which came in 500 or so rpm before you hit the red. Never found out what it would do in fifth!
What is the logic behind this gearing?Ozzie Osmond said:
So let's hear who, in what car, and where, is taking their car to the red-line in first gear...
If you live in the middle of the city like I do then it's a long way to find even a 40 mph limit, so having a car that redlines at 38mph in first means you never have to change gear. It's 50% of the automatic experience with 0% of the cost.Gassing Station | General Gassing | Top of Page | What's New | My Stuff