Gear Shifting Chart - Alfa Romeo Forum
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MrQ
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Gear Shifting Chart

The red dotted line represents the gear shifting path, considering changing @ 6500 rpm.



The rpm decrease in 1/2 change is quiet significant.
2/3 and 3/4 changes seem in the right range.

5th et mostly 6th gears are clearly overdrive gears.
This explains better why von Saurma did not engage the 6th on the Ring.
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Quote:
Originally Posted by MrQ View Post
The red dotted line represents the gear shifting path, considering changing @ 6500 rpm.



The rpm decrease in 1/2 change is quiet significant.
2/3 and 3/4 changes seem in the right range.

5th et mostly 6th gears are clearly overdrive gears.
This explains better why von Saurma did not engage the 6th on the Ring.
Aah. That old chestnut. Some people will not be convinced! Happy New Year everyone!
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Thanks for the very interesting chart! The general concept of the 4C gearbox appears to be similar to the one in my 1.4 Giulietta, albeit 6th seems to be even lower. At 3000 rpm in 6th my G is at 120 km/h, whereas the 4C is as high as 142! Looks like it's mostly meant for eco-cruising on the motorway.

The severe rpm drop between 1st and 2nd if you redline it is also roughly the same as in the Giulietta. Doing takeoffs in a hurry (with a manual) takes a bit of practice and is actually pretty difficult with a heavily loaded driveline.

Looks like the 4C would have been a pretty tricky ride with a manual.
 
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Quote:
Originally Posted by twauster View Post
Thanks for the very interesting chart! The general concept of the 4C gearbox appears to be similar to the one in my 1.4 Giulietta, albeit 6th seems to be even lower. At 3000 rpm in 6th my G is at 120 km/h, whereas the 4C is as high as 142! Looks like it's mostly meant for eco-cruising on the motorway.
.....
The 4c is of course a lot lighter then the Giulietta.....
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Of course. I was just mentioning the similarity in 1st -> 2nd gear ratios and the given speed at a particular rpm. All other thing being fairly unequal ..
 
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Thanks for sharing this.

Interesting that 3rd is required to hit 60mph. I suppose that with decent torque and a quick-shifting TCT the gear ratios donít have much impact on the headline acceleration figures, unlike the old days

1st looks quite short - useful in traffic I guess - although with max. torque available in 2nd from about 20mph(?) this should be fine for spirited/track driving
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