Do i understand rev-matching right?

  • Thread starter Thread starter Airetam
  • 6 comments
  • 1,223 views
Airetam

Airetam

Messages
105
Norway
Oslo
Messages
Aire_tam
I have no car experience IRL, but i feel quite confident with the wheel and think i'm ready to try some heel-toe.
Break, clutch, blip throttle first, then shift?


Sorry if this has been asked before, the search engine isn't exactly wonderful.
 
In real life you "blip" the throttle as you go between gears so the revs are roughly matched when you release the clutch pedal so you don't get compression lock up.
 
ReverenceSatans
In real life you "blip" the throttle as you go between gears so the revs are roughly matched when you release the clutch pedal so you don't get compression lock up.
Click to expand...

So that's how i should do it in gt5 aswell, clutch, neutral, blip, gear, release?

I'm venturing into a world of mis-shifts because of the clutch mechanics ingame.
 
You don't actually need to blip the throttle in GT5 as there's no adverse affect when you don't, unlike in real life. However, if you turn off ABS then blipping the throttle will help to stop the rear end from sliding out under breaking.
 
Short version:
You have the basic steps correct - clutch in, blip & downshift, clutch out.

Long version:
It would probably help if you understood what happens IRL when downshifting. The basic principle lies with the gear ratios -- at the same vehicle speed, the engine will turn different RPMS in different gears. This means the engine RPMs have to change when shifting gears, assuming constant vehicle speed. Blipping the throttle just helps the shift between gears by revving the engine to be closer to matching the next lower gear's ratio at the same vehicle speed.

So maybe 3rd gear at 50kph is 3000 RPM. And 2nd gear at the same speed is 4000 RPM. And 1st gear at the same speed is 5000 RPM. So you can drive the car at 50kph in any of these gears, but the engine will spin different RPMs at the same vehicle speed because of the different gear ratios. Blipping during a downshift is raising the RPMs to match the next lower gear's ratio at the same vehicle speed.

Since RPMs drop during upshifts (when accelerating), blipping during a downshift is basically the opposite process -- RPMs rise during downshifts.

I just bought a Corvette with a 6-speed manual transmission IRL and it's really fun to drive the car in the meaty part of the powerband, with most of it's power immediately on tap.
 
It doesn't matter how high you blip the revvs as long as its above the minimum ratio line, right?
 
Generally, close enough is close enough... the revs can be a little higher or lower and it won't matter much. A human cannot perfectly rev-match and at least a little clutch slippage and gear synchronizer use is expected. Just think of the clutch slippage and synchro use when the throttle is not blipped during a downshift, and that is considered "normal use." I can match revs pretty well on upshifts (just let off the gas) but rev-matching on downshifts takes some practice.
 

Latest Posts

Back