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For 2012: Driver gear shift requests
Posted: 04 Jan 2012, 20:04
by hardingfv32
They are adding restrictions to:
1) Clarification of multiple driver gear shift requests
2) Clarification of time allowed for shift requests to be started and completed
Were the drivers making shift requests before they were actually needed?
Were the transmissions making multiple downshifts on their own after the first request match to the cars rate of deceleration?
Brian
Re: For 2012: Driver gear shift requests
Posted: 04 Jan 2012, 22:23
by strad
I believe the answer to both is Yes
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 00:14
by Fred444
Its probably not the same, but I know the 599 GTO road car has this thing where if you hold the down paddle, it will go down multiple gears needed.
Maybe they were holding it down like that

Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 01:18
by NonNewtonic
Nope as what I've seen on Lewis he need to press on the paddle several times to carry out multiple shift
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 01:28
by PNSD
Williams used to operate a gearbox whereby they would pre-select the downshifts before a corner if they had time I believe.
Take turn 1 at Barcelona for example;
Ralf Schumacher would obviously approach in 7th, somewhere along the straight he would downshift 5 gears to take the corner in 2nd, however the downshifts wouldn't occur until the braking point.
At least I think thats how it worked.
It was during the 2002/2003 season I heard. This isn't new technology.
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 06:07
by timbo
PNSD wrote:It was during the 2002/2003 season I heard. This isn't new technology.
Yep, systems like that were widely used during 2002/2003. This was banned.
The thing they are talking about is probably advanced rev matching.
If you noticed, the multiple gear change article links to the anti-stall system. Maybe anti-stall was used as sort of engine braking system?
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 09:36
by strad
Ralf Schumacher would obviously approach in 7th, somewhere along the straight he would downshift 5 gears to take the corner in 2nd, however the downshifts wouldn't occur until the braking point.
At least I think thats how it worked.
Yep..And BTW..I thought the top teams had a modern variation on the old pre-selector gearbox, where it was in two gears at once and it only shifted upon dipping the clutch.?
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 10:55
by Richard
hardingfv32 wrote:They are adding restrictions
Hi Brian, have you any more info on this? A link to a story or an extract of the regs?
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 11:18
by raymondu999
What about instances where a middle gear like 4th is lost, and the driver does a double click on the paddle to go from 3rd to 5th?
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 16:32
by timbo
strad wrote:Yep..And BTW..I thought the top teams had a modern variation on the old pre-selector gearbox, where it was in two gears at once and it only shifted upon dipping the clutch.?
Scarbs did describe modern F1 gearbox as not being pre-select, but just very precise and fast ordinary system.
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 17:02
by WhiteBlue
This is the text
9.8 Gear changing:
9.8.1 Automatic gear changes are considered a driver aid and are therefore not permitted. For the purposes of gear changing, the clutch and throttle need not be under the control of the driver.
9.8.2 Gear changing is restricted during the following periods :
‐ Race start: one gear change is permitted after the race has started and before the car speed has reached 100kph, provided every gear fitted to the car is capable of achieving at least 100km/h at 18,000rpm.
‐ Pit stops: No gear change is permitted after a pit stop and until the car speed gets within 10km/h of the pit lane speed limit when leaving the pits.
9.8.3 The minimum possible gear the driver is able to select must remain fixed whilst the car is moving. Each individual gear change must be separately initiated by the driver and, within the mechanical constraints of the gearbox; the requested gear must be engaged immediately unless over‐rev protection is used to reject the gear shift request. Once a gear change request has been accepted no further requests may be accepted until the first gear change has been completed.
Multiple gear changes may only be made under Article 5.19 or when a shift to gearbox neutral is made following a request from the driver.
If an over‐rev protection strategy is used this may only prevent engagement of the target gear, it must not induce a delay greater than 50ms. If a gear change is refused in this way, engagement may only follow a new and separate request made by the driver. Any de‐bounce time used to condition driver gear change requests must be fixed.
9.8.4 The maximum permitted duration for down changes and up changes is 300ms and 200ms respectively. The maximum permitted delay for the latter is 80ms from the time of the driverrequest to the original gear being disengaged.
The duration of a gear change is defined as the time from the request being made to the point at which all gear change processes are terminated. If for any reason the gear change cannot be completed in that time the car must be left in neutral or the original gear.
9.8.5 Distance channel or track position is not considered an acceptable input to gearbox control.
The whole text is new to the regulations but one can safely assume that most of it is covered by piror FiA technical directives that have been in place for some time. The difference is that they are now included in the regulations. They probably do this when the wording has proved to be effective and unambiguous.
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 17:44
by Richard
Thanks WB
Its interesting to see the much talked about "100 kph" figure in print for the first time.
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 18:20
by Dragonfly
‐ Race start: one gear change is permitted after the race has started and before the car speed has reached 100kph, provided every gear fitted to the car is capable of achieving at least 100km/h at 18,000rpm.
So as I understand it they can shift to second gear before reaching 100 km/h
Re: For 2012: Driver gear shift requests
Posted: 05 Jan 2012, 21:07
by hardingfv32
WhiteBlue wrote:The whole text is new to the regulations but one can safely assume that most of it is covered by piror FiA technical directives that have been in place for some time. The difference is that they are now included in the regulations. They probably do this when the wording has proved to be effective and unambiguous.
I was taking these rule changes as flags for some creative active by the teams over the last year. You are proposing that this might not be the case in all instances?
I was hoping you some interesting puzzle solving opportunities NOT related to aero.
Brian