Comments on: Massa fastest again on Day 2 in Valencia http://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/ Formula 1 / F1 Sun, 12 Feb 2012 09:07:38 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: john NZhttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-49069 john NZ Thu, 04 Feb 2010 20:20:09 +0000 http://www.jamesallenonf1.com/?p=5073#comment-49069 yes all pitot-static instruments measure air pressure and display results calculated from pressure. Pitot tubes are all forward facing, placing one in the ground effect would be of limited use, as it still is only measuring relative air speed, you would need to know all your lift co-efficients to calculate a useful downforce value. If you are thinking a pitot tube pointed straight down, (i.e. a hole in the surface) then you are correct that would measure the ambient pressure under the car, so you would get a good indication of downforce, or at least a good indication of the pressure differential between top and bottom. (these are refered to as Static Holes). J yes all pitot-static instruments measure air pressure and display results calculated from pressure. Pitot tubes are all forward facing, placing one in the ground effect would be of limited use, as it still is only measuring relative air speed, you would need to know all your lift co-efficients to calculate a useful downforce value. If you are thinking a pitot tube pointed straight down, (i.e. a hole in the surface) then you are correct that would measure the ambient pressure under the car, so you would get a good indication of downforce, or at least a good indication of the pressure differential between top and bottom. (these are refered to as Static Holes).
J

]]> By: F1ARThttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-48833 F1ART Thu, 04 Feb 2010 07:23:39 +0000 http://www.jamesallenonf1.com/?p=5073#comment-48833 Who is commentating on fox?sorry can't stay around here too long go to "Push on!" Who is commentating on fox?

sorry can’t stay around here too long go to “Push on!”

]]> By: Paul Kirkhttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-48770 Paul Kirk Thu, 04 Feb 2010 00:28:15 +0000 http://www.jamesallenonf1.com/?p=5073#comment-48770 Good point re pitot tubes not measureing anything, John, I should have known that!!!! But re your "air speed" comment----what if I was checking to see if I had a possitive or negitive or how much negitive pressure under my racing car to check the amount of ground efect my air dam and skirts were creating? (Pitot tube through the floor). The measureing device would be recording presures as oposed to air speed, wouldn't they? PK. Good point re pitot tubes not measureing anything, John, I should have known that!!!! But re your “air speed” comment—-what if I was checking to see if I had a possitive or negitive or how much negitive pressure under my racing car to check the amount of ground efect my air dam and skirts were creating? (Pitot tube through the floor). The measureing device would be recording presures as oposed to air speed, wouldn’t they?
PK.

]]> By: Sparkhttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-48667 Spark Wed, 03 Feb 2010 18:22:51 +0000 http://www.jamesallenonf1.com/?p=5073#comment-48667 Martin, actually you added some valuable information to my original thoughts. I only thought about the influence it had on the laptimes given the extra fuel and stress on the tires, but it can definitely influence the race strategie.If you are stuck behind another car up untill now it wouldn't make sense to pit earlier as you would have to refuel as well so the laptimes would drop. Now you are immediately on the pace and could gain an advantage by pitting earlier.I think we could be in for a treat looking at various strategy possibilities. Martin, actually you added some valuable information to my original thoughts. I only thought about the influence it had on the laptimes given the extra fuel and stress on the tires, but it can definitely influence the race strategie.

If you are stuck behind another car up untill now it wouldn’t make sense to pit earlier as you would have to refuel as well so the laptimes would drop. Now you are immediately on the pace and could gain an advantage by pitting earlier.

I think we could be in for a treat looking at various strategy possibilities.

]]> By: Paigehttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-48633 Paige Wed, 03 Feb 2010 15:59:57 +0000 http://www.jamesallenonf1.com/?p=5073#comment-48633 According to some reports on the internet, Hamilton did one long run yesterday and turned consistently in the low 1:12s, which is apparently territory no one else matched on longer runs.Ross Brawn also singled out Ferrari and Lewis as the "quick" ones yesterday. According to some reports on the internet, Hamilton did one long run yesterday and turned consistently in the low 1:12s, which is apparently territory no one else matched on longer runs.

Ross Brawn also singled out Ferrari and Lewis as the “quick” ones yesterday.

]]> By: Paigehttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-48630 Paige Wed, 03 Feb 2010 15:57:36 +0000 http://www.jamesallenonf1.com/?p=5073#comment-48630 Oh, simmer down. Oh, simmer down.

]]> By: Nathanhttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-48626 Nathan Wed, 03 Feb 2010 15:54:14 +0000 http://www.jamesallenonf1.com/?p=5073#comment-48626 I think Lewis has proved he can look after a set of tyres from his one stoppers he did last year. I think Lewis has proved he can look after a set of tyres from his one stoppers he did last year.

]]> By: Nathanhttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-48625 Nathan Wed, 03 Feb 2010 15:51:23 +0000 http://www.jamesallenonf1.com/?p=5073#comment-48625 I dont think that mclaren car is a dog at all this year. looks very very promising based on the amount of laps they are running to get those times. (assuming higher fuel than ferrari) I cant wait to see a low fuel load glory run. then we'll see how stong the macca is! I dont think that mclaren car is a dog at all this year. looks very very promising based on the amount of laps they are running to get those times. (assuming higher fuel than ferrari) I cant wait to see a low fuel load glory run. then we’ll see how stong the macca is!

]]> By: Jamie Merrifieldhttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-48596 Jamie Merrifield Wed, 03 Feb 2010 14:18:53 +0000 http://www.jamesallenonf1.com/?p=5073#comment-48596 Maybe Kubica will be able to eat this year then! Maybe Kubica will be able to eat this year then!

]]> By: Richard Meehttp://www.jamesallenonf1.com/2010/02/massa-fastest-again-on-day-2-in-valencia/comment-page-1/#comment-48581 Richard Mee Wed, 03 Feb 2010 11:26:06 +0000 http://www.jamesallenonf1.com/?p=5073#comment-48581 I'm no aero dynamist... but I can't help thinking that the various winglets on the front wing of the McLaren add up to a fairly substantial combined flat front area which must increase drag a lot - the equivalent of pushing a log around the track. Can anyone offer any insight on whether simple is best? I’m no aero dynamist… but I can’t help thinking that the various winglets on the front wing of the McLaren add up to a fairly substantial combined flat front area which must increase drag a lot – the equivalent of pushing a log around the track. Can anyone offer any insight on whether simple is best?

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