Craig Scarborough Profile picture
Apr 1 5 tweets 4 min read Twitter logo Read on Twitter
Speaking to guests after #AustralianGP Quali, Lawrence Stroll revealed part of the reason for AMR's pace & why LS was a little slower than FA, but much closer today
The bulged sidepods are driven by exhaust vibrations to ease boundary later build up over and the car
#F1 #f1tech
Boundary layer is a phenomena where there's a layer of air stuck to the car. Over long surfaces it builds up & upsets the aero.
AMR tech director Dan Fallows discovered at Red Bull, during the exhaust blown diffuser era, that vibrating the bodywork reduces this. As used on planes
So, the large sidepod flanks are built internally, to be vibrated by the exhausts, not using the exhast gasses, just their movement
The large flanks to the sidepods each house a large internal volume called the 'Resonant Tank'. This shakes the waterslide tunnel and the underfloor
FA has run this and found better aero performance, despite the vibration.
LS can't tun the RTs due to his pre-season fractures, as the vibration from the resonance may delay their healing. Thus, he's lacked a little speed to FA's car with the Resonance Tanks.
Such is the success the Spaniard has had with the tanks, the team are calling them Fernando's RTs.
But Lance ran just one tank in qualifying today. So Lance could finally have a FA RT in his car today on the 1st April...! 😉

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More from @ScarbsTech

Apr 1
Corner entry deceleration issues for RBR persist.
#F1 cars 'brake' in several ways. There's the hydraulic brakes, hybrid braking and engine braking. All affect how the car slows & rotates into a turn. From inputs at the pedals, calculated by the ECU.
#F1Tech #AustralianGP
Simply lifting off the throttle gives engine braking. This map can be varied from the steering wheel button (EB or Torque). Altering the throttle/fuelling at that moment.
More EB (up to a point) gives stability/understeer. Less EB gives more rotation.
Confusing things more are the differential settings, that gave a similar balancing effect on corner entry.
Read 5 tweets
Mar 5
Given the initial success, here's a closer at what probably the most changed car in the grid, the @AstonMartinF1 AMR22.
#F1 #F1Tech
Given the car's pace, the floor edge is very simple so far.
Just a single section, scroll and cut out. No floor edge flap.
There's a lot of development potential in this area.
#F1 #f1tech
Most noticable is the extreme waterslide set up.
Directing flow towards the beam wing/diffuser to added downforce.
The actual size of the gulley is hard to gauge. But, there's a lot of flat level floor exposed around the back of the car.
#F1 #f1tech
Read 7 tweets
Feb 27
During the unveiling of all the new #F1 cars, the terminology of all the shapes and features gets out of hand.
Here's a simple overview of some of the sidepod jargon we use.
Starting with 'coke bottle' this is the way the sidepods slim between the rear wheels
#F1Tech #F12023
This year a new term and popular design feature is 'waterslide', also described as downwash sidepods.
It's where the top surface slopes down the rear.
#F1Tech #F12023 #F1
An old featymure, but one that gets more extreme every year is the 'undercut'.
It's where the front corner of the sidepod tucks in
#F1Tech #F12023 #F1
Read 7 tweets
Feb 26
I had to draw the @WilliamsRacing #FW45, such nice lines and livery. It's much more conventional this year, which is probably a good idea.
#F1 #f1tech #F12023 Image
The sidepods are a mix of a downwash waterslide ontop, combined with a ridged shoulder and deep front undercut.
This seems to tick every design option and meet all of the aero functions
#F1 #f1tech #F12023 Image
While floor appears to be simple, but is a work in progress. With obvious panel lines to allow new bits to be bonded in.
#F1 #f1tech #F12023 Image
Read 6 tweets
Feb 26
Here's my closer look at the @redbullracing #RB19
Very much a RB18+ with lots of evolution of the 2022 car. No bad thing given its success and the aero testing limits for RBR this year.
#F1 #F1Tech #F12023 Image
Suspension follows last season, which has seen other teams follow its raked wishbone set up and low steering rack/trackrod position.
#F1 #f1tech #F12023 Image
The front wing is heavily loaded in the middle, despite being higher off the ground. Plus, a simpler take on the wing/endplate tricks adopted by Merc and others.
#F1 #f1tech #F12023 Image
Read 6 tweets
Feb 19
Other details on the @MercedesAMGF1 #W14 the front wing endplate.
For 2022 the endplate was made larger and straighter to reduce the outwash turbulence it created for the car behind.
So Merc created a cutout to create outwash, but this was banned over the winter.
#F1 #F1Tech
To be legal, the wing tips must meet the endplate in a specific orientation. Merc have done this with small legality parts connecting the two, as well as adding an extra fin.
Which all allows the large cut out.
#F1 #F1Tech
To the left is what the FIA envisage for this area, to the right is the big hole Merc have effectively created.
Allowing more airflow to pass down and outwards thru the cutout.
#F1 #F1Tech
Read 4 tweets

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