Another #AbsurdF1Comparison - springs.
A roadcar spring (large), Williams rear corner spring, Force India torsion bar
#F1 cars used to use coil springs mounted around dampers (coilovers) to support the car. Torsion bars replaced coils as they were easier to package (1990s).
There are other spring types used on #F1 car suspension.
Often heave movement is controlled by Belleville washers, flat cone metal springs that can be stacked to gain the reqd spring rate.
Then there are carbon fibre disc springs, similar to bellevilles.
The problem with coil springs mounted over dampers is the sideforce they out into the damper. This video shows the effect.
Additionally coilovers are large assemblies to package and any change in spring or damper means both have to be removed.
Lastly, there are gas springs.
They look like a damper, but the piston compresses the fluid rather than passes through it. Inside is gas (nitrogen) and sometimes oil.
It can have a high level of preload (from gas pressure).
But also with oil inside can have a non linear effect

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More from @ScarbsTech

22 Dec
There are all new regs coming to #F1 for 2022
The cars will be totally different, as the problems of overtaking have been studied and the rules start to resolve the issues.
This has been in the pipeline for years
Thread:- Image
The aims are to reduce the wake the car creates from its complex aero (FW, bargeboards etc). While at the same time trying to make the following car less affected by the wake, i.e. not losing so much downforce.
So, the car us simpler and creates more downforce under the car. Image
Teams will redesign the entire aero package from scratch. Theres no reference or carry over to the current aero.
The tyres & wheels get bigger
Power units & gearboxes gain 1 final upgrade, then are homologated until 2026 Image
Read 4 tweets
7 Nov
Troubles with rear wings are rare, but it can be dangerous when there are
What makes up a rear wing?
Lots of tech regs define the 2 wing elements and endplates. Teams are allowed DRS and 2 wing supports too.
The exterior surfaces are largely made from carbon fibre with a white foam core (rohacell). Aluminium sections end the wing elements and allow the DRS to pivot and the wing angle to be adjusted with shims. Some teams bond the wing at a fixed angle and adjust only the gurney.
DRS is a hydraulic ram that pulls the flap with a lever arm to its open position
Spherical end bearings are used to allow for flex in the flap, despite teams often running a centre support
Regs set out the normal and open gap, a max of 85mm is allowed.
DRS can be used in 2022
Read 4 tweets
4 Nov
I did these sketches to explain the #F1 power unit to someone. You might find them fun to look at...
This is the basic components of the PU
This one outlines the concept of the turbo
The two Hybrid systems (ERS Energy Recovery System)
Read 4 tweets
1 Nov
Theres a lot going on the front end of the Red Bull RB16b. Ducting, tanks and suspension geometry. Image
The S-duct is conventional enough, the inlet cleaning up the compromised airflow in the undercut between the cape and nose.
Then the narrow be-winged outlet at the top, a feature unique to RBT Image
More complex is the open nose arrangement, the ducts low down under the actual nose crash-structure, to exit rearwards facing opening behind the Cape.
Weight distribution is played with by having the driver drink tank in the nose and auxiliary oil tank hanging below the chassis. Image
Read 4 tweets
22 Oct
A thread about #F1 trick rear suspension.
Teams have been using a trick set up called "collapsible rear heave springs". This boosts top speed and has been a trick used knowingly by all teams for years.
At speed increases, downforce increases the load on the suspension, thereby compressing it. Compress too much and the airflow under the car stalls losing drag/downforce. There comes a point that the car has enough downforce even with a stalled underfloor, so teams exploit this.
As the rear compresses, the rear heave gas spring resists the force to keep the rear end propped up. At a predetermined speed, the load on the gas spring opens a valve, collapsing the rear to lower it and stall it.
Read 5 tweets
22 Oct
Random tech pictures from @ScarbsTech archive #USGP 2015
Nuts... 🥜🥜🥜
Timing beacon
Read 7 tweets

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