Mercedes W17

[Lasssept]

[Lasssept]

Xavier Gàzquez

[InsaneX_Badger]

Lol the SLM button already worn out

[PlatinumZealot]

Hollow wheel spokes

https://images.ps-aws.com/c?url=https% ... 0x742.jpg

How is the hollow spoke wheel manufactured? Is it cast?

I wouldn't want to cast that, it's all very thin, takes a lot of effort to get good quality on parts like that. My guess would be that it's welded together from multiple parts.

I believe these sorts of motorsport wheels are centrifugally cast.. Magnesium so not sure if that can be welded easily.
The hollow spokes appeared with Mercedes first for sure. Can't remember if it was 2012 or 2017 or sometime like that though!

[les arcs]

How is the hollow spoke wheel manufactured? Is it cast?

I wouldn't want to cast that, it's all very thin, takes a lot of effort to get good quality on parts like that. My guess would be that it's welded together from multiple parts.

I believe these sorts of motorsport wheels are centrifugally cast.. Magnesium so not sure if that can be welded easily.
The hollow spokes appeared with Mercedes first for sure. Can't remember if it was 2012 or 2017 or sometime like that though!

Or a lost wax vacuum casting, definitely not a welded piece

[michl420]

It is said that the front wing slm system is pneumatic in the mercedes. How could that be designed?

[venkyhere]

It is said that the front wing slm system is pneumatic in the mercedes. How could that be designed?

a plunger valve that interfaces when the nose and nose-stub come together, being part of the hydraulic lines from the chassis all the way to the front of the nose.

[Y-250.A]

@iamuhammedkaya

[Vappy]

Did not know about the telemetry marker. Very cool

[Lasssept]

I was noticing that all weekend, the Merc front wing was closing at different speeds depending on the corner, and that at it's slowest, it was closing in about 800ms, twice what the rules allow. This gif is slowed 4x and lines-up two corners on Russell's car where the wing closes much faster and much slower.

reddit

[ScottB]

https://i.postimg.cc/mkvS6vSm/8m56c0b2yapg1.gif

I was noticing that all weekend, the Merc front wing was closing at different speeds depending on the corner, and that at it's slowest, it was closing in about 800ms, twice what the rules allow. This gif is slowed 4x and lines-up two corners on Russell's car where the wing closes much faster and much slower.

reddit

Wasn't their front wing system broken? Russell had one completely fail in Q2 I think, so might be reliability related rather than some sort of variable movement speed?

[matt_s]

I assume this is going to be like the compression ratio thing, How is the return timing measured - I assmue it's measured in parc-fermé conditions?

It's clear from that slo-mo that the car hits quite a severe braking bump just after SML deactivates, the force of which would be counteracting the force of the wing return mechanism. Whether that is the _only_ reason, I don't know.

EDIT: Good point from Scott on the broken FW.

[michl420]

It is said that the front wing slm system is pneumatic in the mercedes. How could that be designed?

a plunger valve that interfaces when the nose and nose-stub come together, being part of the hydraulic lines from the chassis all the way to the front of the nose.

Yes, thats part of it. But I mean primary, is there a seperate air compressor just for the front wing or has the engine such a air compressor for the valve system and the front wing cylinder is provided by this one?
And how big must be such a cylinder to bring the forces (and also the speed, which is a pneumatic "problem")?
Why they use a gas system and not a hydraulik one like on the rear wing?

[Emag]

https://i.postimg.cc/mkvS6vSm/8m56c0b2yapg1.gif

I was noticing that all weekend, the Merc front wing was closing at different speeds depending on the corner, and that at it's slowest, it was closing in about 800ms, twice what the rules allow. This gif is slowed 4x and lines-up two corners on Russell's car where the wing closes much faster and much slower.

reddit

This doesn't seem desirable. Why would you want less front downforce while braking?
Probably a malfunction. Was it the same in the race as well?

[Stu]

How is the hollow spoke wheel manufactured? Is it cast?

I wouldn't want to cast that, it's all very thin, takes a lot of effort to get good quality on parts like that. My guess would be that it's welded together from multiple parts.

I believe these sorts of motorsport wheels are centrifugally cast.. Magnesium so not sure if that can be welded easily.
The hollow spokes appeared with Mercedes first for sure. Can't remember if it was 2012 or 2017 or sometime like that though!

I remember Reynard introducing hollow-spoke wheel in the heyday of CART (mid-nineties, IIRC).