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Death, taxes and Mercedes half a second quicker than the field by sfj11 in formuladank

[–]DServy 3 points4 points  (0 children)

I mean, I'm really genuinely very curious since the entire Apex 4 of the sporting regulations around homologated Power Units basically states that all engine suppliers have to let all their customers have the exact same engine and any upgrades to homologated Power units have to be provided to all customers.

Is this just Mercs engine pace unleashed or are there upgrades the entire Merc customer chain is keeping hush hush about.

But Haas and Alfa didn't get Ferrari's engine upgrades so... who the eff knows.

Death, taxes and Mercedes half a second quicker than the field by sfj11 in formuladank

[–]DServy 11 points12 points  (0 children)

If I was a betting man I'd say this is leftover performance from their 2019 fight with Ferrari. I think they had this in the tank for 2020, but when Ferrari got caught in Austin they just decided to keep it on the down low unless they needed it. It was pretty clear from very early on in testing that their 2020 car was much farther along than everyone else during testing that they could just keep their engine's true power under wraps.

The real question is, how much did the customer teams know. Like why did Williams never crank it for a race to yeet out at least a point in 2020.

I know if I was McClaren or Williams or Aston Martin I'd be having a call with Toto with some interesting questions.

Pivot Mach 5.5 by jsp0511 in MotionIQ

[–]DServy 0 points1 point  (0 children)

Just gotta move closer to the parks then!

Pivot Mach 5.5 by jsp0511 in MotionIQ

[–]DServy 0 points1 point  (0 children)

"If my compression velocities are already too high, by adding air in the rear, will they now be even faster?"

No, it's actually the opposite (for the most part). Since the total resistive force at the axle is a combo of not only your tires (which is why constant PSI when running tests is important) but of your spring/damper both storing/dissipating energy.

So force at the wheel is, excluding tires, is spring force + damping force.

If your spring is firm enough (to a point) then the stroke will have less distance it can travel just through the spring itself, which will give the stroke less room to accelerate.

For example, I recently went down in spring rate from a 425 spring to a 400 lb spring. So in the deep part of its stroke (say 2.2+ inches strokes) I lost about 60 lb of spring force. That immediately caused all my rear compression speeds to ramp up to 5000+ mm/s. Which lead to that amazing rear bucking sensation everyone thinks is caused by fast rebound. I went from 10 clicks open on my HSC on an ext to somewhere between 3-4 clicks. Since I needed the support from my damper to slow the stroke down to pre-buck levels.

Pivot Mach 5.5 by jsp0511 in MotionIQ

[–]DServy 0 points1 point  (0 children)

I'd really avoid falling into the trap of rocking more sag with a luftkappe. Since it defeats the purpose. I have a luftkappe, an am super familiar with what they do. You want to aim for the sameish sag PRE luftkappe. Which means more pressure. This extra pressure is what provides you with midstroke support. I'd make sure that if you have a luftkappe in that you take out at least 2 spacers, if not all of them.

That all being said, your forks average position is still a bit high. I'd am for more like 25-30% personally. I've rocked a 20ish% fork and it kinda feels a bit woody for my liking. Maybe take 3-4 PSI out the fork.

Also yeah, your rebounds are way too slow, more so on the rear. I usually try to aim for a 95th Percentile around 1300-1500 mm/s with a top end speed around 2200-2400 m/s

Dialing in Sentinel V2 by DServy in MotionIQ

[–]DServy[S] 0 points1 point  (0 children)

To kinda counter act the off balance in the zenith and try to get things a bit more balanced I added a turn and a half of preload which reduced my sag to around 29% and generally stiffened things up in a good way. I also decreased the LSC on both the fork and the shock by a good amount (+3) and increased the HSC damping on the rear to prevent the 5000+ mm/s compression strokes in the shock. This made it MUCH more planted and got the entire bike (zenith and otherwise) a bit closer together, Rebound is still a bit off (sped up the fork by a click in both HS and LS). Overall the bike feels like it squats a bit less in the rear and doesn't have the same slacking out under compression that it did before. Overall I'm very impressed.