Search:

Interesting. The cross tyre setup was a new concept for me when I joined WRC. I do recall the WRC TV commentators were discussing the merits of left-to-right mix, instead of cross. Apparently this...

Agree on all points. Now that more detailed pictures are showing up online, it's even clearer what they did. I particularly like the outlets towards the side of the car on their new front bumper....

Mostly, yes.

Revman, teams were allowed a certain number of "jokers" to spend on updating homologated parts (it's not free-for-all like F1 for example), split between engine and chassis. How they count each...

Well Nick, if Metal Matrix "Composite" is not a composite material, then what is? :) For once, the public copy of the regulation shows the same information as the working copy in this case:
...

The biggest difference in sound comes from the anti-lag system or ALS. Here, you can hear it activate on some cars before they rev up. https://www.youtube.com/watch?v=a5SjKyP3Wk0

I don't know if anyone is using it, but it's allowed.

In case of the engine, it is disassembled to the last bolt and nut and each and every part is inspected and characterised in the homologation. And it can be checked to this level of detail at any...

Ti is not allowed unless it is basically a sub-component of a catalogue part. Suspension components are not part of that.

Mg also not allowed other than the wheels.

Poor person's flow-viz. Take your pick.

Water:
https://www.ewrc.cz/images/2017/photos/ypf_rally_argentina_2017/mes_argentina_09.jpg

Dirt (this one is really good):...

Damper internals - no change from previous regulation as far as I know.

What could have happened with the mirrors (I don't know for certain) is that the FIA said not allowed, end of story. Simply...

Hi Revman,

1) Yes, roof vent (bit of a misnomer) for cockpit ventilation.
2) Teams run a pre-event test in representative terrain/surface before each rally, which is where the baseline setup of...

Nick, supposedly the flaps forward of wheels have some masking effect and can reduce the pressure if done right. Sorta like the rear wheel scraper certain F1 runs I guess ;)

We tested both rigid...

That's another funny point. The 2016 255a is cleaned up and presented in portrait A4 format, which is what is typically available to the public. They haven't done that yet with the 2017 255a, rather...

We will have to wait until they publish the new regs in the fully condensed format, like article 255a for 2016 which you can find on the FIA website. From 2016:

1333

What, you weren't satisfied with "we lost hydraulic so we were RWD"? :D

I can't say anything chiefly because I myself don't fully understand everything, so I can't distinguish what's common...

Nick, indeed the 400/01 form refers to the homologation dossier specific to each car. But in the working copy of the reg, this column is where you will find all the technical details. I know, because...

Nick, who do you figure did the best homework as far as optimising for yaw condition, and why? Also, it was mentioned earlier that most of the details for WRC technical regulation is under 400/01...

Hey NickRally, I enjoy reading your analysis on aero, it's always good to hear an outside opinion :) Keep it coming!

I think every team did well to hide the extra girth required for the new side...