The biggest challenge of trying to change the length of wheel base, is going to be completely changing the CFD configurations and remodeling (re-calibrating) the wind tunnel. If they want to do that, they cannot really focus on the current car's upgrades as they cannot produce upgrades using a completely changed model. Just to quote, when the nose regulations were tightened for 2015, the W06 had lost a lot of downforce. A Small change, but the whole flow had changed. So, it's not easy to simply move from 3,706mm to 3,620mm (as you have suggested to be in between the current wheel base and Ferrari's current wheel base). An 80mm length is a sea change in terms of behavior of the car. It forces changes in weight distribution, engine and other mechanical mountings, cooling systems, suspension layout, aero load etc., Data for every parameter that they have collected on the current car, could potentially become useless.Restomaniac wrote: ↑26 Sep 2017, 10:56True but I don't think it will be AS long. They have mentioned how much of a diva she is. I can see them knocking a small amount of length off to settle her down. I also wonder if they will go back and look at their tiny amount of rake? All obviously in layman's terms.GPR-A wrote: ↑26 Sep 2017, 10:03From a layman perspective, we can attribute their challenges to the longer wheel Base. But, I have this feeling that they strongly believe in evolving the philosophy that they have chosen, which is how have always operated. So, I wouldn't be surprised to see if W09 would turn up with another longer wheel Base, minus the current challenges.Restomaniac wrote: ↑26 Sep 2017, 09:40That list is interesting. Ferrari HAVE to win this year. The Mercedes Achilles heel has been their long wheel base. If they shorten that somewhat (a halfway house between themselves now and the Ferrari length) to fix their shortcomings then where do Ferrari go next?
They chose to go for longer wheel base in the first place, for a number of reasons. They probably took that decision at a certain stage, where they did not completely envisage the challenges that they were going to face. Now that they have faced the challenges and have rectified a great deal of them, it would be foolish to backtrack and chase something that they had ditched a year (may be more, as they have separate design team that works on designs for 2 years ahead) back as that design did not provide them what they were looking for. They anyway don't build a car for street circuits, so it shouldn't really bother them too much that they have struggled in Monaco and Hungary (could have struggled in Singapore if not for the start mayhem).
Unlike the past 3 years, Mercedes cannot afford to move resources to next year's car early and drop the upgrades for the current car. The fight with Ferrari is really hard and they have to produce upgrades, even if they are refinements. So, changing the CFD and Wind tunnel model is going to be a huge challenge to move in a direction that they do not know (which they had ditched after figuring out that it wasn't working) and compromise the current season.