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Thread: Citroen WRT

  1. #451
    Senior Member KKS's Avatar
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    Quote Originally Posted by AnttiL View Post
    The aim for the 2017 season was to win races. Is that still the case?

    "The priority now is to prepare for 2018. Some of the upgrades will need several months of development work and they won't be ready to be introduced until the start of next season. That doesn't mean that we won't win any more events in 2017. At the Tour de Corse, we showed the performance level of the C3 WRC on tarmacÖ However, I have asked the engineers to focus on development of the car, rather than on specific settings for each rally."
    Prepare to 2018? How? Let same engineers come to same drawing-desk with same philosophy? For what reason it should be something rather than C3 again?

    I think that they must found a problem of C3 and a solution. Test at 2017 rallies and if it works - it's make a car a way faster, even to 2018 year.

    They are "prepare" with same approach with same stuff and we see what kind of results they have

  2. #452
    Senior Member Sulland's Avatar
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    So he has been there, and done that!
    www.Rallye-info.com

  3. #453
    Senior Member NickRally's Avatar
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    Quote Originally Posted by OldF View Post
    Nick, thatís a solution Iíve never seen before. Does such differential actually exist?



    Audi has a nice looking solution for torque split. This crown gear differential has a torque split front/rear = 40/60. The rear axle is rotated with a bigger diameter/radius than the front axle and therefore get more torque.

    http://www.autozine.org/technical_sc...ion/4WD_1.html



    A video of how it works.

    https://www.youtube.com/watch?v=xZ9x9jHkTrg



    The figure on page 311 explains the torque split of a planetary differential (Old Ford with a front/rear torque split 34/66).

    https://books.google.fi/books?id=2_Q...20diff&f=false



    Mitsubishi 3000GT AWD System http://www.stealth316.com/2-awd3.htm



    Hi OldF, yes I have seen one many many years ago, though they are not popular at all, but I found this scheme useful for visualizing the principal of asymmetric diff as it can be directly compared to a symmetric one.

  4. #454
    Senior Member itix's Avatar
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    Quote Originally Posted by NickRally View Post
    itix, below are couple of simple images I sketched, to give you an idea how an asymmetrical diff can physically look. Most asymmetric diffs actually do not use this arrangement, but this is a simple way of representing an asymmetric diff and should you decide to use such simple design in your vehicle, it will still perform such function.

    So here it is starting with an image of symmetric diff for reference:



    And the asymmetric one:



    You can see how in the asymmetric diff, one of the side gears is smaller than the other which would result in smaller torque being applied to the shaft connected to that side gear.
    That makes sense, thanks a bunch!
    The larger pinion gear on one side would create a larger torque due to its larger radius.

  5. #455
    Senior Member NickRally's Avatar
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    Quote Originally Posted by itix View Post
    That makes sense, thanks a bunch!
    The larger pinion gear on one side would create a larger torque due to its larger radius.
    Correct.
    I am pleased it was useful.

  6. #456
    Senior Member itix's Avatar
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    Quote Originally Posted by OldF View Post
    Nick, thatís a solution Iíve never seen before. Does such differential actually exist?



    Audi has a nice looking solution for torque split. This crown gear differential has a torque split front/rear = 40/60. The rear axle is rotated with a bigger diameter/radius than the front axle and therefore get more torque.
    etc etc
    Very interesting also. Somehow I doubt the center diff on WRC cars are viscous couplings though. They intuitively seem like a big wear point (but I could be wrong).

  7. #457
    Senior Member Eli's Avatar
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    If in doubt, flat out!

  8. #458
    Senior Member AnttiL's Avatar
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    Just quotes from the Matton interview I posted a couple of days ago.

  9. #459
    Senior Member Eli's Avatar
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    Quote Originally Posted by AnttiL View Post
    Just quotes from the Matton interview I posted a couple of days ago.
    Just shows you how slow are Autosport with their news....
    If in doubt, flat out!

  10. Likes: pantealex (7th July 2017)
  11. #460
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    Anyway on the topic of Meeke in Finland. No matter how he performs people will always point out that they were right and others were wrong.

    If he does well
    - fans will say it shows he should have never been dropped
    - the other side will say it shows that getting dropped made him more stable

    If he does bad
    - fans will say it's because of the pressure after he was dropped
    - opponents will say it shows it was right to drop him and that he has serious issues

    But clearly for his future not only at Citroen but also in other teams It will be rather important. Worst he can do is push and crash along the way, even if it's from 1 min lead on last stage. That said driving carefully and ending 8th without any top positions probably won't help either. Anything above 6th (or more precisely after Neuville, Ogier, Latvala, Tanak, Paddon but before all the rest), should be ok. Top3 result beating 1-2 of those will be like a win.

  12. Likes: itix (9th July 2017),lankey555 (6th July 2017),pantealex (7th July 2017),steve.mandzij (6th July 2017),[RMC]Pip (7th July 2017)

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