C-Matic???
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Thread: C-Matic???

  1. #1
    Sans Pond. STALLED's Avatar
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    Default C-Matic???

    Hey,

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    Could someone explain to me exactly what is C-Matic???

    Cya STalled
    2005 Renault Clio 182 Cup

    2011 Renault Megane 250 Cup Trophee - Sold

    1997 Peugeot 406 2.0 Manual - On Loan

    2004 Citroen C3 1.4 80th Anniversary (RIP)

  2. #2
    1000+ Posts George 1/8th's Avatar
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    Quote Originally Posted by STALLED
    Hey,

    Could someone explain to me exactly what is C-Matic???

    Cya STalled
    Hi Stalled...a c-matic is a type of transmission which is basically a manually operated gearbox but with no clutch. It uses a torque converter like an automatic, but you still change gears manually. As you move the gearstick a switch disengages the torque converter from the gearbox via an electrically operated solenoid which hydraulically seperates the two. When you let go of the stick once it's in gear, the two re-connect, you accelerate, and off you go.
    Because there's no clutch you could slowly move off in 3rd gear if you wanted to with no adverse affect besides lack of acceleration.
    I hope that's a clear enough description.
    Cheers...George.

  3. #3
    Sans Pond. STALLED's Avatar
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    Thanks alot, cleared it up for me!

    Cya Stalled
    2005 Renault Clio 182 Cup

    2011 Renault Megane 250 Cup Trophee - Sold

    1997 Peugeot 406 2.0 Manual - On Loan

    2004 Citroen C3 1.4 80th Anniversary (RIP)

  4. #4
    Fellow Frogger! Paul Smith's Avatar
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    However if you hear an American talking about a C-Matic they mean a Hydraulique. (they never got C-Matic CXs) That is the semi-automatic gearbox fitted to DS'. It uses a conventional clutch and gearbox with hydraulic control - just like the SensoDrive does with electrickery.

    Paul
    Paul Smith

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    1974 G Special 1220


    http://www.simplicitas.com.au

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    These c-matics are great - I love this thing I'm driving at the moment. A breeze in traffic. Does the torque converter ever wear out? With no clutch, I take it these things basically last forever - yeah? Great for towing or pulling tree stumps if that's the case

  6. #6
    1000+ Posts George 1/8th's Avatar
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    Quote Originally Posted by graham66
    These c-matics are great - I love this thing I'm driving at the moment. A breeze in traffic. Does the torque converter ever wear out? With no clutch, I take it these things basically last forever - yeah? Great for towing or pulling tree stumps if that's the case
    Hi Graham, which of your GS's has the C-matic?
    I found that mine began to work perfectly once I put some Castrol TQF in it , what a difference it made! Suddenly I could change gear as well!
    Cheers...George.

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