Mk2,Mk3 TX200 internals

Discussion in 'Piston & Spring' started by BEESA, May 13, 2017.

  1. BEESA

    BEESA Member

    Joined:
    Apr 16, 2009
    Messages:
    239
    Location:
    Edgware , middlesex .
    Hi , could anyone tell me the differences between the mk2 and mk3 internals
    Spring lengths , piston weights , if any please
    Thanks for now
    Don
     
  2. imorik

    imorik Member

    Joined:
    Oct 24, 2009
    Messages:
    186
    Location:
    Azat-le-Ris, France
    Club:
    Ex Anston FTC
    Main difference is the latch rod is shorter on a mk3 piston so stroke is longer. Spring is stiffer and i think also shorter on a mk2. Compression tube has around 10 notches in it for ratchet on a mk2, mk3 has 3 (IIRC). Top hat/weight is longer/heavier on a mk3.

    Think this is all correct, sure someone will add to or correct any mistakes ;)
     
  3. BEESA

    BEESA Member

    Joined:
    Apr 16, 2009
    Messages:
    239
    Location:
    Edgware , middlesex .
    Thank you for the reply I will be taking it apart tomorrow
    Don
     
  4. Nick G

    Nick G Active Member

    Joined:
    Nov 21, 2012
    Messages:
    465
    Location:
    coventry
    Club:
    Greyhound/ Purley Chase
    The mark 2 stroke is 14mm less than the mark 3, piston weight is a little heavier due to the rod length , and the spring is stronger.
     
  5. Sake-San

    Sake-San La Vieille Alliance

    Joined:
    Oct 6, 2014
    Messages:
    338
    Location:
    France 87
    Club:
    l'Association Francaise de Field Target
    I was waiting for the wizard of boing to step in!. I remain very impressed with your light weight ally short stroke o-ring internals Nick...
    I know the current trend seems to be a reduced comp tube bore approach but, if the goal is knocking down tin chickens I struggle to see an improvement over what we discussed and you supplied.
    Amazing consistency across a very wide temperature range (5-40c), and a sight picture stability akin to a PCP, durability (longevity of seal etc) is also best in class.
    Optimising the lube regime is important but, no more so than with any other tune.
    So, another thank you for all of your kind inputs and so, so many hours of testing.
     

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