SS Plasma chain device fitting!

1mancity2
1mancity2 Posts: 2,355
edited April 2012 in MTB workshop & tech
Anyone got a Plasma chain device from Superstar components?

Im struggling to get it to fit, replaced one spacer drive side but my crank is rubbing the device as it turns.
Finished, Check out my custom Giant Reign 2010
Dirt Jumper Dmr Sidekick2

Comments

  • nicklouse
    nicklouse Posts: 50,675
    what cranks? what BB spacing?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • 1mancity2
    1mancity2 Posts: 2,355
    Saint double, down to one ring, 68mm bb shell
    Finished, Check out my custom Giant Reign 2010
    Dirt Jumper Dmr Sidekick2
  • nicklouse
    nicklouse Posts: 50,675
    BB spacer device or BB device spacer?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • 1mancity2
    1mancity2 Posts: 2,355
    Its iscg with a BB fitting plate
    Finished, Check out my custom Giant Reign 2010
    Dirt Jumper Dmr Sidekick2
  • nicklouse
    nicklouse Posts: 50,675
    so what order?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • 1mancity2
    1mancity2 Posts: 2,355
    BB backplate, iscg plate, spacer, BB, Cranks, the iscg plate looks thinner than the width of one of the spacer Ive taken off.
    Finished, Check out my custom Giant Reign 2010
    Dirt Jumper Dmr Sidekick2
  • 1mancity2
    1mancity2 Posts: 2,355
    Also got the chainring on the iside of the spider Nick
    Finished, Check out my custom Giant Reign 2010
    Dirt Jumper Dmr Sidekick2
  • DodgeT
    DodgeT Posts: 2,255
    You havent fitted any washers to the screws which hold the palsma to the iscg mount have you?
    I did with mine (not plasma but very similar) and it was causing the crank to catch on the screw heads.
    Took the washers off, problem gone. I did have to shorten the screws first though - hence there being washers on there to space it out in the first place.

    Could do with a pic showing your arrangement.
  • 1mancity2
    1mancity2 Posts: 2,355
    Its on and working but it rubs, will get a pic up soon.
    Finished, Check out my custom Giant Reign 2010
    Dirt Jumper Dmr Sidekick2
  • 1mancity2
    1mancity2 Posts: 2,355
    Front view,
    Picture236.jpg

    View from under BB,
    Picture238.jpg

    Picture237.jpg

    Chainline front rubbing on device inner, but in centre at rear of the plastic tab,
    Picture239.jpg

    Bottom guide is central,
    Picture240.jpg

    The crank rubs the plate as well were the small ring was fitted.
    Finished, Check out my custom Giant Reign 2010
    Dirt Jumper Dmr Sidekick2
  • DodgeT
    DodgeT Posts: 2,255
    Crank rubs the iscg plate or the screw heads?
    How is the chainline over the spread of the cassette, ie does it go from rubbing one side to OK to rubbing on the opposite side?
  • 1mancity2
    1mancity2 Posts: 2,355
    Crank is rubbing the plate not the screw heads, maybe it needs rotating round, dunno, rubs on the back of the front guide in every gear.
    Finished, Check out my custom Giant Reign 2010
    Dirt Jumper Dmr Sidekick2
  • DodgeT
    DodgeT Posts: 2,255
    Hmm, if it was rubbing the rear, you can spread it slightly by adding a washer. It's as if it needs spacing back.
    You could swap the ring to the front of the cranks, but then it would rub on the outer of the guide, unless you spread it as above.
    You'd have to check the chainline again though.

    How bad a rub is it, kind of a rub that'll sort itself out in a ride? Or rub that'll kill something?
  • 1mancity2
    1mancity2 Posts: 2,355
    It's not a hard rub but its not right and it will do my head in!
    Finished, Check out my custom Giant Reign 2010
    Dirt Jumper Dmr Sidekick2
  • DodgeT
    DodgeT Posts: 2,255
    Dunno then pal without looking at it.

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