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Trek Marlin - exposed BB?

keysoundkeysound Posts: 3
edited July 2013 in MTB workshop & tech
I just picked up my new 2013 Marlin and I am worried whether I have a bit missing! While the shop man was showing me the bike I noticed the left-hand crank had a bit of bare metal exposed but he said it was normal. When I got the bike home a closer look shows that the left-hand side of the BB cartridge appears exposed.

Now it seems to me there ought to be some kind of cap on here, but I can't find any pix anywhere to compare with. What do people think? I have attached a couple of pics of my own.

Thanks.



MarkH

Posts

  • thelonegrooverthelonegroover Posts: 1,073
    Looks like a Shimano octalink with internal bearings. Possibly the crank could go on a bit more?
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
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    Genesis Core 20
  • thelonegrooverthelonegroover Posts: 1,073
    Thelonegroover wrote:
    Looks like a Shimano octalink with internal bearings. Possibly the crank could go on a bit more?
    •Bottom Bracket VP-BC-73 cartridge looks OK.
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
    Planet X n2a
    Genesis Core 20
  • The RookieThe Rookie Posts: 27,802
    That end cap screws into the frame, as long as it's tight that is perfectly normal (and you wouldn't know if it was tight or not from a photo!)
    Clearly not octalink as you can see that start of the square taper!
    Current steed - Whyte T129, 2013 frame, mongrel Revelations, Giant dropper, Stans S1 wheelset. 12, Magura Trail Sport brakes, 1x11. 12.8Kg
  • nicklousenicklouse Posts: 50,675 Lives Here
    looks totally normal.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • estampidaestampida Posts: 1,008
    its looks ok

    but that is a massive amount of taper showing........ I would pull the crank off and re-install just to make sure it wasn't a 16 year old that assembled the bike in the shop....
  • nicklousenicklouse Posts: 50,675 Lives Here
    estampida wrote:
    its looks ok

    but that is a massive amount of taper showing........ I would pull the crank off and re-install just to make sure it wasn't a 16 year old that assembled the bike in the shop....
    it is very rare that cranks have to be fitted by a bike shop on a new bike. none of the Treks (or others) I have unpacked required cranks fitting.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • cooldadcooldad Posts: 32,599
    Just shiny silver - it will be all cruddy soon and less noticeable.
    I don't do smileys.

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  • keysoundkeysound Posts: 3
    Thanks all, so far I am feeling quite reassured!
  • estampidaestampida Posts: 1,008
    nicklouse wrote:
    estampida wrote:
    its looks ok

    but that is a massive amount of taper showing........ I would pull the crank off and re-install just to make sure it wasn't a 16 year old that assembled the bike in the shop....
    it is very rare that cranks have to be fitted by a bike shop on a new bike. none of the Treks (or others) I have unpacked required cranks fitting.

    so that is a 100% guarantee for all bikes ever sold that they would never been taken off is it?..... didn't think so....

    no certainties in life apart from death, and your own work
  • YeehaaMcgeeYeehaaMcgee Posts: 5,740
    estampida wrote:
    nicklouse wrote:
    estampida wrote:
    its looks ok

    but that is a massive amount of taper showing........ I would pull the crank off and re-install just to make sure it wasn't a 16 year old that assembled the bike in the shop....
    it is very rare that cranks have to be fitted by a bike shop on a new bike. none of the Treks (or others) I have unpacked required cranks fitting.

    so that is a 100% guarantee for all bikes ever sold that they would never been taken off is it
    Damn well near, yes.
    My photos
  • The RookieThe Rookie Posts: 27,802
    estampida wrote:
    nicklouse wrote:
    estampida wrote:
    its looks ok

    but that is a massive amount of taper showing........ I would pull the crank off and re-install just to make sure it wasn't a 16 year old that assembled the bike in the shop....
    it is very rare that cranks have to be fitted by a bike shop on a new bike. none of the Treks (or others) I have unpacked required cranks fitting.

    so that is a 100% guarantee for all bikes ever sold
    Yes as Nick states quite clearly it is a 100% guarentee that it is rare (vanishingly so - it would cost more to get them fitted at a shop than at the factory).......now stop being a bonehead!
    Current steed - Whyte T129, 2013 frame, mongrel Revelations, Giant dropper, Stans S1 wheelset. 12, Magura Trail Sport brakes, 1x11. 12.8Kg
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