Bottom bracket broken?

[naked_draughtsman]

Just spent a couple of hours sticking new brake pads on my bike and
fixing the gears so I can use the full range now.

After everything was done and I'd oiled the chain I noticed that the
bottom bracket seems to be a bit loose. On inspection, there seems to
be lots of black grease exposed on the drive side which I've never
noticed before. Has my bottom bracket died an untimely death?

I'm pretty sure it's not something simple like a loose crank arm or
pedal because wobbling one of them wobbled the other (if the crank/
pedal was loose it shouldn't transmit through to the other side).
This may be the root of my gear problems as the front derailleur only
just goes far enough across to shift onto the biggest chainring.

I'm pretty sure it's supposed to be a sealed one which should last for
more than 18 months/4000 miles!

peter

 

[POHB]

On Mar 15, 11:59 am, naked_draughtsman <[email protected]>
wrote:
> Just spent a couple of hours sticking new brake pads on my bike and
> fixing the gears so I can use the full range now.
>
> After everything was done and I'd oiled the chain I noticed that the
> bottom bracket seems to be a bit loose. On inspection, there seems to
> be lots of black grease exposed on the drive side which I've never
> noticed before. Has my bottom bracket died an untimely death?

Sounds like it. Better take it off and have a look, it might just be
loose but I suspect the worst.

 

[M-gineering]

naked_draughtsman wrote:
> Just spent a couple of hours sticking new brake pads on my bike and
> fixing the gears so I can use the full range now.
>
> After everything was done and I'd oiled the chain I noticed that the
> bottom bracket seems to be a bit loose. On inspection, there seems to
> be lots of black grease exposed on the drive side which I've never
> noticed before. Has my bottom bracket died an untimely death?
>
> I'm pretty sure it's not something simple like a loose crank arm or
> pedal because wobbling one of them wobbled the other (if the crank/
> pedal was loose it shouldn't transmit through to the other side).
> This may be the root of my gear problems as the front derailleur only
> just goes far enough across to shift onto the biggest chainring.
>
> I'm pretty sure it's supposed to be a sealed one which should last for
> more than 18 months/4000 miles!
>
> peter

[rant]If it is one of those newfangled external bearing ones (with tiny
balls running in a homeopatic dose of grease) it is highly likely it
will only last a single season [/rant]

--
/Marten

info(apestaartje)m-gineering(punt)nl

 

[naked_draughtsman]

On Mar 16, 9:10 am, M-gineering <[email protected]> wrote:
> [rant]If it is one of those newfangled external bearing ones (with tiny
> balls running in a homeopatic dose of grease) it is highly likely it
> will only last a single season [/rant]

I doubt it's anything that fancy! It's only a GT Aggressor (2006
model).

I've got the non drive side cup out, have just had to come in and make
a retaining tool for the drive side as it's well stuck in and there's
not much spline to get the tool into.

Might manage to get out for a ride eventually this weekend...

peter