Rattle in the down tube ...

KnightOfTheLongTights
Posts: 1,415
there's a little loose bit of something in there and it's driving me ******* bonkers
I've never taken a bike to bits before and I'm reluctant to do so unless I know there's a point to it: can you 'open up' the down tube by removing the headset for instance?
Is there a clever way to solve this ride-destroying problem?
Thanks.
I've never taken a bike to bits before and I'm reluctant to do so unless I know there's a point to it: can you 'open up' the down tube by removing the headset for instance?
Is there a clever way to solve this ride-destroying problem?
Thanks.
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Comments
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I guess the first thing to do is try and think what it might be in there - are all your bottle bosses intact?
What's the frame construction?
Bottom Bracket is possibly the way to go - easy to whip out and see if there is a hole through into the down tube - give things a shake and see if it falls out.
Headtube might work as well - but maybe more of a faff to get into due to less space.
Good luck!0 -
Yoik off the seat as well and have a gander down the seat tube.0
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Gear cables hitting the frame maybe?More problems but still living....0
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amaferanga wrote:Gear cables hitting the frame maybe?
no it's deffo something in the down tube (i.e., it rattles up and down as you turn the bike over etc).
Marcus, I was thinking that taking the bottom bracket off would be the hard way...
It's a Specialized Allez with some particularly ugly welding work between tubes ...0 -
I had this problem on one of my bikes (it was bits of carbon dust left over from the manufacturing). It sounded like soft rain inside the seat tube. I plugged up every hole apart from one and then stuck the hoover on it. Got quite a bit of the rattle out.
Carbon or not I'd give the hoover a shot.0 -
thegreatdivide wrote:I had this problem on one of my bikes (it was bits of carbon dust left over from the manufacturing). It sounded like soft rain inside the seat tube. I plugged up every hole apart from one and then stuck the hoover on it. Got quite a bit of the rattle out.
Carbon or not I'd give the hoover a shot.
nice, thanks
this is definitely one bit of plastic or metal - roughly pea-sized I'd say
it might 'suck out' ...0 -
Could be the remains of a drilled-out bottle boss ? BB out is easiest option, apart from obviously requiring a BB tool. It`s a 5 minute job with the correct tools.
Not certain that you will gain access to the inside of the tube though so don`t take it as gospel, never noticed if there is a hole through the BB shell into the downtube when I`ve had an Allez in bits :?Jens says "Shut up legs !! "
Specialized S-Works SaxoBank SL4 Tarmac Di20 -
The good news is that the down tub should be open at one end - most likely both. get the BB off and give it a thorough shake. I'd hold the seat tube and one fork leg while doing this to avoid a handlebar on the head (the bike's and yours)Specialized Roubaix Elite 2015
XM-057 rigid 29er0 -
Recently had 2 BBs out, and in neither case could I get into the downtube from there.
Fortunately I wasn't trying to.0 -
Could be a bearing from the headset popped out. I have an Allez and had the same problem. Specialised use the most annoying bearings in the Allez headset, the bearings can pop out. I had to strip my headset, replace the bearings and remove it by shaking.
Good luck!0 -
the easiest solution would be to take a bottle boss bolt out and pump a blob of grease in there, what ever it is in there will stick to it, problem solved.
use one of these.0 -
It could be a plectrum.0