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 Post subject: Re: Head tube issues
PostPosted: Wed Aug 21, 2013 8:17 am 
Retro Guru
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Joined: Tue Aug 07, 2007 12:22 pm
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Location: Platsa, Messinias, Greece
Leave the stem tightened and remove the top cap. Is the top of the steerer tube about 3mm below the top face of the stem?


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 Post subject: Re: Head tube issues
PostPosted: Wed Aug 21, 2013 8:20 am 
retrobike rider / Gold Trader
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Andy R wrote:
Leave the stem tightened and remove the top cap. Is the top of the steerer tube about 3mm below the top face of the stem?



This. An extra small spacer on top of the stem should be gravy.


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 Post subject: Re: Head tube issues
PostPosted: Wed Aug 21, 2013 9:53 am 
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Location: West Sussex
Quote:
On my P7 I've had two different sets of forks and two different headsets (threaded and threadless)


It could be all the above but that would imply errors being made in both setups, which is far from impossible (I'm sure we've all been there :D ). Is it not more likely to be something in common in both cases, i.e the headtube itself?


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 Post subject: Re: Head tube issues
PostPosted: Wed Aug 21, 2013 9:57 am 
retrobike rider
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Andy R wrote:
Leave the stem tightened and remove the top cap. Is the top of the steerer tube about 3mm below the top face of the stem?


Yep....


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 Post subject: Re: Head tube issues
PostPosted: Wed Aug 21, 2013 9:58 am 
retrobike rider
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cce wrote:
Andy R wrote:
Leave the stem tightened and remove the top cap. Is the top of the steerer tube about 3mm below the top face of the stem?



This. An extra small spacer on top of the stem should be gravy.


Will get another spacer just to be sure then..


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 Post subject: Re: Head tube issues
PostPosted: Wed Aug 21, 2013 10:03 am 
retrobike rider
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Johnboy wrote:
Has it always felt like that? The fact that it's done the same thing with two different setups may mean it's something to do with the headtube, perhaps it needs reaming/facing? I did have to do this on a bike of mine with similar issues.


Yes, fine when riding but when lifting the bike up from the stem there's a very slight 'rock' to it, almost as if the steerer has nudged from the 'rear' of the headtube when on the ground to the 'front' of the rear of the headtube. Same feeling with two very different set ups. No issues when riding that I've noticed though.

Difficult to describe accurately!


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 Post subject: Re: Head tube issues
PostPosted: Wed Aug 21, 2013 10:04 am 
retrobike rider
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Johnboy wrote:
Has it always felt like that? The fact that it's done the same thing with two different setups may mean it's something to do with the headtube, perhaps it needs reaming/facing? I did have to do this on a bike of mine with similar issues.



I'm guessing this is the issue?


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 Post subject: Re: Head tube issues
PostPosted: Wed Aug 21, 2013 10:20 am 
retrobike rider
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Andy R wrote:

Hardly much need for a trip to the LBS :?


Well, only for a second opinion and to prove I'm not imagining anything.

Will fit another small spacer, retighten everything too.


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 Post subject: Re: Head tube issues
PostPosted: Wed Aug 21, 2013 4:06 pm 
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Joined: Tue Aug 07, 2007 12:22 pm
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Location: Platsa, Messinias, Greece
If the headtube is, in fact, ovalised (ID too large measured front to back)then reaming and facing won't do any good at all.
If you're not talking about more than say.004" of ovalisation then Loctite 641 will though.


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