SFN or Head Doctor ...
 

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[Closed] SFN or Head Doctor for carbon steerer?

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As above, what's best?


 
Posted : 18/02/2013 10:24 am
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*recalls the 'SFN jammed in SID carbon steerer and, btw, I weigh 18 stone' troll from days of yore*

Not an SFN is the answer.


 
Posted : 18/02/2013 10:31 am
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Vaguely remember that!

Head Dr it is!


 
Posted : 18/02/2013 10:32 am
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make sure you have a 5mm headset spacer above the stem too so that the stem clamps properly on the seerer.


 
Posted : 18/02/2013 10:35 am
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And not to breath too heavily on the head dr bolt or it'll snap


 
Posted : 18/02/2013 10:38 am
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Check the diameter as well. My flash KCNC bung wouldn't fit in my on-one mono carbons but a £3 FSA one from CRC did.


 
Posted : 18/02/2013 10:42 am
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Will do, thanks


 
Posted : 18/02/2013 10:44 am
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+1 Hed Dr was too fat for my carbon steerers. Had to use a dedicated roadie one (FSA I think)


 
Posted : 18/02/2013 10:45 am
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+1 for checking internal diameter. A large portion of my Sunday was spent swearing at one.


 
Posted : 18/02/2013 10:52 am
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Hed doctor every time. SFN can create an internal groove which can act as a crack propagation site.


 
Posted : 18/02/2013 12:20 pm
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Would the manufacturers of the carbon fork not tell you if you can't use the normal method ( an SFN) ?


 
Posted : 18/02/2013 12:23 pm
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[i]Would the manufacturers of the carbon fork not tell you if you can't use the normal method ( an SFN) ?[/i]

If they had any sense, they would...


 
Posted : 18/02/2013 1:20 pm
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most of them do - infact ive yet to see one that didnt .....

sad fact is most folk dont bother reading instructions and think they know best.


 
Posted : 18/02/2013 1:22 pm

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