Removing Hope Head Dr

Gabber · June 2007

Many moons ago I stupidly over torqued the bolt on my Hope Head Dr, resulting in the bolt shearing. I've lived with it for ages, but now the headset has developed some (read - a lot!) of play and I need to remove the head doctor and replace it and sort my headset out.

Any ideas on how to remove/loosen the head dr? The bolt has sheared flush with the top of the expanding wedgey thing so there is absolutely nothing to grip onto.

Is it possible to do anything from the bottom (i.e. up the fork steerer?

www.eppinghardcru.co.uk

Unknown · June 2007

well as it is just alloy drill the center out and then undo it as there should be no tension on it. then just undo the locking part as normal.

nick
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GT-Dave · June 2007

Yep, drill it out. And sort your BB out whilst at it. [;)]

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Unknown · June 2007

alternatively just ride on it for 10m without clamping the stem.. they normally drop out then! [;)]

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Unknown · June 2007

Then buy a SFN lol!

Hed Doctor - solution looking for a problem

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Unknown · June 2007

the problem with drilling is this, you WILL be turning the mech in the same direction as you tighten it and you "could" end up misshaping the steerer tube and putting a bulge in it..

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Unknown · June 2007

? what mech? on mine there was a gert big allen key hole for tigtening it in the steerer and that had a smaller hole through it for the bearing preload bolt.

if you sheraed the fitting "bolt" the whole thing would have fallen out.

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Unknown · June 2007

sorry mech meaning mechanism that causes the headdoc to expand..
should have been more accurate.

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Unknown · June 2007

I would imagine you'd have to put an enormous torque on it to bulge a steerer!

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Unknown · June 2007

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by supersonic

I would imagine you'd have to put an enormous torque on it to bulge a steerer!

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<hr height="1" noshade id="quote"></blockquote id="quote"> supposedly done on a manitou fork (well split) but hope could not reproduce the effect.

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Unknown · June 2007

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Fozzybear

sorry mech meaning mechanism that causes the headdoc to expand..
should have been more accurate.

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but again the only bolt is the "top cap" bolt and just touching it with a drill should rally cause it to screw itself out the other side?

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Unknown · June 2007

sorry nick i think it's my poor description.

the end the bolt screws into is an expanding plug, if he is drilling out the is the chance he may catch the expanding mechanism and bulge the steerer.

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ahoy-hoy · June 2007

No need to piddle around with girly drills like this lot suggest [:D][:p]

You will need:

1) long, large screwdriver
2) big hammer

Proceed as follows:

1) Insert screwdriver up steerer tube from beneath
2) Smack seven bells out of screwdriver with hammer
3) Repeat step 2) until something breaks.

You won't find that on the Park Tools website. Bunch of amateurs.

The above procedure also works well for truing wheels, removing stubborn bottom brackets, fixing kitchen cupboards etc... etc...

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Unknown · June 2007

hmmmmm i guess your no brain surgeon Julian [;)]

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ahoy-hoy · June 2007

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Fozzybear

hmmmmm i guess your no brain surgeon Julian [;)]

<hr height="1" noshade id="quote"></blockquote id="quote">

I have dabbled. Works for that too, but better with a slightly smaller hammer.

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Unknown · June 2007

sounds like graham has been to your school of Bike Tech.....

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ahoy-hoy · June 2007

I taught him to drive too [;)]

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Unknown · June 2007

haha.. i guess so.. no wonder you have no car..

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Clunkwmb · June 2007

Get yourself a stud extractor set. I'll happily lend you mine if you drop me your address but their so cheap on the bay, you might want to get your own for not too much more than the cost of return postage. Or you could always coax the bolt out with a hammer & punch.

Gabber · June 2007

Cheers Mr Clunk - one extractor set bid and on it's way - hopefully I'll have a sorted headset again!

www.eppinghardcru.co.uk

Removing Hope Head Dr

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