Threading forks

Right so... I bought a frame without a fork and got my hands on a 1" threaded fork knowing the steerer tube was too long for the head tube. I assumed that extending the threading on the fork was a relatively straight forward thing to do if you had the correct equipment. i based this assumption on advice given to me by this character of a guy (who i used to work with) who was well into his track bikes 'back in the day''. He told me that such a device existed and that he has used one in the past. i called up brixton cycles to ask if they did this and, if they didn;t, if they could point me in the right direction. to my horror they told me it's impossible. Is this right? surely not!! someone take me out of my misery and tell this isn;t so... coz otherwise it's going to be an utter fucker getting my hands on a 1" threaded fork exactly the right size for my head tube?

You need to get a 1" 24tpi die (or whatever size it is).
It must be possible to get hold of them, because how else do frame builders thread the steerer?

I doubt they turn a thread on (using a lathe) before assembling the steerer to the rest of the fork.

Just thought...

Is the thread a larger diameter than the rest of the steerer tube?
If so, you won't be able to increase the depth of the thread.

is it not just a hacksaw?
i'm assuming you mean that the fork steerer tube is sticking way out of the top of the head tube of the frame when you put the fork in?
Am i right?

oh sorry.
cheerzsss.
misunderstanding.......

If its just a standard 1" steel threaded fork then you should be able to get the steerer threaded further. Trouble is finding a shop to do this as most didn't have the tools back in the day and definitely don't have 'em now.

I'd call Witcomb as they must have cutters. Barrie should at least be able to point you in the right direction.

A W Cycles in south wimbledon dropped the thread on a pair of forks for me a few years ago. Cost about a tenner. Or, try someone like chas roberts. Or, cut em down and use one of these:

http://www.billys.co.uk/english/group.php?prod=hdys-gforce

cycle surgery in camden had them like 2 years ago,so there is a chance they have them still.....or the one in procter street

the thread cutters i mean

brilliant Tris! I'll go with your recommendations

roberto has one as well, he doesn't know how to use it though.

Got these chrome nameless front forks and the threading is too short... by about 4cm... thought i could possibly get it threaded. I kinda guess that they are threaded to that lenght for a reason, would it weaken the (harden?) steel? Anyone got any experience or knowledge on this? i see a previous post about getting it done at witcomb, any where else i could do this?

Ta

Shin

I think cycle surgury spitalfields can do it. Ask Aussie Chris there.

Seen the posts on extending steering thread, but wondered if anyone has ever had ahead forks threaded?

the tube is the same, it's just if you can find someone to do it.

Bikefix told me, nah, the tube is different, it will break, and warp and you will die and your children will be cursed type reaction, Mercian said, at your own risk.

Why is ahead so damn ugly

it'll be easier to just buy some threaded forks.

Much more expensive though, and they won't match.

Unless there is somewhere selling highend straight blade columbus forks for 25-30 quid?

only a madman would want to swap FROM ahead to quill...

you can buy some ahead stems that look almost exactly like a quill stem...might be cheaper than threading forks or buying new ones.

threading something as large as a fork sterrer, with the deep precise threads needed for a headset woul be tricky to do.

Iits better to use a headset like this in such a situation.

Harrumph!
That's why this once-great nation is, quite frankly, going to the bloody dogs.
Nobody wants to embrace a challenge, it's all 'easy this' and 'convenient that'.
If Darwin had thought this way, he'd never have discovered Australia.
(Which, on reflection might have been for the best...)
confused myself face

threading something as large as a fork sterrer, with the deep precise threads needed for a headset woul be tricky to do.

Iits better to use a headset like this in such a situation.

again, you post shit! how the fuck do they do it normally!!

roberto has the tool to do it but doesn't know how to use it. or even try jos, he bought keith heaps of tools recently.

i know how to use it. easy enough too.

It shouldn't be too hard to do as long as you have the right tools and a big vice to hold the forks in. Theres a nack to using threading tools, you basicaly screw it on a bit and then unscrew it 1/4 to half a turn to cut the chips coming out. Take it slowly and reverse it to cut the chips every 1/2 a turn or so, its something that does go on feel a bit. Also use lots of cutting fluid and practise on an old set of forks.

Measure the wall thickness first and if its the same thickness as on a regular threaded fork there shouldn't be any problems threading it.