Author Topic: 1" fork thread die - NOW WITH PICS - ALL SORTED!!!!! (Read 4030 times)

GavinDavis · « **on:** March 16, 2013, 05:26 PM »

Right, im having an absolute nightmare trying to get my headset on some 1" forks.

Even though they were nos, the thread was a bit rusty so I wd40'd the sucka and set about it with a wire brush. The headset will only go on about 1/4 inch and then locks solid.

Does anyone have a die that I could clean the thread up with? Or point me in the direction of the right one for me to buy?

oldschoolace · « **Reply #1 on:** March 16, 2013, 05:30 PM »

Have you got an old lock nut you can use to clean the thread up with Gavin? Bit of Dw and the right spanner should do the trick, assuming the fork threads are the same pitch as your headset? $:-\$

sawzall · « **Reply #2 on:** March 16, 2013, 05:38 PM »

i have one,if you get stuck you can send them to me and i will do them for you foc

GavinDavis · « **Reply #3 on:** March 16, 2013, 05:52 PM »

Quote from: oldschoolace on March 16, 2013, 05:30 PM

Have you got an old lock nut you can use to clean the thread up with Gavin? Bit of Dw and the right spanner should do the trick, assuming the fork threads are the same pitch as your headset? $:-\$

I might be able to dig one out that I can grind the top off and use that to work it down?

Its a beartrap 2 headset so im assuming its the same pitch as my forks? I cant imagine it would be different but you never know lol

GavinDavis · « **Reply #4 on:** March 16, 2013, 05:53 PM »

Quote from: sawzall on March 16, 2013, 05:38 PM

i have one,if you get stuck you can send them to me and i will do them for you foc

Ah great stuff! If I get stuck I will give you a shout

mattbloke · « **Reply #5 on:** March 16, 2013, 06:43 PM »

i also have a die if need be

GavinDavis · « **Reply #6 on:** March 17, 2013, 01:18 PM »

Quote from: mattbloke on March 16, 2013, 06:43 PM

i also have a die if need be

What is the actual size of the die? Could I pick one up from my local engineering suppliers?

GavinDavis · « **Reply #7 on:** March 17, 2013, 03:04 PM »

So....just a quick update if anyone can shed some light for me....

Ive ground the top lip of an old 1" top nut and the bloody thing will wind down the whole length of the fork thread??

The top nut on my beartrap 2 headset will wind down all the way to the lip yet when I attempt to screw the first ring with the teeth on.....it locjs solid when the top of the fork thread is in line with the top thread of the ring? If that makes sense?

Is there anything I can do or is it a tapered thread on the headset? Im seriously thinking about grinding a couple of the top threads out in the hope it will go over? I dont get it?

GavinDavis · « **Reply #8 on:** March 17, 2013, 04:23 PM »

Well....i neatly ground out a couple of the threads from inside the top of the ring......and guess what....

The stupid thing still locks solid and wont go over the forks? I give up with it now.....its getting slung in the drawer

I can only presume that its either faulty or is a different thread to my forks? But yet the top nut is fine?....i don't know lol

not johndub71 · « **Reply #9 on:** March 17, 2013, 06:07 PM »

smash it lol

GavinDavis · « **Reply #10 on:** March 17, 2013, 07:23 PM »

Right then.....this may help, but it may not....and im getting more and more pee'd off

PLEEEEASE TELL ME WHAT THE HELL IS GOING ON?

??

Beartrap 2 lower ring......wont turn any further:

Beartrap 2 Top nut.....all the way up to the lip:

Lower ring from a 94 GT Vertigo....Locked solid and wont go any further:

Stupid gay crappy old top nut with the lip ground off.....goes up and down the thread all day?

?

not johndub71 · « **Reply #11 on:** March 17, 2013, 08:41 PM »

Headset different thread. http://www.cyclespeugeot.com/Threading.html

GavinDavis · « **Reply #12 on:** March 17, 2013, 09:03 PM »

Quote from: johndub71 on March 17, 2013, 08:41 PM

Headset different thread. http://www.cyclespeugeot.com/Threading.html

What I cant get my head around though.....This is a mid school US bike so should just take any standard 1" headset?? Ive used Beartraps on other builds and theyve threaded down no problem?

....Im at a real loss with this lol.

Any ideas??

oldschoolace · « **Reply #13 on:** March 18, 2013, 01:22 AM »

Any chance the beartrap set was incomplete and someone found a lower ring to complete it that looked right but is the wrong pitch?

Peter J · « **Reply #14 on:** March 18, 2013, 08:33 AM »

Are they normal "pro" sized forks and not mini forks?

GavinDavis · « **Reply #15 on:** March 18, 2013, 09:32 AM »

Quote from: oldschoolace on March 18, 2013, 01:22 AM

Any chance the beartrap set was incomplete and someone found a lower ring to complete it that looked right but is the wrong pitch?

Possible I suppose $:-\$ ....Im gonna ring my local bike shop today and see if they can take a look for me

GavinDavis · « **Reply #16 on:** March 18, 2013, 09:33 AM »

Quote from: Peter J on March 18, 2013, 08:33 AM

Are they normal "pro" sized forks and not mini forks?

Yep theyre normal size forks Pete......Mysterious isnt it!

not johndub71 · « **Reply #17 on:** March 18, 2013, 10:58 AM »

The only time I came across this was when I had my Marlboro BMX. I fooked the frame so bought a new frame and fork. The stem wouldnt go down the new fork, yet was an SR burner type. I would agree with nobby above the headset isn't totally complete has it should. Bummer..

GavinDavis · « **Reply #18 on:** March 18, 2013, 08:46 PM »

The local bike shop tried various 1" headsets and nothing fits??? The beartrap is as near to fitting as it gets.....but the owner is saying that he's reluctant to run a 1"x24tpi die down the thread just incase it ruins the thread

What choice have I got??....He even tried a bloody french one!! lol. Im just gonna say go for it and if it knackers the thread then so be it....

Spen69 · « **Reply #19 on:** March 19, 2013, 06:28 AM »

Gav - have the forks been re-chromed

They look like it to me.....

If so, I have an idea.

BADDH · « **Reply #20 on:** March 19, 2013, 06:49 AM »

One trick I was taught by my Dad when I started to help fixing cars was to file a V shape inside a sacrificial nut down the threads and apply plenty oil to help flush the rust/ grime into the V shape you have filed into the. Nut thus allowing the threads to clean instead of becoming damaged one turn in back off and repeat etc.

Check the thread sizes and there is also the pitch you need to check.

May not be the case here but useful in the future

Discostu · « **Reply #21 on:** March 19, 2013, 06:59 AM »

I would imagine this is a case of the thread on the forks isn't cut deep enough. I have had this before.

This means the thread is correct IE the pitch and diameter but the v isn't deep enough for some nuts. Hence why some fit and some don't.
Take them to an engineering shop and they will tap the thread so it is deeper.

GavinDavis · « **Reply #22 on:** March 19, 2013, 07:33 AM »

Quote from: Spen69 on March 19, 2013, 06:28 AM

Gav - have the forks been re-chromed They look like it to me.....

If so, I have an idea.

Theyre NOS Spen......

GavinDavis · « **Reply #23 on:** March 19, 2013, 07:34 AM »

Quote from: BADDH on March 19, 2013, 06:49 AM

One trick I was taught by my Dad when I started to help fixing cars was to file a V shape inside a sacrificial nut down the threads and apply plenty oil to help flush the rust/ grime into the V shape you have filed into the. Nut thus allowing the threads to clean instead of becoming damaged one turn in back off and repeat etc.

Check the thread sizes and there is also the pitch you need to check.

May not be the case here but useful in the future

Nice tip

hunterdubber · « **Reply #24 on:** March 19, 2013, 07:35 AM »

Phil's offer of just sending them to him , seemed straight forward

Two way postage has got to be cheaper then messing up a £20 plus Tioga headset or considering buying your own dye

Sounds like your local bike shop are a bit clueless ,if they can't sort a threading issue

Good luck , don't chuck in the towel yet $:-\$