drop out adjuster screws seized

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garygkn
Posts: 1378
Joined: 16 Aug 2008, 8:59pm

drop out adjuster screws seized

Postby garygkn » 22 Apr 2015, 3:31pm

I have an old touring bike which rides well.
However drop out adjuster screws are both seized.
I can remove the the back screw on caps by hand.
I have been spraying GT85 on them for the last 3 days.

The screw are posidrive but I'm not sure what exact size.

I wanted to remove them as I'd like to try this bike out as single speed/fixed with 32c tyres for the winter commute.

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Brucey
Posts: 38530
Joined: 4 Jan 2012, 6:25pm

Re: drop out adjuster screws seized

Postby Brucey » 22 Apr 2015, 5:03pm

if you are in no rush the longer you can leave it with the penetrating oil on the better. Heat will help when time comes to shift them. So will trying to turn both ends of the screw at the same time if you can gain purchase. Tapping the screw lengthwise using a light hammer can often help to shock the screw and break any bonds of corrosion there might be.

If they get really stuck then you can put a blob of weld metal on the end of the screw and this adds heat where they need it most. Often they come free when you do this even if they have resisted everything else prior to that.

Last resort is to drill out and retap; the thread is M3.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

Ugly
Posts: 396
Joined: 14 Jul 2009, 8:34am

Re: drop out adjuster screws seized

Postby Ugly » 22 Apr 2015, 5:10pm

If you going to change to a single speed just break off the part within the dropouts as you wont need the adjusters.

garygkn
Posts: 1378
Joined: 16 Aug 2008, 8:59pm

Re: drop out adjuster screws seized

Postby garygkn » 22 Apr 2015, 5:29pm

Hi Ugly - I thought about removing them but then thought it's not reversible.
It would be better to get them out now rather than regret sawing them off later.

Hi Brucey,
I'll soak them for a while and then take your suggestions from there.

Many thanks.

123malford
Posts: 98
Joined: 12 Nov 2011, 5:51pm

Re: drop out adjuster screws seized

Postby 123malford » 22 Apr 2015, 6:45pm

I bought one of these http://www.ebay.co.uk/itm/PROF-WINDPROO ... 20ee56d3fd and spent about an hour the other day alternately heating and spraying with GT85 a very seized adjuster one end of which had been snapped by persons unknown. It came out and there was only discoloration to the paintwork.

garygkn
Posts: 1378
Joined: 16 Aug 2008, 8:59pm

Re: drop out adjuster screws seized

Postby garygkn » 22 Apr 2015, 6:51pm

Thanks for that.
I'm going to continue with some:

Toolstation penetrating oil - it has a good rep.
http://www.toolstation.com/shop/Automot ... Oil/p62311

And then heat!

fastpedaller
Posts: 2418
Joined: 10 Jul 2014, 1:12pm
Location: Norfolk

Re: drop out adjuster screws seized

Postby fastpedaller » 22 Apr 2015, 8:35pm

123malford wrote:I bought one of these http://www.ebay.co.uk/itm/PROF-WINDPROO ... 20ee56d3fd and spent about an hour the other day alternately heating and spraying with GT85 a very seized adjuster one end of which had been snapped by persons unknown. It came out and there was only discoloration to the paintwork.


The other option you could try ........ If you have a large soldering iron, you could heat it up and hold it for a couple of minutes on the screw to see if it helps - less danger of damaging the paint than a naked flame.

garygkn
Posts: 1378
Joined: 16 Aug 2008, 8:59pm

Re: drop out adjuster screws seized

Postby garygkn » 22 Apr 2015, 10:14pm

Great idea.
I'll have a look for that soldering iron.

fastpedaller
Posts: 2418
Joined: 10 Jul 2014, 1:12pm
Location: Norfolk

Re: drop out adjuster screws seized

Postby fastpedaller » 22 Apr 2015, 11:01pm

garygkn wrote:Great idea.
I'll have a look for that soldering iron.

Needs to be a big one though - none of this mickey mouse stuff! An alternative would be a large bolt or similar heated to red heat with a blowtorch, and then held against the screw! I have a carbon arc attachment for the arc welder for heating items, it's very very hot and can melt steel in a few seconds - you certainly wouldn't want to try heating a bike frame with it!

garygkn
Posts: 1378
Joined: 16 Aug 2008, 8:59pm

Re: drop out adjuster screws seized

Postby garygkn » 22 Apr 2015, 11:07pm

I may just be able to find the medium could even be small one.
I don't have anything bigger.
Maybe that lighter will get thigs hot enough?

fastpedaller
Posts: 2418
Joined: 10 Jul 2014, 1:12pm
Location: Norfolk

Re: drop out adjuster screws seized

Postby fastpedaller » 23 Apr 2015, 8:42am

Why not try the soldering iron first - just to see if it'll do it before resorting to naked flame?

garygkn
Posts: 1378
Joined: 16 Aug 2008, 8:59pm

Re: drop out adjuster screws seized

Postby garygkn » 23 Apr 2015, 10:08am

I will do that.
I leant it out but I can get it back in about 10 days from now.
So for now I'll just soak the ends.

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barrym
Posts: 633
Joined: 22 Jun 2012, 10:05am
Location: Corsham - North Wilts

Re: drop out adjuster screws seized

Postby barrym » 23 Apr 2015, 10:35am

garygkn wrote:So for now I'll just soak the ends.


I'd recommend using a 'proper' penetrating oil like Plus Gas which 'penetrates' better than stuff intended for other/multiple purposes.

YMMV
--
Cheers
Barry

garygkn
Posts: 1378
Joined: 16 Aug 2008, 8:59pm

Re: drop out adjuster screws seized

Postby garygkn » 23 Apr 2015, 10:58am

Cheers Barry.
I'll see if I can get some of this locally.

daddig
Posts: 206
Joined: 25 Apr 2008, 9:01pm
Location: Tetbury
Contact:

Re: drop out adjuster screws seized

Postby daddig » 23 Apr 2015, 5:47pm

I removed mine in 1970Holdsworth by soaking in vinegar , warming with soldering iron . Came out with a bit of a struggle !
Mike G