Freeing up aluminium tube seized in tube (SeaKem?)

hi guys
Aluminium question ... (anodised alum if that makes any difference)
THe back stay for my outriggers has a tube the slides inside a larger tube (shown below) - the idea being you can lower them by removing a locking pin to get under bridges etc
THe back stays have been sat on their sides for a few years and the tubes appear seized/corroded together.
Any ideas on what i can do to free them up

Heat?
Acetone and brake fluid?(found online..)

cheers

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Faulkner Family's picture

Posts: 17223

Date Joined: 11/03/08

 Have you tried inox . Used

Mon, 2022-03-14 10:33

 Have you tried inox . Used some on similar circumstance a while ago. Give it a while to soak in . Gentle taps with a hammer 

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RUSS and SANDY. A family that fishes together stays together

Posts: 5419

Date Joined: 18/01/12

 Heat is likely your only

Mon, 2022-03-14 10:47

 Heat is likely your only option-the oxidation in between will make it very hard especially if you are unable to twist it.
The bottom one doesnt look like aluminium though?

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sea-kem's picture

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Date Joined: 30/11/09

 Yep my thoughts Rob, light

Mon, 2022-03-14 12:40

 Yep my thoughts Rob, light heat on there. 

I do a lot of oxidised 'removal' for a client and it's usually a  5 second job. 

Try  soaking etc Clint and if no luck give me a call. I'm away end of the week though for a week. 

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Date Joined: 18/01/12

 Point to note

Mon, 2022-03-14 15:59

 Point to note
If you havent used heat on ally before, draw a texta line on it where you are heating.

When the line disappears, stop heating, it will melt if you are waiting for any redness.

Try it, if wont move quench it and try

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 Give a man a mask, and he'll show you his true face...

 

 

The older you get the more you realize that no one has a f++king clue what they're doing.

Everyone's just winging it.

 

sea-kem's picture

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Date Joined: 30/11/09

 I've played with it a bit

Mon, 2022-03-14 16:21

 I've played with it a bit and know how quickly it collapses.

Old foreman showed me the texta trick. 

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Love the West!

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.

Thu, 2022-03-17 13:16

 ha yeah sorry I thought I tacked that on the OPs comment not yours and mine

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 Give a man a mask, and he'll show you his true face...

 

 

The older you get the more you realize that no one has a f++king clue what they're doing.

Everyone's just winging it.

 

sea-kem's picture

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Date Joined: 30/11/09

All good mate, it's a bastard

Thu, 2022-03-17 15:24

All good mate, it's a bastard of a material to work with sometimes.

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pelagicyachts's picture

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Date Joined: 23/02/11

thanks guys - yep both are

Mon, 2022-03-14 11:20

thanks guys - yep both are alum - anodised to look shiny
I was thinking of a bit of caustic soda as well - although that may just eat the good metal and leave the bad....

scubafish's picture

Posts: 887

Date Joined: 15/08/12

Try

Mon, 2022-03-14 11:40

CLR and leave overnight.
Can put a plastic tube over the pipe slightly larger than the dia of the largest part of the pipe and put a hose clamp around the bottom to form a cup tighten clamp fill with CLR overnight/day or two.

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davewillo's picture

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Date Joined: 08/09/16

 I think this might be the

Mon, 2022-03-14 12:34

 I think this might be the answer. I've used CLR to free a few things over the years.

Swompa's picture

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Date Joined: 14/10/12

 used to happen very

Mon, 2022-03-14 12:01

 used to happen very regularly on our caravan poles. Regularly sprayed them with silicone spray...

pelagicyachts's picture

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Date Joined: 23/02/11

thanks guys - forgot about

Mon, 2022-03-14 13:35

thanks guys - forgot about CLR - will try on one tonight before hitting it with heat as it may damage the anodising

cheers

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Date Joined: 14/02/22

 after clr i would try any of

Mon, 2022-03-14 14:31

 after clr i would try any of the penetrating lubricant products mentioned (like inox and similar)

pelagicyachts's picture

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Date Joined: 23/02/11

i got it apart with heat -

Fri, 2022-03-18 07:57

i got it apart with heat - thanks for the tips - there was actually a plastic sleeve between the two tubes, the heat melted that which allowed them to come apart - now i need new sleeves! grrrr!

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Date Joined: 19/06/14

Boats

Fri, 2022-03-18 08:18

It's never, ever ending.

To keep a boat in A1 condition I'm wondering what the real hours on the water v hours in maintenance is?. I'd say it's close to 1:1. 

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davewillo's picture

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Date Joined: 08/09/16

 Certainly for bigger boats,

Fri, 2022-03-18 10:53

 Certainly for bigger boats, especially penned boats. I guess the upside there is you can spend all weekend staying on the boat for not too many hours upkeep. The downside is in winter when you need to maintain but rarely use it. That's boats for ya!