How the hell do I remove this Hood foil pin?

demonboy

demonboy

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I'd been warned about these before but the day has finally come...

20140306_151733.jpg


Link here if above image doesn't display. https://www.dropbox.com/s/2jbhv3qi5shhszr/20140306_151733.jpg

I've spent the best part of an afternoon trying to remove this brass fitting from my Hood forestay foil but to no avail. I can't understand how this was designed to be removed. If anyone has any pointers please do let me know. Thanks
 
sailorman said:
It may be that the insert / jointer stops the button depressing, it might be a junior hacksaw between the sections to cut the strip the buttons are attached to
Click to expand...

Yep. Also, because I'm in a yard and need to repair the last foil (left in picture) anyway, I could slice from the centre/end of the foil to the pin, peel it back to release the pin, and then weld the slice back together. A bit excessive but it really won't budge otherwise.
 
Have to say they look exactly like the buttons that hold my oars together, which are pushed down to release. Is the whole lot simply corroded together? Try gentle application of some acid, maybe oxalic or dilute hydrochloric, assuming the deposit holding everything together is the usual mixture of carbonates. I don't think that acid will harm the aluminium but go carefully.
 
demonboy said:
Yep. Also, because I'm in a yard and need to repair the last foil (left in picture) anyway, I could slice from the centre/end of the foil to the pin, peel it back to release the pin, and then weld the slice back together. A bit excessive but it really won't budge otherwise.
Click to expand...

I think I'd drill the pins out before I did that.
 
vyv_cox said:
Have to say they look exactly like the buttons that hold my oars together, which are pushed down to release. Is the whole lot simply corroded together? Try gentle application of some acid, maybe oxalic or dilute hydrochloric, assuming the deposit holding everything together is the usual mixture of carbonates. I don't think that acid will harm the aluminium but go carefully.
Click to expand...

I tried this method, very successful. I had an old VHF aerial with a stainless steel connection into an aluminium bracket. It was immovable, even with a 10" adjustable, due to carbonate salts in the space between the two. After removing the nut and washer I poured a little hydrochloric acid onto the deposit and waited a few minutes. The deposit fizzed but no reaction with the stainless or the aluminium. The fitting then came out easily.
IMG_0740_zps4d5a2e38.jpg

Inspected afterwards, no damage to either metals.
 
demonboy said:
I'd been warned about these before but the day has finally come...

20140306_151733.jpg


Link here if above image doesn't display. https://www.dropbox.com/s/2jbhv3qi5shhszr/20140306_151733.jpg

I've spent the best part of an afternoon trying to remove this brass fitting from my Hood forestay foil but to no avail. I can't understand how this was designed to be removed. If anyone has any pointers please do let me know. Thanks
Click to expand...
I uspect that you are supposed to depress them and then slide the stuff apart. However! corrosion, verdigris etc etc.
Ive just done a job on my mast, SS pins in alloy spreader tips, aargh! Bottom line you mess with them! Eazing oil, tap them, gently, then harder, get a heat gun on them. I ended up with a two legged puller, screwed up hard, propane gas gun, lots of easing oil and judicious tapping with a hammer and punch. It was a combination of everything that got them out with out damaging everything. There is no easy answer, just lots of little things combine to shift them
Stu
 
When unable to immerse the whole sorry seizure, I always fancied rigging up a hospital drip feed over the ' patient' and buggering off to the pub/overnight/a few days/get on with something else
 
skipper_stu said:
I uspect that you are supposed to depress them and then slide the stuff apart. However! corrosion, verdigris etc etc.
Ive just done a job on my mast, SS pins in alloy spreader tips, aargh! Bottom line you mess with them! Eazing oil, tap them, gently, then harder, get a heat gun on them. I ended up with a two legged puller, screwed up hard, propane gas gun, lots of easing oil and judicious tapping with a hammer and punch. It was a combination of everything that got them out with out damaging everything. There is no easy answer, just lots of little things combine to shift them
Stu
Click to expand...
I think these links are a once use item
 
Blueboatman said:
When unable to immerse the whole sorry seizure, I always fancied rigging up a hospital drip feed over the ' patient' and buggering off to the pub/overnight/a few days/get on with something else
Click to expand...

That's pretty much what I've done.

The brass bolt thing is not corroded. I have applied a great deal of pressure to it thinking this might be the case but there is absolutely no give in it. I can see how this bolt would have been a great solution in securing the two foils together, and to do this I suspect that it really is a 'use once' connection. I can see how it would have slid on and locked in without any chance of it ever coming undone again!
 
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