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29er rudder pin seized |
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timeonthewater 
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Joined: 22 Mar 09 Location: United Kingdom, Arundel Online Status: Offline Posts: 60 |
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 Topic: 29er rudder pin seizedPosted: 19 Apr 12 at 8:51pm |
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Unfortunately trying to take off my rudder,( as I noticed some play in it and wished to replace the top gudgeon), it seems that the rudder pin is well seized in the alloy stock.
Despite anti seizing spray, hammers, bearing pullers on the rudder pin..it refuses to budge., it's bloody well welded itself. Although i'd love to shell our £130 for a new one, plus gudgeons and pin..I'm sure there's a solution out there? I've just learnt from the Musto skiff website and from Ovington boats, that they supply their universal alloy stock, now with plastic shims, to stop such alloy/stainless seizures. Any advice on pin removal.? My next plan is heating up the stock with a plumber's blowtorch and getting very physical with the pin and a hammer.
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Too many toys..not enough time
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JimC
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Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6660 |
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Posted: 19 Apr 12 at 10:17pm |
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I think I'd avoid the hammer: too much risk of swellling the pin further and blowtorch round glass fibre feels unwise. Warmth, penetrating oil and continuing pressure from a bearing puller would be my approach. Failing that try sawing the pin up to remove the stock from the boat and you can then deal with the rest on the bench.
Edited by JimC - 19 Apr 12 at 10:22pm |
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Contender 541
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Joined: 05 Dec 05 Location: Burton on Trent Online Status: Offline Posts: 1402 |
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Posted: 20 Apr 12 at 7:58am |
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Stupid as it sounds.......
Coca Cola and time will unsieze most things - Ideally you would imerse the siezed bit in coke, but just keeping it wet for a few days should do the trick
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When you find a big kettle of crazy it's probably best not to stir it - Pointy Haired Boss
Crew on 505 8780 |
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alstorer
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Joined: 02 Aug 07 Location: Cambridge Online Status: Offline Posts: 2899 |
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Posted: 20 Apr 12 at 8:35am |
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I take it you can't get a screwdriver in to just remove the whole thing?
Also, bit late for this, but I'd suggest in future always taking it off...
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-_
Al |
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timeonthewater
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Joined: 22 Mar 09 Location: United Kingdom, Arundel Online Status: Offline Posts: 60 |
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Posted: 20 Apr 12 at 10:18pm |
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I've taken the whole assembly off the boat, so have the stock, pin and gudgeons in one unit.
The vice on the pin and moving the stock has had no affect. Re the coke method, full fat coke or coke max? Methinks a new rudder stock would be the answer if all else fails!. Jim, is the stock glass fibre ? |
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Too many toys..not enough time
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timeonthewater
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Joined: 22 Mar 09 Location: United Kingdom, Arundel Online Status: Offline Posts: 60 |
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Posted: 20 Apr 12 at 10:32pm |
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Jim
I'm tempted go all out and go carbon dagger blade and cassette rather than go for the same kit from Ovi's. Simon McGuire's carbon stock looks very good, any others you may recommend? It's for a project boat, not a 29er I might add!
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Too many toys..not enough time
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Contender 541
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Joined: 05 Dec 05 Location: Burton on Trent Online Status: Offline Posts: 1402 |
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Posted: 21 Apr 12 at 5:18pm |
Full Fat is the best
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When you find a big kettle of crazy it's probably best not to stir it - Pointy Haired Boss
Crew on 505 8780 |
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JimC
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Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6660 |
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Posted: 21 Apr 12 at 5:56pm |
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I honestly don't know what the 29er stock is made of but have half a memory its alloy...
The critical component in the CocaCola is the phosphoric acid - the same stuff you get in so called rust eating compounds, so it probably doesn't make much difference whether you use diet or not. I don't know how much effect it will have in this case, but unlikely to do any harm. Stocks - I'bve always made my own so have no idea whose are good. The article on the Cherub web site started out as how I did my last one... Edited by JimC - 21 Apr 12 at 5:59pm |
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Contender 541
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Joined: 05 Dec 05 Location: Burton on Trent Online Status: Offline Posts: 1402 |
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Posted: 21 Apr 12 at 9:33pm |
Indeed Jim - the Phosphoric acid is the major component (It really does not matter which to use) I once saw a Radial drill that had been in a field for 20 years bought back to life with nothing more than a can of coke and time (It was an original machine tool of a victorian pumping station and the owners tracked it down. Once it had been bought back to the pumping station, the drill was bolted to the floor and tension chains attached to the radial arm. A can of coke was poured down the pillar. 3 months it took, but eventually the chains went slack - only took another 2 years to get working after that!!)
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When you find a big kettle of crazy it's probably best not to stir it - Pointy Haired Boss
Crew on 505 8780 |
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timeonthewater
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Joined: 22 Mar 09 Location: United Kingdom, Arundel Online Status: Offline Posts: 60 |
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Posted: 03 May 12 at 7:12am |
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Well after a week and a bit of exposure to it's diet of Coca Cola, I can report sadly that the experiment failed miserably. Although the large aluminium saucepan and alloy stock look a little brighter.
The stainless pin is well seized and galled in, even trying to remove it with another stainless pin and mark 1 club hammer did nothing but to destroy the stock. Unfortunately the way the boat is designed, you can't remove the rudder or pin, as it is held captive by the flange beneath the lower gudgeon. So a new rudder assembly required.
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Too many toys..not enough time
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