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Home >> Technical >> Worn Gudgeon
21/08/2017 23:31:00

Steve Marshall
Posts: 8
My rudder gudgeon (lower rudder fitting) has worn to a large oval and needs replacing.  I see that as well as the standard gudgeon as fitted, Seasure also supply one with a carbon bush like the one fitted to the boat (upper rudder fixing). Would that wear less rapidly than the standard gudgeon? Has anyone had experience of replacing the standard gudgeon on the rudder with one with a carbon bush? And would it still be class legal?
 
Steve
962 



22/08/2017 09:32:00

Jerry Wales
Posts: 15
Steve, its fine to change the "rudder hangings" as the rules calls them.   I have fitted the 10mm versions for a good few years and I have not felt the need to replace due to wear.  I am pretty sure you can replace the insert so even if it does wear its an easy and cheap fix.



22/08/2017 11:37:00

Steve Marshall
Posts: 8
Hi Jerry, thanks for your response. Did you go for the 10mm versions because the 8mm ones keep failing? I have found that the pintel on the boat lasts about 2 years before it fractures at the hole where it's pinned to the fitting (within the aluminium part). And do you use the version with the carbon bush? 



22/08/2017 14:10:00

Jerry Wales
Posts: 15
Yes Steve, I broke a couple of the of the 8mm versions, as you mention where its pinned.  Yes I use the bushed versions.   
 
In case it helps.   I only replaced the lower fittings.  The hole placement on the upper rudder fitting are unique to the RS supplied rudder fitting and stock but the lower ones are interchangeable.  
Should you wish to change both the rudder fittings it is not a big job to drift the holes on the 10mm upper fitting and perhaps use a three hole fitting and drill the stock fort the third hole.   I have made that mod to a spare stock but have not got around to using it (its a spare). 
 



22/08/2017 16:29:00

Steve Marshall
Posts: 8
Thanks Jerry. Do you know if the 8mm bush can be replaced with a 10mm on the same gudgeon? And does the 10mm pintel - boat side - have differently placed screw holes?  That would solve the loose screws issues. I am on 6mm screws with rawl plugs at the moment! 



22/08/2017 20:23:00

Jerry Wales
Posts: 15
Steve, I don't know if you can swap the bushes, but it does not feel likely, but don't know.   you can swap the transom fittings, the hole locations are the same.



22/10/2019 10:41:00

GuyB
Posts: 4
My lower gudgeon failed some time ago. I replaced it by an 8mm one from RS, together with the upper one that was bent in the process.
Works well but I have some play in the assembly, due to ovalization of the female parts, and I am considering changing them (current ones are not bushed).
 
Are the lower gudgeons failing regularly ?
What is the new boats standard ? 10mm ? 8mm with bushes ?
 
Guy



24/10/2019 20:26:00

GuyB
Posts: 4
 Anyone here ?
Guy



24/10/2019 20:37:00

Spike Daniels
Posts: 10
Most people are glued to the Facebook page.https://www.facebook.com/groups/1485113635132398/?ref=share



25/10/2019 11:42:00

Jerry Wales
Posts: 15
Guy
 
"Do the lower gudgeons fail regularly?"   It probably depends on how much and where you sail the boat.   I have had several lower fitting failures.  They are affected by corrosion, particularly if the boat is used on the sea or kept or kept in a saltysandysunny boat park.
If you simply want to eliminate some the play it might be possible to loosen the screws of the transom fittings and twist them slightly, there might be just enough movement to misalign them a little which will at least for a while remove the play.
New boats use a different rudder stock and transom fittings.
It's probably not unreasonable to consider the transom fittings as a service item that is prudent to replace every few years depending on use and location.  I and I think others have replaced the lower fittings with the bushed 10mm versions.   But having made that mod I then had a failure of the rudder stock, but again these parts are only going to last so long so they need inspecting regularly to check for corrosion and wear.
As a group, dinghy sailors are not very good at preemptive maintenance  (if it's not broke don't replace it).  Some fittings have a hard life.  The rudder fittings are reasonably easy to replace, on balance the easier solution is probably to replace when they start to look like they might be tired.   Changing the lower fitting to the 10mm is easy and worth it and a little twist will remove some slack, but keep an eye on the stock itself particularly corrosion around the bolts that attach the fittings to the stock.



25/10/2019 13:41:00

GuyB
Posts: 4
Thanks for your reply Jerry. I do not like FB and have no account.
In fact, I live in Cannes and my boat stays on the beach all year long. Weekly sorties and salt water. No winter break. Hot temperature during summer. Worst case for corrosion then ... although I rinse with fresh water after each sortie. 
I try to perform preemptive maintenance as much as I can, as I do not want a vital part to fail when sailing alone in winter ... and my 798 is quite old (although in good shape) ! Basic safety.
I already had to change the rivets attaching the tiller to the rudder stock. Replaced them with 6mm ones, to be safe.
I will consider replacing the lower fitting with 10mm one.
Guy



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