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Rudder, Rudder Post and Rudder Tube Problems and Repair

Hurley 20 Rudder Repairs

Darren has sent us a sequence of pictures showing the repair of his rudder and rudder post He says:

"You can see how little of the original rudder post remained, the cut from the narrow grinder blade, the rudder split in two, the rust inside from some water ingression (although not as bad as some others have seen). You can also see the interesting trick of Second Wind standing on her tip toes to make enough room to get the rudder back in (I tried to dig a hole, but just short of the required depth there was a small boulder). I also added a zinc (turned down on the lathe) to do double duty to protect from further corrosion and to act as a spacer to remove play in the rudder. After the photo shown I had to bring the zinc back to the lathe one more time to shape it so it fit better against the hull. On the topside of the rudder post I added a delrin disc which is thick enough to pull the zinc right up against the hull which removes all the vertical play in the rudder."

 
Old rudder Close-up of split rudder Material rusted away from rudder post Split rudder around perimeter  
   
Rudder split in half and post removed Rust in rudder blade Lots of clamps    
   
Zinc collar On her toes New rudder in place    

New Hurley 24 Rudder

These pictures show a new Hurley 24/70 rudder being fitted by Maurice Huffy of Blaxton Boats

Hurley 22 Rudder Problems

Hurley 22 leaking rudder tube. Leaking rudder tubes and glands are an issue on Hurley 22 yachts. The Hurley-built 22 had a rudder tube of galvanised steel that would rust and fail with foul consequences. This is a common problem and the weakest link in otherwise sound boats.

You need to cut the tube out with an angle grinder from inside of the vessel, crawling under the cockpit and squeezing past the cockpit drains. This is not a pleasant job but will be helped by creating an inspection hatch with cover at the aft end of the cockpit sole. The tube should be replaced by an item of stainless steel, cut to length and threaded at each end to allow for a skin fitting nuts to secure. These skin fittings should be reamed out to create a rudderpost bush at top and bottom.

However, your friend might have a rudderpost with stuffing box gland? These are easy to stop leaking just by re-packing with cotton wadding and grease.

Or you could use the easier method that later Hurley 22s had. That is a PVC hose between two bronze skin fittings that are reamed out to 1" to act as bushes. The hoses are held in place by hose clips.

Rusty rudder tube - Hurley 22
Rusty rudder tube - Hurley 22
Hurley 22 - weak GRP in rudder area - from Harmut Dietrich
Hurley 22 rudder drawing
Hurley 22. Rusty rudder tube inside boat - normal
Hurley 22 - rusty rudder tube
Hurley 22 rudder tube modified with PVC hose
 
Hurley 22 rudder tube modified with PVC hose
 
Hurley 22 - rudder tube access hatch

Hurley 22 Replacement Rudder Tube

Work carried out for Ben Hillwood-Harris by Ryan at The Metal Clinic Ltd, Unit 6 Eastlands Boat Yard , Coal Park Lane, Swanwick Southampton S031 7GW. Tel: 01489 582264. www.themetalclinic.co.uk

Rudder tube

Material:
316 grade stainless steel

Dimensions:
Tube Length 840mm

  • To allow approx 10mm at either end for external s/s nut skin fittings

External Diameter 42.2mm with 4.5mm wall thickness
Internal Diameter (with nylon bush) 28mm

  • (plus due to the nature of my rudder stock, a nylon bush with an internal diameter of 25mm was required at the base of the rudder tube)

Length of thread along tube (both ends) 100mm
4 s/s nut (as skin fittings)
4 s/s washers (as skin fittings)

Description

My rudder tube was the original (I think) and was completely rusted through; Nick Vass who surveyed the boat was surprised it hadn't sunk. It appeared that somebody in the past had made some repairs, as there was some epoxy/glass fibre seal internally at the hull end of the tube. I managed (through an inspection hatch) to break the tube and release the top half on the old tube through the rudder tube hole in the deck. The bottom half wasn't half as easy. I had to carefully grind the old section of tube and skin fitting nut (bronze) but eventually it came free, with out damage to the hull!

I took the whole rudder and stock to the fabricator to ensure that the fit was good. Ryan turned the job around fairly quickly, a week or so once he had sourced the tube.

Because my rudderstock had various 'collars' (i.e. its diameter wasn't uniform ranging from 25mm - 28mm approx) Ryan had to split the bush into two parts, the bottom (hull end) was also split into along its length to allow fitting as the rudder and stock was refitted. Click here to see a drawing of the repair

Hurley 24 Rudder Post Replacement

Old, rusty, galvanised rudder tube New, stainless-steel rudder tube

See also the FAQs page