Recent posts

#31

Bavaria Yacht Help! / Re: Advice needed on rusty fue...

Last post by SYJetzt - March 31 2026, 02:49

The anti siphon valve only needs  maintenance. Take a look in the manual, its easy to do.

#32

Bavaria Yacht Help! / Re: Advice needed on rusty fue...

Last post by SteveB62 - March 30 2026, 22:38

Thanks again symphony2 another good suggestion. I have found the source of the problem, the anti siphon/vacuum valve is dribbling water at idle and supporting it out at anything over 1500rpm. Of course this is going over the fuel pump etc on the starboard side of the engine. Will install a new anti siphon valve and hope this fixes the problem.

#33

Modifications & Equipment / Propellor cone and prop. loss

Last post by Rapita - March 29 2026, 14:24

I have read various posts here, also a recent article in PBO about propellor loss.Apparently VP now supply a new cone and locking bolt with a metal tab to lock the bolt in place,about £100.Apparently making it more secure.
Our boat is a B34 ,md 2030 powered with sail drive.

I read a previous ingenious post here about drilling the cone and bolt to fit a roll pin which provides locking security.

I just noticed on another site that Orbitrade sell a lock washer (part no.19367)to fit under the cone with the tabs available to bend up into cut outs in the cone.

Do you think this would work on a saildrive?

Would the tabs cause more chance of picking up debris?

Thanks in advance of any opinions

#34

Bavaria Yacht Help! / Re: Advice needed on rusty fue...

Last post by symphony2 - March 29 2026, 09:11

You may want to check the outlet spigot of the exhaust muffler as this tends to corrode leaving pinholes that leak seawater when the engine is running. That ends up in the bilge under the engine.

#35

Bavaria Yacht Help! / Re: Advice needed on rusty fue...

Last post by SteveB62 - March 29 2026, 00:59

Thanks for the answers really appreciate the detailed response. I'm not sure how seawater has reached the fuel pump, perhaps evaporated seawater... I will clean these up with my Dremel and use rust converter plus paint.
I suspect the sail drive ring bolts are vibrating loose and nipped them up yesterday about a quarter turn on each one on the port side. There has been about 100ml of seawater in the engine bilge after a day sail with 1hr motoring. I clean this up after every sail so hopefully the problem is resolved for a period of time.

#36

Bavaria Yacht Help! / Re: Grounding of the rudder po...

Last post by SteveB62 - March 29 2026, 00:43

Thanks for the clarity on this question, very pleased to hear there is nothing needed. Just had new anti foul done with a 30cm coating of Jotun aluminium surrounding the rudder.

#37

Bavaria Yacht Help! / Re: Advice needed on rusty fue...

Last post by symphony2 - March 27 2026, 23:59

See my reply to your other question. The anode on the hull should show minimal depletion as it is not in a galvanic cell. The saildrive anode should show some signs of depletion, although this varies from location to location. Make sure there is good electrical contact through the mounting bolts and the face of the housing. Check for continuity. As already suggested the corrosion on the engine and drive bits inside the boat are result of damp salt water  - maybe a leak at some time in the past. The verdigris on the intake is quite normal and should clean off easily.

#38

Bavaria Yacht Help! / Re: Grounding of the rudder po...

Last post by symphony2 - March 27 2026, 23:51

There is no point in grounding the rudder post. It is not galvanic corrosion a the aluminium post is not in contact with anything else metallic underwater. One possible cause of pitting is antifouling paint too close to where the rudder exits the hull. There should be a 10cm circle of non copper based AF such as Trilux around that area. The "anode" is not strictly an anode but the ground for the AC circuit.

#39

Bavaria Yacht Help! / Re: Advice needed on rusty fue...

Last post by Yngmar - March 26 2026, 11:59

Rear saildrive mount: That's minimal corrosion. Wire brush it off, apply rust converter and some paint. Absolutely uncritical.

Hose tail on engine seawater intake from saildrive: Not severe, can clean up and monitor or just replace the hosetail, they're cheap enough. Probably it seeped a bit, causing that.

Fuel pump: That's not nice. Looks like seawater got there. Need to be very careful with that and keep your engine clean, especially since on a hot engine corrosion is accelerated. Apart from the heat exchanger, engines are car parts, not boat parts and they cannot handle seawater exposure. I'd carefully clean up the corrosion, probably removing the fuel lines (which means bleeding air out later) and then applying rust converter and paint on the rusty bits.

I'd also be concerned about the clamping ring on the saildrive rusting. Those things are notorious for pooling any seawater spill in the rubber ring, which doesn't harm the rubber but the clamping ring that holds it corrodes. It'll need sorting or replacing when the time to change the diaphragm comes, but until then I'd clean up around it and treat it too.

#40

Bavaria Yacht Help! / Grounding of the rudder post

Last post by SteveB62 - March 26 2026, 01:51

Question on grounding of the anchor post, I have a 2014 C37 and the anchor post is not grounded which I believe is the factory standard approach. I have recently replaced the lower rudder bearing and noticed some minor degradation of the rudder post. Whilst it is easy to run a grounding cable from the rudder post to the hull anode which is located under the starboard bunk, the question is where do you attached the cable on the rudder post?
PS. Please note that the missing gaiter is being replaced AND the autopilot arm was reinstalled AFTER the quadrant was reinstalled in the correct position (as per the Jefa information sheet informing us that several B37s and B41s were installed incorrectly at the factory - mine being one of them!!)