Passerelle

[Bouba]

Looking like a good job, looks like a pain in the backside, but good work on getting it sorted.

Did you do any calculations to work out what sort of forces the varioua bits of metal would need to take, or just decide that x mm thick steel plate would do the job?

Sorry Julian, I forgot to answer your question. I couldn’t see how I could work it out with any accuracy, so I over specified. Seat of the pants engineering ?‍??

 

[Bouba]

Galling
Lessons learnt
I’ve done a few metal projects in my time but this is my first big stainless steel project. And I’m only a pretend engineer. So what have I learnt? Newly manufactured stainless steel nuts and bolts have tiny micro fibers between the threads, and as you rotate them, they heat up. They then cold weld.
It’s called galling. I’d never heard of the word or phenomenon until I put in the final nut.
I reckon that 20% of all my effort went into galling. I just thought it was my fault, perhaps I was damaging the thread. But when you can no longer tighten or remove a bolt there is only one option. Cut it off. But up inside the gunnel it was close to impossible.
And to make matters worse, the cure for galling is so simple. Just a dab of anti seize grease on the thread!

 

[Portland Billy]

Great Post and interesting read. - but now we're 'out' shouldn't it be a gangway rather than a passerelle?

 

[BruceK]

Nicely done Bouba!

 

[markc]

Great job, and thanks for the write-up! Very impressive

 

[Bouba]

Worky for me. Look at that waterline! Honestly Bouba, looks like a derelict you lazy git. Get the broom out and do a Christmas scrub.

Merry Merry old chap ?

There’s a reason for that, besides achy joints from installing a passerelle. When lockdown began we instructed the port to take the boat out of the water. Due to some misinterpretation, at the end of lockdown I found the boat still in the water. That meant that all my neighbors were sat on land with a clean bum, but I was able to go boating straight away (dirty bum and all)????

 

[vas]

well done mr Bouba, a bit complicated for my liking, but it works and that's all it maters!

V.

 

[Bouba]

well done mr Bouba, a bit complicated for my liking, but it works and that's all it maters!

V.

Hi Vas, as a project it was immensely complicated. But as a finished product it looks remarkably simple, even organic. It sits in the lazaret un intrusively, taking up no storage room or interfering with any function.?

 

[tico]

Nice job. And immensely satisfying when it all comes together.
Would it be worth sheathing the hydraulic hoses to prevent the UV from making them brittle?

 

[Bouba]

Nice job. And immensely satisfying when it all comes together.
Would it be worth sheathing the hydraulic hoses to prevent the UV from making them brittle?

That sounds like a good idea, what would you use?

 

[tico]

I used spiral wrap on mine , comes in translucent or black. Cheap enough to replace after a few years when it hardens.

 

[Bouba]

I used spiral wrap on mine , comes in translucent or black. Cheap enough to replace after a few years when it hardens.

If you mean the stuff you put over electric cable, I will get some from the Castorama next week?

 

[vas]

sorry I'm probably missing something but how would UV get into the lazarette where the pipework is?
does UV go through gelcoat and GRP?
if not, tbh I don't see the point!

 

[Sticky Fingers]

sorry I'm probably missing something but how would UV get into the lazarette where the pipework is?
does UV go through gelcoat and GRP?
if not, tbh I don't see the point!

Think these are the hoses he means?

 

[vas]

Ah, OK, thought they were discussing about the two high pressure pipes to the steering ram ?

 

[tico]

Yup, those are the ones. Yes , I used the spiral wrap that goes around cable. With care when applying the coils can be made to butt up against each other.

 

[tico]

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