"enough already." ??
if you explain too briefly, some peeps don't understand.
ie "3 cents extra moly" should have been enough to explain every single
thing i typed, that should have been the whole conversation, the entire thread. but some people needed more. they didn't understand SCC. even rigging
companies didn't understand, they also kept asking more and more questions.
ie chlorine is a catalyst - simple chemistry - a catalyst is un-used in a reaction, and so keeps destroying forever. this is different to 316 in fresh water
. and some people didn't understand that either.
but then if you explain too much, peoples eyes glaze over.
so i tried to explain in the absolute minimum. the scientific stuff goes on forever, and this was in my estimation - a good enough short summary for most people to have a firm understanding of the true reality.
some people still do not understand, and it shows clearly in their posts.
companies didn't understand, they kept asking more and more questions, and then? still didn't understand.
the rig is the engine
of your boat.
somebody has just shown you how to get many times the performance out of it; in all reality; infinitely better safety
, and all for lower cost.
and what was your reaction to this? a $7 32550 never fail chainplate versus a $200 316 guaranteed to fail chainplate.
weird. other people here think this is astounding. revolutionary stuff by a brilliant researcher. the winds of change that you were priviledged enough to see the begining of and to be a part of
( admitedly as part of an angry mob
booing and dragging down, but non the less, still a part of
are you sure you understand what has just happened?
a new never fail engine
design for cheaper and safer than your current
primitive dangerous rubbish.
or are you disinterested in the thread topic?
but can you point me to a website where I could actually purchase
chain plates, bolts, screws and washers, etc.,
no. there is currently no single
one stop shop doing this.
"Could they be combined with the 316 parts
on my boat? I cannot afford to strip my boat of all stainless and replace it with something else all at once, so what would the chemical interaction between the two metals be? Safe or not safe?"
yes, minimal galvanic coupling. any electro-corrosion will be powered by acidic 316, not passive 316 (good intact chrome oxide surface) (ie crevice corrosion
- ie a split, a big invisible sour crack in a bolt), so if it is any consolation, only the 316 part that was going to fail from crevice corrosion
anyway will fail.)
however such 32550/316 effects are very very minor. almost non existant, as they are almost exactly the same metal. so no worse than using titanium. i'd risk it as we're talking very low voltage and decades here. as you already said, it is not 100% perfect to couple dis-similar metals in salt water
, but i'd do it, but only for higher alloys or titanium.
replacing a few parts
at a time is a very sensible way to do it.
"but are actual parts available of these alloys you speak of? "
a small new zealand
rigging fittings manufacturer and a small chinese rigging fittings manufacturer have said they'd make them for me (as well as my local cnc guys). (i'm fairly sure i'm repeating myself here.)
the small chinese rigging fitting company that will undoughtedly end up winning the quoting and making the batch for me could very easily make a bigger run and keep stock on hand if other guys want some. they want new business.
probably cost the same as 316 fittings, but you may save 300% as you'd be buying
over the internet
and direct from the factory, and not a retail shop.
take a swageless fitting to a local CNC shop and get a quote, just so you know the price
difference, and i'll send you chinese guys final quote when they finally finalise. i told them there was no rush.
"Well done Poo."
"To implement his findings will take some effort by the reader and discussion with smaller engineering workshops but very achievable"
true; but perhaps not even that much extra effort, as the two small rigging fitting manufacturing companies that have said they'll do it for me could easily continue their production. be actually cheaper for them to make more fittings.
so all you really have to do is put your hand up.
I think a brief recap of the good stuff is in order;
Different solutions posted so far:
Unstayed masts - surely the best solution, as it bypasses the entire problem completely, and forever.
Galv and tar - great solution - as steel
is very tough. last for a very long time if you can keep the tar on the ropes and fittings.
Better Alloys - you have to visit a small engineering firm and order them yourself though.
UHMWPE ropes and composite chainplates - a fairly common method. cheap
, easy as. Dynex dux et al.
Replacing 316 bits as they fail - most do exactly this.
Buy a dye penetration kit - real cheap! and do it often, every 5 months max?
Design redundancy into the rig - solent stays etc
Titanium - great stuff. (except for ropes - fatigue strength gets real low)
Overwhelmingly? the vast majority of posters seem content to stick to 316.