Nylocs or not?

[thinwater]

No, not bad information, a receiver of dedicated studies into reliable securing for the oil and gas injury in order to stop failed joints and release of hazardous materials.

DIN testing for vibration, its an advert for Nordlocks which hold up a lot of equipment

That's funny.

They installed the double nuts backwards, a mistake no engineer would make (read double nut science or any similar link). They did that intentionally. It seems that was ... and ad. Not sayin' it is not a good product, only that we are stretching their case to the point of humor as it relates to bow cleats..

We are talking about non-vibrating parts of a boat. Heck, by this measure the wheels should fall off my car. They haven't.

 

[Deleted member 36384]

That's funny. They installed the double nuts backwards, a mistake no engnieer would make. They did that intensionally. It seems that was ... and ad.

What the Pal Nut or the two nuts of the same thickness? I said it was an advert, you can read? If you are referring to the two nuts of the same thickness, you are wrong again. If you are referring to the Pal nut, thinking it is a lock nut, you're wrong again.

I have posted that article, which you wrongly linked to, many times in this forum. The half nut is just as poor as a locking nut.

 

[penberth3]

What the Pal Nut or the two nuts of the same thickness? I said it was an advert, you can read? If you are referring to the two nuts of the same thickness, you are wrong again. If you are referring to the Pal nut, thinking it is a lock nut, you're wrong again.

I have posted that article, which you wrongly linked to, many times in this forum. The half nut is just as poor as a locking nut.

You're right there. They used two full nuts - not a nut and lock nut. Thinwater needs to watch it again and pay attention.

 

[reeac]

My first encounter with self locking was when I examined the V8 in the 1957 American Ford Fairlane 500 that I bought when over there. The tappet adjustment was via self locking "bolts" on the rockers. I thought that was a pretty severe test of the concept. As a thread drift the practice was to have the engine idling when adjusting and to use a feeler gauge which you slid in and out as you applied a spanner to the bolt. The self locking came in useful as only one spanner was needed.

 

[Daydream believer]

As a vibration solution for bolting it is the worst solution you can apply. Do your own research, plenty of information available to show that. No one who takes reliable fastening seriously would use double nuts.

Engineers have been bolting stuff together for years. Just go to a museum & look at the double nuts used on the old steam engines over the years. Are you telling us that they did not take fastening seriously? Nyloc may not have been available then, but I would respectfully suggest that the engineers of old certainly knew more about bolting things together than you might think.
Of course they did have castelated nuts when nylock were not around

 

[Caraway]

Depends how it is cut to length.. Monday, while waiting for the surveyor, I thought I would remove a couple of cracked rope clutches. Seems the 'workers' at Jeanneau cut the excess off with bolt cutters... leaving distorted thread ends. Going to need another pair of hands or a dremel to get them off, as the nuts are in the aft cabin, out of reach of the heads on deck.

You don't cut bolts to length with bolt cutters. That is very poor. That means Jeanneau are a very shoddy manufacturer.

 

[Caraway]

My first encounter with self locking was when I examined the V8 in the 1957 American Ford Fairlane 500 that I bought when over there. The tappet adjustment was via self locking "bolts" on the rockers. I thought that was a pretty severe test of the concept. As a thread drift the practice was to have the engine idling when adjusting and to use a feeler gauge which you slid in and out as you applied a spanner to the bolt. The self locking came in useful as only one spanner was needed.

Vauxhall copied the notion. Bloody awful.

 

[WoodyP]

Might I humbly suggest that if the cleats were happily fixed 30 years ago with single nuts, then that might suffice for the next 30? Chill, it's only a cleat on a boat.

 

[Poignard]

Might I humbly suggest that if the cleats were happily fixed 30 years ago with single nuts, then that might suffice for the next 30? Chill, it's only a cleat on a boat.

Yes some of my deck fittings secured with single nuts have not been off during the 24years I have owned my boat and probably not since she was built 54 years ago. If for, some reason hard to imagine, any did start to work loose I would soon notice and nip them up long before the fitting fell off.

 

[ghostlymoron]

I always cut the bolt to length. Long, exposed thread is not good.

Good practice is 2-3 threads showing.

 

[Caraway]

I usually aim for 2, but it's not a science ?

 

[RichardS]

As a vibration solution for bolting it is the worst solution you can apply. Do your own research, plenty of information available to show that. No one who takes reliable fastening seriously would use double nuts.

That's simply not correct. My 50 years experience trumps your internet "facts" every time.

Richard

 

[DownWest]

You don't cut bolts to length with bolt cutters. That is very poor. That means Jeanneau are a very shoddy manufacturer.

I wasn't exactly impressed, they looked original. Going to use nylocs when refitting.