Posted:Hello!

When making poi that require eyebolts (cathedral, deathstar, moon blaze e.t.c) you need to keep the nuts from undoing. I've heard a lot of people refer to what is called 'locknuts'. I've looked into these, but all I can find is Nylon Locknuts, and I was wondering is this what people mean? Wouldn't the nylon just melt?

-Rell.


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Fire_Moose
SILVER Member since May 2007

Fire_Moose

Elusive and Bearded
Location: Scottsdale, AZ, USA

Total posts: 3597
Posted:i think locknuts are the nuts with ridges on one side and they are used with lock washers. Lock washers are small washers that are split at one point and one side is raised a little mor then the other. When used together i BELIEVE the raised part catches onto the ridges of the nut and locks it from moving.

O.B.E.S.E.

Owned by Mynci!

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marco


enthusiast
Location: uk

Total posts: 328
Posted:There are fully metal graded lock nuts available, these are the ones you need to be using if your considering using lock nuts with fire, the other option is to counter tighten two nuts together and score / distort the thread below.

mark


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FireTom


Stargazer


Total posts: 6650
Posted:Harr - distortion - one way poi, but nice solution.

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Posted:Ahh yea, that makes sense Poje.

I've used two nuts before, but I don't really trust just them to do the job...

What do you mean Marko by distorting the thread below? Do you mean the wick side of the nut, or the other side?


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Phyrecat


member
Location: Melbourne, Victoria, Australia

Total posts: 17
Posted:Rellizate, I think he means scoring the thread so the nuts cant unscrew themselves. The other option would be thread lock - I'm sure you can get hi temp stuff that is used in cars - just spread it on the thread, tighten, and leave to set. it wont ruin the thread, and you'll still be able to unscrew it if you need to. Another possible solution would be two nuts, one with a reverse thread. so you tighten one nut, then the other nut screws on, but turns anticlockwise to tighten. they'll tighten against each other! Only problem is, they're pretty hard to come by....

There is no better way to teach yourself concentration than learning staff next to a topless female.

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Posted:Hmm thanks phyrecat. Couldn't you just use a normal nut upside down to get that effect though?

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Mr_Joe
BRONZE Member since Aug 2008

Mr_Joe

Part-time genius
Location: , Netherlands

Total posts: 59
Posted:Not quite, you can't put nuts on the wrong way round anyways.

You can however just tighten a second nut against the back of the first for extra security.


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Posted:What do you mean? Can't you? So it's not doing that when you turn the nut upside down and screw it on?

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Phyrecat


member
Location: Melbourne, Victoria, Australia

Total posts: 17
Posted:LOL rellizate biggrin biggrin biggrin no, the way you put a nut on does not change the way the thread goes :P

There is no better way to teach yourself concentration than learning staff next to a topless female.

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Posted:Ahh ok. Hmm i'll look into threadlocker... Isn't there a type of nut which goes along with a spring washer to lock the nut in place?

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Phyrecat


member
Location: Melbourne, Victoria, Australia

Total posts: 17
Posted:yeah, you can buy nuts that have a spring washer attached, but its easy enough to just buy some spring washers to go with the nuts you already have. It makes no difference whether you use the attached washers or seperate ones.

There is no better way to teach yourself concentration than learning staff next to a topless female.

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Posted:Yeah, I know what you mean, but what I ment was would using them stop the nut undoing?

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squid
BRONZE Member since Apr 2007

squid

sanguine
Location: sur, USA

Total posts: 382
Posted:Basically the two nuts together, or the spring washer, would cause the nut to lock into place by placing enough friction against the thread itself to overcome any chance of slipping off. I know its effective in just about any situation. The threading on the inside of the nut rubs so tightly against the threading of the bolt itself that the whole set is jammed tight. Without a tool and some force to overcome that friction, it doesn't move.

But its not something that is often put under high temperature tests. The only way to know for sure is to test it yourself. I would go for the spring washer over the double nut method because the washer is specifically designed for this kind of thing. The double nut method is simply an improvisation, and that still wont have the same tension that spring tension would.


"to a man whose only tool is a hammer, the whole world looks like a nail." Abraham Maslow

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polarity
SILVER Member since May 2005

polarity

veteran
Location: on the wrong planet, United Ki...

Total posts: 1228
Posted:Alternatively, if the nut and bolt are big enough you can drill a hole right through the side of them, and lock them in place with a split pin.

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