Any Carpenters, Woodworkers or Fabricators? - The Horse Forum

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post #1 of 5 Old 08-18-2013, 12:36 PM Thread Starter
Green Broke
 
Join Date: May 2011
Location: Missouri
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Any Carpenters, Woodworkers or Fabricators?

I am on the home stretch of building a wooden cart.
I started it about 19 years ago.
The horse I was building it for has been dead for about 12 years.

So I really want to finish it and sell it, I have my eye on a bigger cart for my bigger horse.

I have a few questions about the correct way to finish the fasteners,

When attaching a nut to a bolt against wood, what is the proper sequence, using a flat washer, lock washer, regular nut, lock nut or double nut?

When attaching a nut to a bolt against metal, what is the proper sequence using a flat washer, lock washer, regular nut, lock nut or double nut?

Also I have a piece that holds the leaf springs to the shafts, and it must have movement in it, like it swings back and forth, so I don't want it too tight.
What would I use there?

I don't want to go around re-tightening every nut and bolt every time anyone uses it.So I need the nuts and bolts to stay tight. I usually go over all my vehicles and do all that maintenance in the spring.

Thanks!

cart 003.jpg

Copy of cart 009.jpg
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post #2 of 5 Old 08-18-2013, 01:13 PM
Trained
 
Join Date: Jul 2011
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Using flat washer and lock washers help distribute the force you are applying to the nut to whatever is being bolted together so should not be done away with. Lock washers have the extra job of helping keep the nut from loosening. Here's some things you can also use.

-Nylock nuts.
-Locktite.
-Wire lock (not really useable in this application).
-Star washers on metal but not wood, no flat washer in this application.

For your buggy I would probably use a mix of locktite and nylock nuts. Loctite for those nuts you just don't want to come off. Nylock for applications where you don't want to go super tight but can't have it backing off either. But if you want to allow motion at a joint you should use a bushing and torque your bolt to that instead.
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post #3 of 5 Old 08-18-2013, 01:26 PM Thread Starter
Green Broke
 
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Thanks, Darrin,

So on wood or metal, it would be, Flat washer then locktite nut, where it will never move?

With the locktite nut there is no need for a lock washer?

I will get a better photo of the swinging joint. Will several flat washers, do the same as a Bushing?

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post #4 of 5 Old 08-18-2013, 01:39 PM
Trained
 
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Loctite is a product you put on the threads that hold the nut to bolt. There are different grades of it that go from gooey but still fairly easy to remove the nut to "OMG why did I ever put this stuff on!" when you actually need to pull them apart.

Even with Loctite I would still use a lock washer though technically it's not really needed. Some of that is habit and some is because flat washers usually fit loosely on the bolt so using a lock washers help with distributing the force better.

Nylock nuts have a nylon insert that greatly increase the friction which in turn makes it harder for the nut to back off.

Adding flat washers will not replace using a bushing.
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post #5 of 5 Old 08-18-2013, 01:41 PM Thread Starter
Green Broke
 
Join Date: May 2011
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Glad I asked, I had it all wrong. Thanks!
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