On Mon, 15 Apr 2024 11:39:34 -0400, Joe Gwinn <joegwinn@comcast.net>
wrote:

>On Sun, 14 Apr 2024 23:42:10 -0400, Clare Snyder <clare@snyder.on.ca>
>wrote:
>
>>On Sun, 14 Apr 2024 13:08:35 -0400, Joe Gwinn <joegwinn@comcast.net>
>>wrote:
>>
>>>On Sat, 13 Apr 2024 21:39:58 -0400, Clare Snyder <clare@snyder.on.ca>
>>>wrote:
>>>
>>>>On Sat, 13 Apr 2024 18:16:20 -0400, Joe Gwinn <joegwinn@comcast.net>
>>>>wrote:
>>>>
>>>>>On Sat, 13 Apr 2024 11:45:50 -0700, Bob La Londe <none@none.com99>
>>>>>wrote:
>>>>>
>>>>>>On 4/13/2024 11:25 AM, Joe Gwinn wrote:
>>>>>>> On Sat, 13 Apr 2024 08:05:57 -0400, "Jim Wilkins"
>>>>>>> <muratlanne@gmail.com> wrote:
>>>>>>>
>>>>>>>> "Snag" wrote in message news:uvcbh7$2jb8r$1@dont-email.me...
>>>>>>>>
>>>>>>>> On 4/12/2024 5:01 PM, Joe Gwinn wrote:
>>>>>>>>> On Fri, 12 Apr 2024 13:36:58 -0700, Bob La Londe <none@none.com99>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> You probably want a bronze or stainless steel Drake two-piece Lock
>>>>>>>>> Nut:
>>>>>>>>>
>>>>>>>>> .<https://www.lok-mor.com/products/free-spinning/drake/>
>>>>>>>>>
>>>>>>>>> Joe Gwinn
>>>>>>>>>
>>>>>>>>
>>>>>>>> Looks a lot like a 40 dollar solution for a 2 dollar problem , Joe ...
>>>>>>>> Snag
>>>>>>>>
>>>>>>>> ------------------------------------
>>>>>>>> I look for reliable methods using easily available hardware or auto store
>>>>>>>> products, such as doubled nuts. If necessary they can be modified on the
>>>>>>>> lathe or drilled for safety wire.
>>>>>>>
>>>>>>> The OP was complaining that nothing he tried really worked, causing
>>>>>>> danger to man and beast, and not so much about the cost of the
>>>>>>> hardware, and Drake Nuts are the gold standard. They simply don't
>>>>>>> shake loose. Finger tight causes noticeable locking.
>>>>>>>
>>>>>>> Failing that, I'd try a thick nut and a jam nut tightened hard against
>>>>>>> one another. And Loctite don't hurt. I recall from a study I read
>>>>>>> that one puts the jam nut under the thick nut for best shake
>>>>>>> resistance. Lok-Mor may have the study I recall, or it was an old
>>>>>>> NASA study.
>>>>>>>
>>>>>>> Joe Gwinn
>>>>>>
>>>>>>Well, I didn't actually say that.
>>>>>
>>>>>True, not those words, but this:
>>>>>
>>>>>"Somewhere on a long flat Southwest of Globe/Miami I glanced in the
>>>>>mirror to see one of the hooks for a front strap laying on the trailer
>>>>>deck. The strap broke where it went over the frame.  Fortunately I had
>>>>>left the winch cable tight or I might have lost the truck."
>>>>>
>>>>>Losing the truck on the highway is likely to cause a accident, and
>>>>>maybe a double accident (the departing truck may go sidewise,
>>>>>destabilizing the truck pulling or carrying everything). Free-range
>>>>>rolling truck tires are bad enough. Bloodcurdling.
>>>>>
>>>>>This would have terrified me for sure.
>>>>>
>>>>>
>>>>>> .... Just that two of the nuts came off
>>>>>>for no good reason. I did install regular Gr-8 nuts and lock washers
>>>>>>with red Permatex thread locker to finish my adventure. Afterwards it
>>>>>>made the trip up up to Globe/Miami over the mountains, down and back up
>>>>>>through Salt River Canyon, and then on up and down the grades into Show
>>>>>>Low. There I loaded a full size 3/4 ton diesel pickup and made the
>>>>>>reverse trip braking and engine braking up and down some modestly steep
>>>>>>inclines. Enough so that there were brake check areas and emergency
>>>>>>runaway pullouts.
>>>>>>
>>>>>>This morning I ordered a box of each of gr-8 lock washers and nuts. The
>>>>>>cost of which was about the same (a little less) as the couple items I
>>>>>>bought at the Tractor Supply store in Coolidge to make repairs. Before
>>>>>>I make another such trip I'll be replacing all the lock nuts with
>>>>>>regular GR-8 nuts and high strength thread locker. As near as I can
>>>>>>tell the threads on the u-bolts are fine and they do not appear to have
>>>>>>stretched, but of course I didn't clamp them up and measure them. Two
>>>>>>of the original nuts just failed to hold. The new nuts did spin easily
>>>>>>into place (which surprised me).
>>>>>>
>>>>>>These are a pair of six ton axles and they were not cheap. They were
>>>>>>just the closest to the correct size for the application that I could
>>>>>>find.
>>>>>>
>>>>>>I've got a fair amount of faith in liquid thread locker. I've used
>>>>>>Permatex, Vibratite, and of course Loc-Tite brands with good results
>>>>>>over the years.
>>>>>>
>>>>>>I'm not opposed to more expensive solutions. I just don't think its
>>>>>>necessary here. I did look at your link and I can see places it would
>>>>>>be useful.
>>>>>
>>>>>I would submit that compared to the cost of an accident, a few Drake
>>>>>Nuts are insignificant.
>>>>>
>>>>>
>>>>>By the way, Drake Nuts were invented in the 1910s, US 1,271,449.
>>>>>
>>>>>And the analysis I couldn't remember was published in July 1922, and
>>>>>did compare the Drake Nut with the thin jam nut with regular nut (with
>>>>>jam nut between the big nut and whatever is being clamped). Drake
>>>>>Nuts worked regardless, but the big nut and jam nut assembly would
>>>>>shake loose. But this was before Loctite; this ought to work. The
>>>>>distorted nuts were also analyzed, and didn't win.
>>>>>
>>>>>Joe
>>>> For suspension bolts I like flanged locknuts. NEVER split lock
>>>>washers!!.
>>>
>>>Agree - they are useless, as are the star lock washers.
>>>
>>>
>>>> A serated nut with attached serated washer (LoxNut) is the
>>>>cat's ass. WhizLock nuts are a close second - particularly when
>>>>installed with medium lock-tite.
>>>
>>>Google didn't find LoxNut - buried under food stuff. URL?
>>>
>>>WhizNut did work, and it's only for cases where the thing being
>>>clamped is a good bit softer than the nut.
>>><https://www.mcmaster.com/products/whiz-nuts/>
>>>
>>>
>>>>Fijilok nuts work very well on adjustable threaded linkage - better
>>>>than NyLok
>>>
>>>Fijilok not found, buried under irrelevant stuff.
>>>
>>>
>>>> Flanged side distortion or top distortion nuts work well too -
>>>>particularly with medium lock-tite.
>>>
>>>Do distorted nuts with loctite work better than plain nuts with
>>>loctite?
>>>
>>Can't beat "belt and suspenders" - but always MEDIUM thread lock - if
>>I need to get out the torch to release the thread lock I mayas well
>>burn the sucker off!!!
>>>
>>>>If you MUST use lock washers, Nord-Lock or Disk-Lock. Either one
>>>>requires 50% more torque to remove than the install torque (torque
>>>>stud to 100 lb/ft and it takes 150 to break it loose)
>>>
>>>
>>>Nord-Lock is very good. <https://www.nord-lock.com/en-us/>
>>>
>>>I had to look Disk-Lock up. <https://www.sherex.com/>
>>>
>>>It is the Nord-Lock system (whose patents must have expired by now),
>>>cloned and maybe improved. I would assume that it is also very good.
>>>
>>>But I do think that while expensive, Drake Nuts are a whole lot
>>>better. But this is the right conversation to be having.
>>
>> Never seen a Drake before - ompressive.
>>Ever run into a Key-Lok? Equivalent to hitting the top thread with an
>>arc welder. That sucker is NEVER coming off - even if you want it
>>to!!!
>>>
>>>War story. A family member was towing a boat trailer, but had not
>>>attached the safety chains properly. If that trailer came loose,
>>>someone was going to die. Whereupon I put my foot down and made him
>>>use beefy threaded quick links.
>>>
>>><https://www.mcmaster.com/products/quick-links/>
>>>
>>>So, I'd also consider adding some safety chains.
>>>
>>>
>>>Joe Gwinn
>>
>> I had a tent trailer jump off the ball once. Had good safety chains
>>crossed under the hitch but the tounge jack took the abuse. It had a
>>rubber tire on it and by the time I got stopped it was worn to a cone
>>shape after attempting to drag the trailer off to the curb. From then
>>on I always BOLTED the hitch latch - using a nylock nut. Still don't
>>know how the clevis pin got out or why the latch released - I'm
>>CERTAIN I latched it - - - -
>
>Heart stopping to be sure.
>
>I'm unclear as to what exactly came loose and then happened.
>
>Joe Gwinn
The hitch unlatched from the ball. For that to happen the dafety had
to release - and it was SUPPOSED to be secured with a latch-pin. When
it jumped off the ball it was suspended on the crossed safety chains
but the toung jack wheel, which was pointing slightly to the right,
touched the ground and tried to stear the trailer to the curb and the
pavement acted like a grinder and "machined" the tire into a cone.
After that I ALWAYS double check the hitch and make sure everything
is secured before starting out - and at every stop.