Then some bright engineer fits left hand threads !! Don't get me started !!
Well
It was found very early in automotive history that left hand threads on the left hand side and right hand threads on the right hand side resulted in more secure wheel nuts and axle nuts etc. This is because the tendency to undo is countered by the relative rotation. That is a well known fact and most heavy vehicles use that system. It was not imposed by a rogue engineer on the drawing board.
As for the machine with every second gear being reversed. I have had to repair a high force testing machine 100T that was equipped with one of those bl**dy gearboxes. After the second disaster when an operator got it wrong and destroyed something by switching the motor the wrong direction, I made a mechanical lockout plate so the correct motor rotation could only be selected if in the right gear. How stupid was that design !
Jaahn
I have a 1967 Prince Skyline GTB (mid '60's Japanese car ) with LH wheel stud threads on LH side - maybe one of the last cars produced like this...who knows....the idea confuses alot of younger people if they have never seen/used a LH thread before. As you said -Still common on some trucks though....
boab said
01:08 PM Jun 24, 2021
my s series valiant has left hand studs on the left side for the reasons stated above helps stopping then coming loose
Tony Bev said
03:51 PM Jun 24, 2021
Getting back to the original posters question, should we lubricate wheel nuts
I have torqued a few wheel (and other type of) nuts, and mainly found, that if the manufacturer wanted the threads lubricated, they would say so
I have personally never used lubricant, on a normal vehicle wheel nut/bolt
I also doubt if a normal traveler, would carry lubricant with them
Aus-Kiwi said
10:27 PM Jun 24, 2021
Yes but they wouldnt want them rusty & dirty either !! Wheel studs get that way !!
Wanda said
08:06 AM Jun 25, 2021
As an ex mechanic, we never had a problem with a bit of lube on nuts if needed, but only if needed.
Never had any wheels fall off in 30yrs
Ian
iana said
07:11 PM Jun 26, 2021
Reading up on the subject on the net, I learn't quite a bit. Apparently its not just the lube, but the type of lube. To use or not to use will be the never ending question.
I have a 1967 Prince Skyline GTB (mid '60's Japanese car ) with LH wheel stud threads on LH side - maybe one of the last cars produced like this...who knows....the idea confuses alot of younger people if they have never seen/used a LH thread before. As you said -Still common on some trucks though....
I have torqued a few wheel (and other type of) nuts, and mainly found, that if the manufacturer wanted the threads lubricated, they would say so
I have personally never used lubricant, on a normal vehicle wheel nut/bolt
I also doubt if a normal traveler, would carry lubricant with them
Never had any wheels fall off in 30yrs
Ian