[TR] TR2/3 wire wheel adapters - frightening experience.

[Peter Ryner]

The stud threads are not LH and RH, only the knock offs.  I would check that the correct nuts were used as they are different from the steel wheels.  Also, many POs used to cut the studs to fit the wire wheel adapter rather than remove the studs to install the proper length studs.  Sometimes a little too much was taken off and the stud didn't extend past the end of the nut enough which would affect the tightness of the nut.  According  to my old Air Force aviation maintenance training the thread has to extend at least one and a half threads for the nut to properly torque and stay tight.
Pete
 
 
-----Original Message-----
From: David Greed <david.greed at wave.co.nz>
To: 'EDWARD WOODS' <fogbro1 at comcast.net>; 'Randall' <TR3driver at ca.rr.com>; 'Angelo Graham' <agraham at execulink.com>; triumphs <triumphs at autox.team.net>
Sent: Mon, Aug 21, 2017 6:37 pm
Subject: Re: [TR] TR2/3 wire wheel adapters - frightening experience.



Surely the LH threads should be on the LH side and RH threads on the RH side – that’s how it is on any vehicle I have dealt with…
 
 
DavidG
 


From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of EDWARD WOODS
Sent: Tuesday, 22 August 2017 07:12
To: Randall <TR3driver at ca.rr.com>; Angelo Graham <agraham at execulink.com>; triumphs at autox.team.net
Subject: Re: [TR] TR2/3 wire wheel adapters - frightening experience.

 
Randall,
 
That being the case, then why are wire wheel nuts R/H thread on the left side and L/H thread on the right side of the car? Not trying to be a smart ass, just puzzled.   Wire wheel nuts are self tightening, aren't they?
 
What's the difference?
 
Ed Woods

On August 21, 2017 at 1:54 PM Randall <TR3driver at ca.rr.com> wrote:

Clearly a case of needing to do more routine checking -
especially when
it comes to wheels. Can't figure out why the nuts backed off

I think
Loctite would be a good idea here.

I'm not sure about Loctite, but it is definitely important to torque those
funky double-taper nuts to 65 ft-lb (not the 50 ft-lb used for regular lug
nuts). Not just any time you have them off, but every year as part of your
annual wire wheel maintenance (IMO).
The physics is a bit hard to explain, but basically because they are right
hand threads on the left hand side; any tiny bit of motion will eventually
unscrew the nut!
I had the same thing happen with Dad's TR3A many decades ago, except I was
fortunate enough to notice the squirrely handling caused by the adapter
being almost off the studs before the wheel actually parted company. Just
pure luck that two of the nuts were still on the threads when I took an exit
ramp rather faster than I should have.
Then the same thing happened again, same car, just a few years ago. That
time the wheel did come off, taking the fender with it.
-- Randall
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