Near Disaster

[TButtrick]

OK. That's starting to make sense. Let me get back to you after another shot. So then how do I explain what happened to my safety wire. My spinners seem significantly harder to remove after I've driven the car for a while. BTW, this wasn't intentional. Without instructions, I put the spindle marked "L" on the left side or driver's side not realizing that it meant left threads.

[A-Snake]

Originally Posted by TButtrick

OK. So then how do I explain what happened to my safety wire.

"Originally Posted by TButtrick
This is with right handed threads on the right side and tightens toward the front. As you can see from the picture, the safety wire indicates that the spinner has tightened more after driving. I have a loop in the safety wire that I monitor before each drive."


Based on what you said above, to loosen the nut would have rotated counter-clockwise which is exactly what it did. No more loop.
If it had tightened it would have rotated clockwise.

You are very lucky that there was safety wire on your wheels!

[TButtrick]

Originally Posted by A-Snake

"Originally Posted by TButtrick
This is with right handed threads on the right side and tightens toward the front. As you can see from the picture, the safety wire indicates that the spinner has tightened more after driving. I have a loop in the safety wire that I monitor before each drive."


Based on what you said above, to loosen the nut would have rotated counter-clockwise which is exactly what it did. No more loop.
If it had tightened it would have rotated clockwise.

You are very lucky that there was safety wire on your wheels!

OK.. I've had a few more shots of Teguillllla and I'm ready to contemplate. The pic I posted is of the passenger side wheel. The right of the pic is toward the front. The safety wire has slacked meaning the spinner tightened even more toward the front on right hand threads. My head hurts. Seriously, not trying to buck the system but I believe more of what I see.

[jmimac351]

I think I understand the explanation although, Todd, I have my Vintage hubs on the "correct" way so between the two of us we have this covered and should be fine.

[A-Snake]

Originally Posted by TButtrick

OK.. I've had a few more shots of Teguillllla and I'm ready to contemplate. The pic I posted is of the passenger side wheel. The right of the pic is toward the front. The safety wire has slacked meaning the spinner tightened even more toward the front on right hand threads. My head hurts. Seriously, not trying to buck the system but I believe more of what I see.

Ok, let's start with your comment "I have a loop in the safety wire that I monitor before each drive." I took that to mean you had a loop in the wire around midway and if the loop straightened out the knock-off had moved. The wire in the picture is shown more or less straight showing the knock-off has rotated counter-clockwise which would be "loosen" on right hand threads. What am I missing?

Now that I look at your safety wire a few more questions come to mind. The wire looks rusted. Are you not using stainless steel wire? How is the wire wrapped around the segment of the wheel? Did you drill a hole in the wheel as I don't see the wire going around a segment of the wheel.

http://www.whizwheels.com/Tips/safetywiring.html

[TButtrick]

Originally Posted by A-Snake

Ok, let's start with your comment "I have a loop in the safety wire that I monitor before each drive." I took that to mean you had a loop in the wire around midway and if the loop straightened out the knock-off had moved. The wire in the picture is shown more or less straight showing the knock-off has rotated counter-clockwise which would be "loosen" on right hand threads. What am I missing?

Now that I look at your safety wire a few more questions come to mind. The wire looks rusted. Are you not using stainless steel wire? How is the wire wrapped around the segment of the wheel? Did you drill a hole in the wheel as I don't see the wire going around a segment of the wheel.

http://www.whizwheels.com/Tips/safetywiring.html

Maybe its the perspective. Here's what it should look like (with stainless wire). Yes I drilled the wheel and wrapped it around the webbing. The loop is still there in my first pic. You're just looking at it from the side.

[FatBoy]

Originally Posted by TButtrick

OK.. I've had a few more shots of Teguillllla and I'm ready to contemplate. The pic I posted is of the passenger side wheel. The right of the pic is toward the front. The safety wire has slacked meaning the spinner tightened even more toward the front on right hand threads. My head hurts. Seriously, not trying to buck the system but I believe more of what I see.

There could be a number of reasons why you appear to have more slack in your wire, but rest assured, it isn't because your spinners have tightened.
You have your hubs and spinners on the wrong side of your car, please accept the combined wisdom and experience of countless authorities on the subject. I'm sure you won't find a single credible manufacturer that designs them to be the way you have them.

Paul

[Jac Mac]

This diagram explains it for the two types of nut, since the cobra originally came with wire wheels that I assume employed the Rudge ( Female- LHT/RHS ) nut, I could understand why everyone assumes that all centerlocks could be the same, however when you actually check the two principles out the above diagram is correct.

Now to add another curve ball, why do some have more problems than others with knock off's coming loose? I think it has more to do with wheel offset, camber and castor angles, and particularly scrub radius and how the cars weight bears on the center nut. For example-imagine a cobra with some positive camber ( wheel/tire out at top), in this situation the center nut will have more load imposed on it than if the car had 0° or negative camber.

Personally I dont have a horse in this race-yet, but one day before I do I intend to jig up a hub & male nut assy in the lathe so that I can spin it in both directions while changing the effective load inputs from side to side by means of a link to the tool post. Only thing I wont be able to do is simulate the effect that brake heat and different rates of expansion might have on these components . I KNOW that can cause a lot of grief from personal experience. Fat Boy, you should have been around that day- steel centerlock wheels on a male alloy hub with RHT/RHS--LHT/LHS, the self tightening process was definitely in action with that setup-- when the hub assy expanded during the race the center nut ( knockoff ) self tightened, when the hub cooled and shrunk it effectively increased the tightness of the center nut to the point where we had to destroy/cut the nut off by drilling/splitting it off the hub. These wheels were used as a set of wets & had given no problems prior when used as wets, but on this occasion the car had made a pitstop with a puncture during a dry race and as no spare was available the [not] so clever crew fitted the wet type tire/wheel.

BTW, look closely at T. Buttricks pics, both spinner( knock off ) & wheel center spoke are drilled for the safety wire.

[TButtrick]

Originally Posted by FatBoy

You have your hubs and spinners on the wrong side of your car, please accept the combined wisdom and experience of countless authorities on the subject. I'm sure you won't find a single credible manufacturer that designs them to be the way you have them.
Paul

Let's not get all huffy here. I've accepted the fact that they need to be changed. Just trying to better understand what I'm seeing. I guess I'm a bit surprised that, considering the importance of following conventional wisdom, that instructions weren't included.

Originally Posted by FatBoy

There could be a number of reasons why you appear to have more slack in your wire, but rest assured, it isn't because your spinners have tightened.
Paul

Name two.