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Old 10-09-2017, 10:06 AM   #1
rvsuper8
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Default Popping during wire tensioning

I have a couple of S1S's that I have to take apart often to truck between airshows. This means a lot of wire tensioning. Im getting pretty good at it now.

During tensioning, there is a lot of popping both at the turnbuckle end, as well as at the wing ends as things tighten up, tension builds as I turn, and then it transfers to the end and it pops as the tension transfers. Tightening as close as I can get to the ends helps of course, but does not eliminate. Some ends pop. Some dont.

Ive been told that this is normal, but I DONT LIKE IT. I wonder if there is something that can be done. I tried a little grease on the turnbuckle end. Did nothing.

If I could just tighten smoothly with out the popping going on, I sure would like it better.

Any ideas?
Thanks
Mike


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Old 10-09-2017, 11:36 AM   #2
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An Anti-Seize product may work better for you than a simple lubricant.


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Old 10-09-2017, 02:06 PM   #3
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I was thinking the same thing. an anti seize has finely ground copper or an equivalent that will remain in the threads without squeezing out. Jetlube is one that will not squeeze out until the pressure is well over 60,000 psi. It also has molybdenum disulfide that actually bonds to the steel and will not squeeze out. They use it in the oil fields for the drill rod joints that can get incredibly tight.
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Old 10-09-2017, 02:55 PM   #4
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I had the same popping sound /gripping jitters when I was tightening my wires. I figured it was because of the twanging length of the wires.
This is good info to know about.

Question I have.
With a little anti seize or Jetlube applied, this will not contribute to loosening of anything at wire end?
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Old 10-09-2017, 03:03 PM   #5
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Quote:
Originally Posted by taff View Post
I had the same popping sound /gripping jitters when I was tightening my wires. I figured it was because of the twanging length of the wires.
This is good info to know about.

Question I have.
With a little anti seize or Jetlube applied, this will not contribute to loosening of anything at wire end?
Shouldn't have anything to do with it since you should have jam nuts on the wires preventing any loosening.
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Old 10-09-2017, 06:13 PM   #6
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The wires come with a moly lube on the threads when new and the manufacturer warns it must remain in use.
Any good moly grease with the words "extreme pressure" in the description should be good enough.
Valvoline makes a full synthetic moly based grease that's available at most auto parts store. It's black, works great on you wheel bearings and everything else.
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Old 10-09-2017, 08:16 PM   #7
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The wires are stainless but what about the terminals? If also stainless steel there maybe some pressure building when tighting the wires and maybe at some point the pop or snap you hear is the wires and terminals popping in place from the pressure build up.
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Old 10-09-2017, 08:59 PM   #8
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If both are SS I would be doubly suspicious of popping as that can generate heat and cause a galling condition. Stainless on stainless (same number such as 304 on 304) can gall in a heart beat, don't ask me how I know! For example rifling SS barrels is a science all its own due to the galling and stretching.
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Old 10-09-2017, 09:24 PM   #9
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Quote:
Originally Posted by Larry Lyons View Post
I was thinking the same thing. an anti seize has finely ground copper or an equivalent that will remain in the threads without squeezing out. Jetlube is one that will not squeeze out until the pressure is well over 60,000 psi. It also has molybdenum disulfide that actually bonds to the steel and will not squeeze out. They use it in the oil fields for the drill rod joints that can get incredibly tight.
Larry,
Went hunting for jet-lube and I ran into more options than I could decifer.
Can you help me pick one?
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Old 10-09-2017, 10:36 PM   #10
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OK I looked we use the Jet Lube 21 however that only comes in 1 gal. and larger. But the Jet Lube Kopper Kote is great stuff. We have used it on exhaust studs and other extreme applications and like it.

http://www.jetlube.com/pages/Anti-Seize.html

PS: Didn't know they had this stuff.

http://www.jetlube.com/pages/Graphite_Petrolatum.html
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Last edited by Larry Lyons; 10-09-2017 at 10:38 PM. Reason: Added PS
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Old 10-09-2017, 10:59 PM   #11
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What tool are people using to turn the wires?
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Old 10-09-2017, 11:28 PM   #12
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I have several I made from aluminum bar stock and the last one from a modified adjustable wrench.
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Old 10-11-2017, 10:42 AM   #13
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I found these products.

Are these the products you guys mean?
09-25100[2].jpg   kopr-kote-slide[1].jpg  
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Old 10-11-2017, 11:49 AM   #14
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I would stick with the MoS compounds, Cu and some alloys do not play well together.
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Old 10-11-2017, 07:08 PM   #15
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I believe the Kopper Kote is intended for aviation use. Go look at the link I posted.
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Old 10-11-2017, 08:33 PM   #16
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Can you tell where the popping sound is coming from? The wires, inside the wings or somewhere else?
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Old 10-11-2017, 08:45 PM   #17
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Quote:
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Can you tell where the popping sound is coming from? The wires, inside the wings or somewhere else?
From all ends. Turnbuckles at the fuse, and in the wings. As tension increases, I make half turns on each end of the wire. Happens on both my S1's. Im gonna try some of the copper anti seize as I have some of that. A drop or 2 of engine oil on the threads during insert. Didnt do anything. Its all I had at the time. Ill report back my results.
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Old 10-12-2017, 11:08 AM   #18
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I would be very cautious about using a Cu based lubricant in a high stress application with a dissimilar metal in contact. Galvanic corrosion and stress induced cracking is possible. The cut threads in some of the flying wires would be of concern. It would be best to Use the MoS lubricants as recommended by the manufacturer.
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Old 10-12-2017, 12:33 PM   #19
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Quote:
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I would be very cautious about using a Cu based lubricant in a high stress application with a dissimilar metal in contact. Galvanic corrosion and stress induced cracking is possible. The cut threads in some of the flying wires would be of concern. It would be best to Use the MoS lubricants as recommended by the manufacturer.
I do not discount your concerns. However, The mil-spec Mil-A-907 for this Cu based anti-seize specially calls out the use with steel and the MSDS sheets on it also reference it use as a lubricant for metal parts to prevent seizure& galling. Practically speaking, this specific product has been used for decades in the military and heavies as an all-purpose anti-seize for just about everything.
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Old 10-12-2017, 07:54 PM   #20
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Note copper is good anti seize on steel parts, but not stainless steels. Copper will induce cracking in stainless steels resulting in failure when the flying wire is placed under load. I would not use copper based anti seize on any stressed stainless steel component. There are some very good anti seize compounds for stainless steels, but copper based is not one of them.

Do a web search on Armite CP-2000 copper anti seize for some history.
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Old 10-12-2017, 08:58 PM   #21
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The manufacturer is very specific about the use of a moly based extreme pressure lube on the threads.
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Old 10-13-2017, 10:43 AM   #22
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You sold me! Moly based it shall be. Thanks everyone for the great info on the thread.


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