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TimeTechTalk.com > Time Tech Talk > Time Talk > Question on the "why" and "when" to use strap tubes (what is your preference) |
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TimeTechTalk.com > Time Tech Talk > Time Talk > Question on the "why" and "when" to use strap tubes (what is your preference) |
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| Question on the "why" and "when" to use strap tubes (what is your preference) | Rate Topic |
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| Posted: Thu Jun 24th, 2010 04:09 pm |
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1st Post |
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stew77 Admin 
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I have always wondered about the why and when to use the strap "Tubes" (that very rarely come standard on leather watch straps these days). This is just a wild guess on my part, but I suppose the tubes provide additional support to the leather strap by effectively distributing the push and pull of the lug bars against the strap? I had strap tubes come on a Ted Su that I purchased for my Kampy and removed them as I kind of wanted the wire lugs of the Kampy to hang loose in that strap lug space. Any of you Veteran WIS's know the why and when to use strap tubes? Do any of you have a preference one way or the other if given the choice of tubes or no-tubes? Thanks, Chris
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| Posted: Thu Jun 24th, 2010 06:28 pm |
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2nd Post |
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watchdaddy1 3T WIS 
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Great question, I was just about to post same kina inquiry as to y >>>.Wish I knew why as well..I just recieved a HEROIC18 W/ TUBES...Do you remove them or not???
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| Posted: Thu Jun 24th, 2010 07:01 pm |
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3rd Post |
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mcwright Admin 
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Guess I'm not collecting the right watches. Never heard of strap tubes. Radio tubes - yes, Mailing tubes - yes, Toothpaste tubes - yes, etc. 
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| Posted: Thu Jun 24th, 2010 07:14 pm |
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4th Post |
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bigrustypig 3T WIS 
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stew77 wrote: I have always wondered about the why and when to use the strap "Tubes" (that very rarely come standard on leather watch straps these days). This is just a wild guess on my part, but I suppose the tubes provide additional support to the leather strap by effectively distributing the push and pull of the lug bars against the strap? Good question, Chris. Here is my opinion...maybe not the answer....the tubes add stability to the pins or spring bars in the sense that they minimize excessive play of the spring bar/pins inside the "tunnel". You are right about the distribution. This is particularly a concern because many straps made today that are in excess of 3.5mm thick need to have a certain bend or inward curl at the lug end and with the thickness of the leather, it is inevitable that the "tunnel" created by the curl becomes fat. The tubes are an answer to that. I just checked some of my straps for my dress watches and all of them have thin or narrow "tunnels" and this requires no need for tubes. I think the thinness of the leather for dress watches and the curl that the strap maker needs at the lug ends novates the need for tubes. I also checked the spring bars of my Marine Masters and they are all "fatties" that no longer need a tube. Of course, I can be corrected by anybody on 3T as I could be totally wrong.....this is just my opinion 
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| Posted: Thu Jun 24th, 2010 08:01 pm |
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5th Post |
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Nabco 3T WIS 
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Not sure if there is a hard set rule on this...you always seem to get tubes with the 24 and 26mm straps for Pam style cases and to be honest i can't think of any other watch I own that has them. Good question 
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| Posted: Thu Jun 24th, 2010 08:07 pm |
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6th Post |
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oagaspar Site Founder 
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the "tubes" you speak of are actually Panerai Tubes which are used to add tensile strength to the strap and Panerai instructs you use them with all strap changes....Panny still has the best lug screw system imho.. ....using them with springbars depends on which springbar as there are many styles and not all are compatible with the tubes...with some that don't have a single or double circumference ring straps are harder to remove once in place with the tubes because the tube is very close to the inside of the lug....I only use them with watches that have lug screws as it does add tensile strength and fills any void left from some after market strapmakers who like to leave excess leather or larger lug holes in their straps. 
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| Posted: Thu Jun 24th, 2010 08:24 pm |
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7th Post |
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Skipdawg 3T WIS 
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Yea what Oscar said. LOL happy1.gif
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| Posted: Thu Jun 24th, 2010 08:30 pm |
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8th Post |
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Nabco 3T WIS
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oagaspar wrote: the "tubes" you speak of are actually Panerai Tubes which are used to add tensile strength to the strap and Panerai instructs you use them with all strap changes....Panny still has the best lug screw system imho.. He said "tensile"  
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| Posted: Thu Jun 24th, 2010 08:41 pm |
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9th Post |
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oagaspar Site Founder
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Nabco wrote: oagaspar wrote:Yep!...copied that right from Panerai and had to look it up so I knew what it meant!the "tubes" you speak of are actually Panerai Tubes which are used to add tensile strength to the strap and Panerai instructs you use them with all strap changes....Panny still has the best lug screw system imho..  Tensile strength (σUTS or SU ) is indicated by the maxima of a stress-strain curve and, in general, indicates when necking will occur. As it is an intensive property, its value does not depend on the size of the test specimen. It is, however, dependent on the preparation of the specimen and the temperature of the test environment and material. The standard way to measure tensile strength is to use a small bar with uniform width (apart from at the edges where the thickness increases) and to 'pull' at each end until the bar fails. In the process, other mechanical properties may be obtained. Other testing methods also exist, such as the plane strain compression test. Tensile strength, along with elastic modulus and corrosion resistance, is an important parameter of engineering materials used in structures and mechanical devices. It is specified for materials such as alloys, composite materials, ceramics, plastics and wood.
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| Posted: Thu Jun 24th, 2010 09:35 pm |
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10th Post |
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watchdaddy1 3T WIS
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THANKS OSCAR.............................
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| Posted: Thu Jun 24th, 2010 10:04 pm |
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11th Post |
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stew77 Admin
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Well, well...as is always the case on 3T...Ask and you shall receive!!! Thanks for all the interest and replies all (especially Jeff, Oscar, and ok Skipdawg - Oscar only beat you to a reply by like 17 minutes and I'm sure you had the same excellent explanation ).  Another WIS mystery solved for me...and I had been wondering about this for some time. And thank you Will...it was your post of your new cool Heroic18 with tubes that actually spurred me on to not wait another day and throw the question out into 3T land.  3T has the best WIS around!!!! 
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| Posted: Thu Jun 24th, 2010 11:46 pm |
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12th Post |
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watchdaddy1 3T WIS
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3T has the best WIS around!!!! DITTO
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