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Loos Gauge conversion question #172488
03/20/09 08:05 PM
03/20/09 08:05 PM
Joined: May 2002
Posts: 1,037
Central California
ejpoulsen Offline OP
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ejpoulsen  Offline OP
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Central California
I have and old...very old...Loos gauge, which I want to throw out.
http://www.binksonline.com.au/store/images/loos%20gauge%20sm.jpg

I also have a nice newer different model Loos gauge, which I want to use. http://www.stargear.net/images/Products/Misc%20Items/Loos%20Gauge.jpg

Problem is how to convert info/data from the old style to the newer model

Can anyone tell me how to convert?

In other words, 34 on the old loos means what on the new?


Eric Poulsen
A-class USA 203
Ultimate 20
Central California
-- Have You Seen This? --
Re: Loos Gauge conversion question [Re: ejpoulsen] #172490
03/20/09 08:49 PM
03/20/09 08:49 PM
Joined: Nov 2005
Posts: 5,582
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hobie1616 Offline
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This might help.
[Linked Image]
[Linked Image]


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Re: Loos Gauge conversion question [Re: hobie1616] #172491
03/20/09 09:02 PM
03/20/09 09:02 PM
Joined: Feb 2005
Posts: 4,118
Northfield Mn
Karl_Brogger Offline
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I'd just measure a few different setups with both gauges and see how close they are to one another?

Re: Loos Gauge conversion question [Re: Karl_Brogger] #172492
03/20/09 09:15 PM
03/20/09 09:15 PM
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Posts: 586
Hobart, Tasmania, Oz.
Dazz Offline
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Dazz  Offline
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They are some where between 8-10 different. the older silver one will read higher numbers at the same tension.

the problem with the silver model is over time they bend and give different readings to a new one. thus making a conversion impossible.

i would just measure the range you using now (loose medium and tight) and make a note of both readings.


C2 AUS 222 by Goodall design
"Darph Bobo"
Re: Loos Gauge conversion question [Re: Karl_Brogger] #172495
03/21/09 12:25 AM
03/21/09 12:25 AM
Joined: May 2002
Posts: 1,037
Central California
ejpoulsen Offline OP
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ejpoulsen  Offline OP
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Is there a one-to-one relationship in the readings between the gauges? My old gauge is worn out and unreliable.


Eric Poulsen
A-class USA 203
Ultimate 20
Central California
Re: Loos Gauge conversion question [Re: ejpoulsen] #172497
03/21/09 03:32 AM
03/21/09 03:32 AM
Joined: Sep 2006
Posts: 586
Hobart, Tasmania, Oz.
Dazz Offline
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Dazz  Offline
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Definitely not.

0 on both = 0

45 on the silver = 35 on the black one.

best guess would be a 18% difference, without getting the calculator out! yeah I know.. I'm sitting in front of a huge calculator...


C2 AUS 222 by Goodall design
"Darph Bobo"
Re: Loos Gauge conversion question [Re: Dazz] #172503
03/21/09 10:32 AM
03/21/09 10:32 AM
Joined: May 2002
Posts: 1,037
Central California
ejpoulsen Offline OP
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ejpoulsen  Offline OP
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Central California
So if I understand correctly and remember algebra, if I worked in the range of 32-36 on the old silver Loos, I'll be working in the range of 26-30 on the new black Loos. Right?


Eric Poulsen
A-class USA 203
Ultimate 20
Central California
Re: Loos Gauge conversion question [Re: ejpoulsen] #172515
03/21/09 05:20 PM
03/21/09 05:20 PM
Joined: Sep 2006
Posts: 586
Hobart, Tasmania, Oz.
Dazz Offline
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Dazz  Offline
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Hobart, Tasmania, Oz.
Sounds like you would be in the right range, maybe one or two out but a good place to start from.


C2 AUS 222 by Goodall design
"Darph Bobo"
Re: Loos Gauge conversion question [Re: Dazz] #172519
03/21/09 09:34 PM
03/21/09 09:34 PM
Joined: Mar 2008
Posts: 93
USA1273 Offline
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USA1273  Offline
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Posts: 93
Here is a conversion guide:

http://www.northsails.com/tuninggui...eConversionChart/tabid/9201/Default.aspx

Remember the gauges lose some of their accuracy as they age...


F18 USA 1273
Andrews 77 (SOLD) Melges 32 (SOLD) Formula18 Olympic 49er (FOR SALE)
Always outnumbered - Never outgunned....
Re: Loos Gauge conversion question [Re: USA1273] #172613
03/23/09 10:56 AM
03/23/09 10:56 AM
Joined: Sep 2002
Posts: 3,224
Roanoke Island ,N.C.
Team_Cat_Fever Offline
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Team_Cat_Fever  Offline
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At the Admirals cup this past weekend we had a silver one and 2 black(pt1?) and they all read different.
Any of you come up with a formula to read rod rigging or di-form and get an equal number to 10x19 wire?
Todd


"I said, now, I said ,pay attention boy!"

The cure for anything is salt water - sweat, tears, or the sea
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If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most.
E. B. White
Re: Loos Gauge conversion question [Re: Team_Cat_Fever] #172701
03/24/09 09:35 AM
03/24/09 09:35 AM
Joined: Aug 2006
Posts: 297
R
rexdenton Offline
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rexdenton  Offline
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Posts: 297
I think that any meaningful conversion between the 2 devices is practically impossible, as the silver ones rely upon the elastic properties of a piece of aluminum welded to another piece of aluminum-enough pulls and that property in aluminum is bound to change, I think. I know this is not a satisfying reply, but...

Of the 2 devices, the one with the wheels is much more consistent and better calibrated to the expected bend occurring from a static force and tension in the various caliber wound wires-just a better design overall. I have found that the 'spring and wheel guages' generally give pretty close readings (from one of the same devices to the next). Finally, A loos guage only gets you close to the rigging tension-good enough to be consistent if the device used and wire caliber are consistent, but not good enough to compare between different types of instruments, or be fully accurate based on the material composition. It's a lot cheaper than the piezo electric alternative which cost thousands.


Nacra F18 #856
Re: Loos Gauge conversion question [Re: rexdenton] #172724
03/24/09 11:19 AM
03/24/09 11:19 AM
Joined: May 2002
Posts: 1,037
Central California
ejpoulsen Offline OP
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ejpoulsen  Offline OP
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Joined: May 2002
Posts: 1,037
Central California
Thanks for all the info.

It seems clear that the two devices are quite different and there readings relate in a non-linear way. Nonetheless, I've determined that the typical working range of 32-38 on the Model A is similar to readings of 24-30 on the newer model, which I'll be using from now on.


Eric Poulsen
A-class USA 203
Ultimate 20
Central California

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