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Gecko10 · 21 December 2012, 02:16 AM

How are the length's of spring bars measured? Uncompressed or compressed?

Thanks!!

kilyung · 21 December 2012, 07:16 AM

Uncompressed. The key measurements are body length/thickness, total length, and pivot thickness.

honitel · 21 December 2012, 08:26 AM

I agree with Kilyung. For the uncompressed length, it should be 23.2 mm.

Gecko10 · 21 December 2012, 09:34 AM

Well, I borrowed a good micrometer from my neighbor and measured a known set of 20mm and another known set of 22mm and they measured 20 and 22mm respectively only when compressed.

rmfnla · 3 January 2013, 10:26 AM

Quote:

Originally Posted by kilyung

Uncompressed. The key measurements are body length/thickness, total length, and pivot thickness.

Really?

I always see them listed based on the distance between lugs (i.e. 20mm).

Am I missing something..?

joseluu · 10 January 2013, 07:11 PM

I believe when ONLY the length of the springbars is mentioned it means the distance between the lugs they are supposed to fit in.

In other occasions you are given more data, like the length and diameter of the fixed part, the length and diameter of the pins, etc.

That is only what I understand. Of course I can be wrong, it wouldn´t be the millionth time...

Andad · 10 January 2013, 08:20 PM

A 20mm springbar is suitable for a watch that is 20mm between the lugs.
The uncompressed length is a function of 2 x the pin insert distance/measurement plus the width of the bar. This varies from maker to maker.
Looks like it is 20mm + 2 x 1.6mm.

Gecko10 · 11 January 2013, 12:50 AM

Quote:

Originally Posted by directioneng

A 20mm springbar is suitable for a watch that is 20mm between the lugs.
The uncompressed length is a function of 2 x the pin insert distance/measurement plus the width of the bar. This varies from maker to maker.
Looks like it is 20mm + 2 x 1.6mm.

Yes, that's about what I see when doing accurate measurement on them.

Thanks!!

wantonebad · 11 January 2013, 02:17 AM

Quote:

Originally Posted by directioneng

A 20mm springbar is suitable for a watch that is 20mm between the lugs.
The uncompressed length is a function of 2 x the pin insert distance/measurement plus the width of the bar. This varies from maker to maker.
Looks like it is 20mm + 2 x 1.6mm.

X2

21 December 2012, 02:16 AM	#1
Gecko10 "TRF" Member Join Date: Nov 2012 Location: New Mexico Watch: GMT 1675 Posts: 331	Spring Bar/Pin length Measurement How are the length's of spring bars measured? Uncompressed or compressed? Thanks!!

10 January 2013, 08:20 PM	#7
Andad 2024 ROLEX DATEJUST41 Pledge Member Join Date: Nov 2006 Real Name: Eddie Location: Australia Watch: A few. Posts: 36,797	A 20mm springbar is suitable for a watch that is 20mm between the lugs. The uncompressed length is a function of 2 x the pin insert distance/measurement plus the width of the bar. This varies from maker to maker. Looks like it is 20mm + 2 x 1.6mm. __________________ E

21 December 2012, 07:16 AM	#2
kilyung 2024 Pledge Member Join Date: Jul 2009 Location: Cave Watch: Sundial Posts: 33,870	Uncompressed. The key measurements are body length/thickness, total length, and pivot thickness.

21 December 2012, 08:26 AM	#3
honitel Member Join Date: Sep 2012 Real Name: Honitel Location: USA Watch: Rolex Posts: 148	I agree with Kilyung. For the uncompressed length, it should be 23.2 mm.

21 December 2012, 09:34 AM	#4
Gecko10 "TRF" Member Join Date: Nov 2012 Location: New Mexico Watch: GMT 1675 Posts: 331	Well, I borrowed a good micrometer from my neighbor and measured a known set of 20mm and another known set of 22mm and they measured 20 and 22mm respectively only when compressed.

10 January 2013, 07:11 PM	#6
joseluu "TRF" Member Join Date: Feb 2012 Location: Madrid (Spain) Posts: 702	I believe when ONLY the length of the springbars is mentioned it means the distance between the lugs they are supposed to fit in. In other occasions you are given more data, like the length and diameter of the fixed part, the length and diameter of the pins, etc. That is only what I understand. Of course I can be wrong, it wouldn´t be the millionth time...

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