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Fly Line Database

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Paul Arden
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Fly Line Database

#1

Post by Paul Arden » Mon Apr 29, 2019 1:02 pm

I’ll look into how to build a database. How about we measure up lines according to the AFFTA/AFTM system to see how they measure up? I think that this would be very useful information. If you have some measurements then can you post them here please?

I’m most interested in line weight at 30ft excluding level tip (if there even is a level tip). But we can also do head length, total head weight, total line length (stretched) as well as total line weight. We should measure dry lines.

What do you think? Also can any of you recommend a set of decent electronic scales? The ones I have don’t calibrate well for light and heavy.

Many thanks,
Paul
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Lasse Karlsson
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#2

Post by Lasse Karlsson » Mon Apr 29, 2019 3:36 pm

Do All of them, and get an average on lines too, as they differ! Total weight makes most sense with a diameter measurement too, as a thicker running line on one batch gives higher total weight. Not many übergeeks measuring evert half meter though ;)

Gonna be one heck of a database if enough contribute!

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Lasse
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Paul Arden
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#3

Post by Paul Arden » Mon Apr 29, 2019 5:47 pm

I agree. Definitely lines of the same model and weight need to be measured to account for variations. I’ll look into the CCS database as well.

Cheers, Paul
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Lasse Karlsson
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#4

Post by Lasse Karlsson » Mon Apr 29, 2019 6:35 pm

This article is worth having in mind, and maybe get allowence to use the data as a start?

https://www.tridentflyfishing.com/blog/ ... yers-guide

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Lasse
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Viking Lars
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#5

Post by Viking Lars » Mon Apr 29, 2019 7:29 pm

I will of course contribute all I can to this database (it may even have been my idea a long time ago, in an alcohol fuelled moment by a campfire :-).
I think it's important that we all use the same equipement, and indeed also the same method. For instance, there's a big source for error in weighing 30' of flyline still attached "to the rest" rather than cutting them off. And I suppose not many will be doing that :-).

I had an Excel-sheet with measurement of about 120 flylines, app. 20 different lines. I measured them back when I worked part time in a flyfishing retail store. But that's unfortunately gone - donate know how or where.

Let's get this up and running - it would be really interesting!

Lars

George C
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#6

Post by George C » Mon Apr 29, 2019 10:46 pm

Absolutely you need total head weight/length to make any sense of what you are casting in the real world.

Wouldn't some emails to the tech support depts of the major companies gather this information more easily than weighing hundreds of lines? I know Rio provided me with the 30' and total head weights for all of their Bonefish and Flats pro lines very quickly.

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Graeme H
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#7

Post by Graeme H » Tue Apr 30, 2019 12:29 am

I'm in. I will be happy to contribute as many measurements as I can make.

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Graeme
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Paul Arden
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#8

Post by Paul Arden » Tue Apr 30, 2019 11:20 am

Hi George,

Yes both RIO and SA are both very good at providing this information on target weights and this information can be included too. There is a certain amount of manufacturing variation, which I’m not particularly looking to highlight, however it will be interesting to see various manufacturers tolerances. Be that as it may I think such a database of user’s measurements will be very useful. There are plenty of other manufacturers out there who are less forthcoming with information. I think that the AFFTA system is in a mess right now and it would be interesting to see how much of a mess and to be able to circumvent it.

I’ll talk to my web developers and have them look into databases for this sort of information.

I would also be interested to see databases on rod CCS, hook strengths, tippet diameters and breaking strains. I think we can do all of those things.

I agree Lars, that chopping lines may not be ideal, but holding the line not to be measured off the scales seems to be good enough. I can test this by measuring a few old lines by suspending them and then remeasuring after a quick chop.

I would love to see that excel sheet :D

Thanks guys. What measuring devices are you using? I got one through Graeme but when Flavio calibrated it he found inconsistencies between light and heavy. I would like to invest in a decent set of dealer’s scales :)

Cheers, Paul
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sms
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#9

Post by sms » Tue Apr 30, 2019 12:44 pm

Lars, I do get very close to correct weight via repeating. With 5 times measuring, I do get within 0,1g accuracy.

I use a cheap 0,1g accuracy scale (max 1000g I think). It is quite accurate - I have couple of calibrating weight sets.
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crunch
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#10

Post by crunch » Tue Apr 30, 2019 2:34 pm

I coil the marked length of line and put it to a cup on scale and hold the mark parallel, three inches out of cup rim and keep my hand six inches away same height the cup rim is holding the rest of line and I get very accurate weight readings. When line is stiff there comes a possibility to effect scale reading either pressing line down or lifting up but knowing it it is possible not to cause this error.

Esa

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