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Spool line calculation (11 posts / 2,762 views)
colin333 colin333
Posts: 308
Post #1 14 Jul 2025 15:56
0
I heard that there is an app that works out
How much line to load according to diameter of
The line and backing etc
Can anyone advise please
mark1009
Posts: 4,738
Post #2 14 Jul 2025 18:02
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In reply to Post #1
Pattayafishing.net
finbob finbob
Posts: 3,466
Post #3 15 Jul 2025 12:09
0
In reply to Post #1
calcline
Belch Belch
MODERATORMOD
Posts: 4,660
Post #4 15 Jul 2025 12:33
0
In reply to Post #1
I use this - https://www.omnicalculator.com/sports/fishing-reel-line-capacity

Usually best to back lines with a line of the same diameter to keep things simple . . .however you can ascertain different combos to back/fill spools efficiently with a bit of basic maths!
Duratec
Posts: 302
Post #5 15 Jul 2025 13:37
0
As previously mentioned - calcline

It's android ONLY, and isn't found in the Google play store anymore.

You would need to install it from one of the APK mirror sites such as:-

https://calcline-sea-angler.en.aptoide.com/app
VLT VLT
Posts: 8,995
Post #6 15 Jul 2025 15:38
0
In reply to Post #5
Has anyone got the dimensions of Basia spools?
Belch Belch
MODERATORMOD
Posts: 4,660
Post #7 16 Jul 2025 10:26
0
In reply to Post #6
You should be able to work on those spools by knowing the total capacity (in M) by line diameter (in mm) ?
VLT VLT
Posts: 8,995
Post #8 17 Jul 2025 09:12
0
In reply to Post #7
The stated capacity of the spool (by the manufacturer) is miles off though, hence this measurement tool. The downside with this is that I will only know how much line I need once I have emptied a spool and measured its dimensions.
finbob finbob
Posts: 3,466
Post #9 18 Jul 2025 06:56
0
In reply to Post #8
I use cheap backing and reverse off what i dont need on distance sticks. I bin this and then add the good stuff without wasting too much good line where it does not see the light of day!

Also count the handle turns so I can add line without the faff of reversing off line etc.
Mr-Bean-Laden Mr-Bean-Laden
Posts: 2,243
Post #10 20 Jul 2025 21:24
0
In reply to Post #9
Agree on counting the handle turns. I do 20 turns and measure the length to get a good average. Helps getting excactly 1/3 or 1/2 of a big spool split equally between reels. The app sounds helpful in knowing how much backing to add, I'll be taking a look, cheers
g4fne g4fne
Posts: 15,110
Post #11 24 Jul 2025 23:13
0
I have been doing it this way forever. It is a pain but does seem to work for me. ....

I load one spool with cheapest line (doesnt matter what thickness) and as i load i take the following dimenstions

Empty spool handle revolution.
Mid fill spool handle revolution.
Full spool revolution revolution.

I then strip off this line

I use the average measurement of empty and mid spool, to get an idea of how many handle turns i need for the backing. For my carp reels I aim to leave enough space for approx 250mtr of 12lb/0.33mm mainline. (I have never found the the reel spool capacity info to be far out)

I then fill to the top with my mainline of choice, counting turns to confirm I have approx 250mtr loaded (using the average of mid spool / full spool revolution measurement).

Thankfully, working out how much backing needed, is a job I only need to do once on one reel when i first get them


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