OK, I see what you're trying to do MM. Thanks for the explenation Dominick. About the line retrieve though, how can a manufacturers specify how much line a reel retrieves per crank when it changes constantly,that's the reason i compared the 10/0 with the 4/0. It all comes down to spool diameter ratio and where the line is sitting on the spool. It might just be me that doesn't get it.
Back to your topic MM, sorry for bringing it off track. Keep your ideas coming, I'm sure we will all benefit by them. Sal
The way I do it, is it is on the average spool diameter
example reel specs:
20 inches per turn
[Pi = 3.14]
Line per crank / (Gear Ratio x 3.14) = Average spool diameter (Inches)
So in this example
20 / (2.8 x 3.14) = Average spool diameter (Inches)
20 / 8.792 = 2.2748” Average spool diameter
So it will vary, but it's the average
For spool capacities I'm trying a TCF (total capacity factor)
To try & know capacities for different diameters on a given spool & figure backing or top shots
example spool capacity specs:
spool capacity (0.55mm/320m) converted to inches/yards = 0.021653543307/349.95625547
Line capacity (Yards) x Line diameter (Inches) = TCF (Yard-Inches)
So this example
0.021653543307 x 349.95625547 = 7.577792933 TCF
So by using rounded TCF of 7.5778 for capacity of spool
Different line diameter example = 0.018"
TCF (7.5778) / New line diameter (0.018") = New capacity
7.5778 / 0.018 = 421 Yards of different line
Say you want 30# mono backing (but don't know how much) with 100 yard 50# braid topshot
example, 30# is 0.022" & 50# is 0.014"
First figure the braid TCF
100 yd x 0.014 diameter = 1.4 TCF
Remember the TCF of spool was 7.5778
So subtract the braid TCF from the Spool TCF
7.5778 - 1.4 = 6.1778 mono TCF
So using 2nd Formula, plugging in mono TCF....
Mono TCF (6.1778) / 30# mono diameter (0.022") = mono needed
6.1778 / 0.022 = 280.81 yd
Now load 281 yd of your 30# mono & then you will have the room for your 100 yd 50# braid topshot?