line conversion

T

Trevor Hemborough

Member

Joined

Apr 29, 2003

Messages

11

Reaction score

4

• Nov 21, 2005

• #1

Could anyone please let me know what the conversion is for mm to lbs for line strengths. Thanks in anticipation. Iam always having trouble converting when I see them in the magazines.

 

R

Ron 'The Hat' Clay

Guest

• Nov 21, 2005

• #2

This is virtually impossible.

The diameter of polyamide lines vary so much, eg unstretched, pre-stretched or PVDF coated for the same breaking strength of line that no-one would be prepared to calculate a conversion chart.

Many lines have the diameter and breaking strength stated on the spool. But even then the figures are not always accurate.

 

G

Ged

Guest

• Nov 21, 2005

• #3

Give up Trevor.
As Ron says, it's nigh on impossible.

 

F

fred hall

Well-known member

Joined

Feb 3, 2003

Messages

76

Reaction score

9

• Nov 21, 2005

• #4

When I retire I will construct a formula to answer this one Trevor. It will however have to wait in the queque-inventing the warp drive is first.

 

R

Ron 'The Hat' Clay

Guest

• Nov 21, 2005

• #5

The warp drive will be easier Fred.

It's also a lot easier to explain string theory.

 

T

Trevor Hemborough

Member

Joined

Apr 29, 2003

Messages

11

Reaction score

4

• Nov 22, 2005

• #6

Thanks guys I didnt think it was so complicated. I will just have to look at the packet as suggested by Ron. Thanks anyway. Just thought I would ask.

 

W

Wag

Guest

• Nov 22, 2005

• #7

While we're on the subject, can anyone explain why line has started to be rated by diameter?
It is only a valid measure if all lines are of the same material, which obviously they are not.
The right line for any given circumstance is surely a complex mix of breaking strain, wet knot strength, diameter, buoyancy, abrasion resistance, stretch, suppleness,refractive index, colour etc.
Diameter would seem to me to be relatively unimportant.

 

R

Ron 'The Hat' Clay

Guest

• Nov 22, 2005

• #8

I think the diameter of monofilaments is important because we can get an idea of how stiff the line is.

For a homogenous material stiffness varies with the fourth power of the diameter.

This means if you double the diameter you increase the stiffness by 16 times. And ther less stiff a line is the more naturally a bait will behave in the water and the more bites you will get.