Head length vs head weight

[Bernd Ziesche]

I’m sure we have all experienced conditions at sea level that are distance killers. Fog, mist, dew fall. I generally don’t winter cast but I hear it is particularly difficult. Dmitri in Estonia told me this.

Just look up the results from the indoor event in Tallin. Anything above 32 meters 5 MED was very very good.
Outside we were also discussing air viscosity. I remember no one yet hat figured out why in some days you die at 30m while a day later 33m is possible both with zero wind. All I know is, that these total killing days are rare and I never could nail down the main reason for the killing.

[VGB]

Fog, mist, dew fall.

Agree with all those, I’ve wondered if it was something to do with carrying a mass of water but the skin drag should wipe it dry

[Torsten]

Hi Bernd,

added the topic to the physics subforum.
Maybe you're missing the different phases of the cast, we have for instance an acceleration phase of the line and an unrolling phase. The drag force due to skin friction / from drag is a dominating factor during unrolling of the line, but less while accelerating.

Greetings,
Torsten

@Gordy
Thanks for the skin friction computations, I did also my own and got something in the ~0.1 - 0.2 N difference for the two lines; at the moment I'd say this suggest to me that's not really something that you can feel. I'll check my equations and I'll open then a topic in the physics subforum (next week)

Hi Torsten, Gordy, Vince,
I have zero clue, what such numbers mean in terms of feel. How much Newton can I feel and where might be the end of feelabilty?
Paul could add a good ten feet carry when being in 1000m altitude (Calgary). The difference in air density isnt much on paper. But 10 feet is a lot. My experience about altitude and carry is similiar.
If skin friction plays little part.... what am I missing?
Thanks
B

[Bernd Ziesche]

Thanks!