Drag increase on an emptying spool

[fishing mike]

Your theory regarding the force is quite correct.
Do you know what the effect of the temperature increase in the drag is?
Normally as temp. increases friction decreases, so do the two balance out?
would be interesting to know if anybody has any experience or input

[REEFMAN]

How does friction decrease with temperature?
On rubber, (eg. tyres) molecular structure changes at high temperatures, thereby INCreasing friction/traction; but as far as I'm aware, temperature will have no effect on solid structures, which cannot change molecular structure, eg Metal and Carbon Drag washers.
If anything, temperature will cause slight expansion of the drag washers, thus increasing friction even more?

[FishStyx]

There are too many variables to be able to state for sure that drag will increase/decrease with heat. It will ultimately come down to each specific design and the materials used in drag mechanism construction. Get to know your specific reel in order to determine what is happening. I suspect that the effect of moment force (full spool vs. empty spool) is far more significant than temperature though.

[Half-Pint]

Perhaps Mike is referring to the fact that the drag grease will liquefy at higher temps leading to oiled drag washers instead of greased

Just remember that long periods of sustained drag pressure will also force the drag grease out leading to dry washers prone to snatching. This is why its important to make sure you use a good quality drag grease and not simply what ever was lying around from the last time you serviced the tractor

[FishStyx]

make sure you use a good quality drag grease and not simply what ever was lying around from the last time you serviced the tractor

I did my Ford 6600s clutch over the weekend... Didn't have any Ford grease lying around but there was a tub of Cals that no one seemed to be using. Now the tractor won't pull implements 

[Kes]

Your theory regarding the force is quite correct.
Do you know what the effect of the temperature increase in the drag is?
Normally as temp. increases friction decreases, so do the two balance out?
would be interesting to know if anybody has any experience or input

What  causes the heat? Its kinetic energy being converted to thermal energy with the  introduction of friction between two or more surfaces. Temperature has an  effect on the coefficient of friction and not the force of friction. Studies  have shown that an increase in temperature having an inverse relationship with  the coefficient of friction but that is material dependent and some studies  have shown proportional relationships with other materials.
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  Its very hard to  determine whether how the force of friction and normal force exerted  on a reels drag by a big fish behaves with the increase in thermal energy  unless we do a scientific test in lab conditions.    Hope this helps..

[Kes]

Need to bump this post up. Someone on Facebook snapped off because he tightened his drag too much...

Coincidentally, we had this discussion just last week on a fishing chat. A question was put to everyone and everyone that responded, responded that they will tighten their drags in a effort to stop the fish.

[fishatic]

And in so doing, quite possibly increase it to above BS of the weakest link.

[travelmember]

Maybe those Facebook guys should spend more time fishing then  


Common knowledge on gameboats and when setting drags in light tackle comps is always set in the temp you fish in. No point setting drags in airconditioned hotel rooms and then fishing in 35 degrees. Your drag WILL change. However, it is difficult to say how. Logic would say the increased temp would decrease tolerances meaning the drag is higher. In practise that is not always the case.


One other practical observation regarding the increase in drag as spool diameter decreases is that it is not linear. Half the spool does not quite equal double the drag - at least on a Tiagra 50W with 600m of line out against a steady 4kg of weight. 

[Kes]

And in so doing, quite possibly increase it to above BS of the weakest link.

Yep, exactly...


Then they blame the braid they using...

[Capt. Hook]

When we get fish that take a lot of line we reduce the drag 1 click once into the backing and further reduce it to 2/3 when halfway into the backing.
Tightening up costs fish and is expensive on line and terminal tackle losses.