Strange question of physics in casting

[Cwab]

Once I have the initial velocity, fps x fps x wt /450240 = the kinetic energy at launch
There that's it, the two things I'm after, initial velocity & initial energy.
I don't care about what happens after the lead is launched.

Cwab can you link to that info please? I've been looking on WSF but haven't found that.

All I think I did was Google lead speed casting or something similar and noted wsf / casting forum and there it was with a few equations to boot and posts were from 2014, should have taken more notice and sorry I did not and not much help I know.

 

[Cwab]

Once I have the initial velocity, fps x fps x wt /450240 = the kinetic energy at launch
There that's it, the two things I'm after, initial velocity & initial energy.
I don't care about what happens after the lead is launched.

Cwab can you link to that info please? I've been looking on WSF but haven't found that.

Found it again, posted by bill bajaj feb 2014, title of thread is.. what is speed of sinker on release?

 

[chesilpete]

 

[Kine262]

Once I have the initial velocity, fps x fps x wt /450240 = the kinetic energy at launch
There that's it, the two things I'm after, initial velocity & initial energy.
I don't care about what happens after the lead is launched.

Cwab can you link to that info please? I've been looking on WSF but haven't found that.

You say you don't care what happens after the lead is launched and you only want the initial velocity but that just doesn't make sense! There is no velocity until the lead is launched as velocity is calculated using speed of travel, distance travelled and direction of travel.

I'm done. I won't be replying any further to this thread.

 

[Angrybear]

The direction of travel doesn't come in to it, it's speed & distance.
the arc & spring of the rod impart energy in to the lead by swinging it, so the lead is in motion before the spool is released & therefore has a velocity before any spool/line resistance begins to slow it

Cwab, many thanks again.

 

[Angrybear]

Brilliant Pete, thank you, that's as close to perfect as I could ask for.
I actually went through a load of his vids yesterday but missed that one.

As I work in feet per sec (fps) & foot pounds energy (fpe) with firearms I've done some conversions.
the cast was 247fps @ 314fpe,
in gun terms an air rifle is allowed 12fpe, over that it becomes a section 1 firearm
.22 subsonic is around 100fpe,
17HMR around 240fpe,
.22 magnum 276fpe,
9mm pistol 360fpe

 

[Cwab]

To add to the pondering the ballistics of “crack offs” whilst casting and leads travelling great distances resulting in the safety considerations on casting fields. Saw one of mine (lead and shocker ) hanging in tree which was scary and I am only a angler playing on grass.

 

[Beach]

To add to the pondering the ballistics of “crack offs” whilst casting and leads travelling great distances resulting in the safety considerations on casting fields. Saw one of mine (lead and shocker ) hanging in tree which was scary and I am only a angler playing on grass.

Did you catch stick fish?

 

[Cwab]

Did you catch stick fish?

No,but nearly a disaster as in next field was sheep so not a good combination and should have known better.

 

[DaveH]

Brilliant Pete, thank you, that's as close to perfect as I could ask for.
I actually went through a load of his vids yesterday but missed that one.

As I work in feet per sec (fps) & foot pounds energy (fpe) with firearms I've done some conversions.
the cast was 247fps @ 314fpe,
in gun terms an air rifle is allowed 12fpe, over that it becomes a section 1 firearm
.22 subsonic is around 100fpe,
17HMR around 240fpe,
.22 magnum 276fpe,
9mm pistol 360fpe

As an ex-air rifle hunter myself (under 12fp) - blimey!

 

[Beach]

No,but nearly a disaster as in next field was sheep so not a good combination and should have known better.

You could of caught a woolly jumper

 

[Cwab]

You could of caught a woolly jumper

My wellies are always in the truck and the shocker would have slowed it down nicely.