Noob possum got pwned by avo cannon

[Dave-]

HD doesn't matter. What is important is the FPS - and how consistent this is.

some new digi video cameras are coming out with 1080p60 which is 60fps 1080 video.

the reason i say 1080 is important is so you can see the lines clearly from a fair distance away which as you state you may have to do to fit in a decent sized ruler.

id cap my video using marks on a wall or a few cones or something, drop the video into after effects or premiere, throw some guide lines in and count the number of notches the avocado moves in 60 frames and say its moving at xm/s

you'd probably even get away with 25fps

the frame rate will be dead accurate and consistent unless you shoot on NTSC then your maths will have lots of decimal places

[pritch]

mine is a perfect fit for a tennis ball, I havn't been able to get it to launch a surf line yet though

I met a guy who had done some work on that.

He was at the stage where he had discovered that a length of Bungee cord as a shock leader was necessary. He was making "bullets" on a wood lathe but until he hit on the bungee idea he had launched a succession of projectiles waaay out to sea. He was attaining very impressive distances but still had his fishing tackle at his feet.

The line would be dealt with similarly to the system you would use with a fishing kite, a spool on the ground beside the gun so that the line could just peel off. No reel is going to spin fast enough.

The "bullets" worked really well but a big chunk of bait and a sinker being dragged behind it through the air would lower the ballistic coefficient dramatically.

As a friendly Police Inspector said though this should be done well away from crowds...

[Rollestonchick]

Omg Tom are you bored this weekend? Pmsl.

[BMW_RACER]

some new digi video cameras are coming out with 1080p60 which is 60fps 1080 video.

the reason i say 1080 is important is so you can see the lines clearly from a fair distance away which as you state you may have to do to fit in a decent sized ruler.

id cap my video using marks on a wall or a few cones or something, drop the video into after effects or premiere, throw some guide lines in and count the number of notches the avocado moves in 60 frames and say its moving at xm/s

you'd probably even get away with 25fps

the frame rate will be dead accurate and consistent unless you shoot on NTSC then your maths will have lots of decimal places

Yeah im sure hes got like 5k or so to drop on a hi def camera and premiere / aftereffects just to try and find out the FPS of his cannon.

[westie]

there has to be someone here better at maths than i am

You lost me at maths

[Nagash]

Err.. not gonna bother reading through 7 pages but working out the velocity should be bloody easy..

V=dt (Velocity = Distance / time)

So really, get a mate with a stop watch, fire the avocado, time from when you launched it to when it lands. Measure the distance, and divide the 2 digits together. Viola, you have it's velocity in metres per second.. Granted it's only the average velocity but you only wanted a rough estimate..


[Edit] Okay, this has been pretty much suggested on every single page... I fail to see where the problem is.

[moT]

[Edit] Okay, this has been pretty much suggested on every single page... I fail to see where the problem is.

there is lots of error involved and gives a false reading shooting the block and working it out that way is a more precice measurement of mussle velocity