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Peter

Member Since 20 Oct 2005
Offline Last Active Feb 06 2020 04:33 PM

Posts I've Made

In Topic: Nerf Crossbolt Minus The Crossbow Arms

17 April 2015 - 08:50 PM

Maybe dampening of some sort?

In Topic: Greatest Game That You Have Ever Played In Your Life

24 December 2008 - 03:12 AM

Chrono trigger.

In Topic: Winter Ohio War

14 December 2008 - 05:01 AM

Awe. I can't be there. Too bad : (

Oh my gosh, I just saw the pictures of the park, and I can attest, that that park rules and that playground owns. I played there many times as a kid!


Hope you guys have fun this year like we did last and maybe I'll be there for 09'.

In Topic: Photogates And Nerf

03 June 2008 - 01:59 PM

Making a new gun for each shot in full on inconsistent.
As long as the trigger was pulled swiftly and with relatively the same amount of force, there should be no problem, and if for some reason it did matter, all he needs to do is go with a short swift trigger pull with more force, and a longer less forced trigger pull and retest..

Heat and humidity? This only matters if you tested in different locations.

Theoretical muzzle velocity? Why? So there can be more error within findings of the spring constant and the friction coefficients?




This sounds like it would be the problem, of course there is going to be lost pressure, the gas wants to fill the area with the least resistance first, that being the looser fit of the darts in the clip.

In Topic: Universal Range Testing

03 June 2008 - 01:49 PM

No, you're not right. Because there is no relationship between what the range should be and the height of the gun.

Please tell me you're joking?

You also speak of square roots and why they have no place? I am not supporting anything said before as it doesn't make any sense at all, there is no constant ratio between initial height and final displacement.

However: xfinal = xinitial + vo*t - .5at^2

likewise, for gravity we are looking at:

y-final (0) = y-initial - 4.9t^2

so

sqrt(-yinitial/4.9) = t

therefore: xfinal = vo*sqrt(-yinitial/4.9) - [ .5a* -yinitial/4.9 ]

There you go. Initial height (yinitial) matters very much to the final range of your gun. However, like I said before, there is no constant between the final range and initial height.

Initial height has a huge factor in the final displacement of a projectile, but it doesn't really matter for nerfing, since the average human height is going to be around 5~ feet anyway.