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Leftystrikesback

Member Since 22 Oct 2008
Offline Last Active Jun 18 2011 01:21 AM
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Posts I've Made

In Topic: Does "running" with your gun raise the velocity?

14 October 2009 - 07:34 PM

Running forward increases the velocity of the shot by the velocity that you are running. It doesn't increase the muzzle velocity (the speed that the ball exits the barrel), but since the barrel is moving forward now as well, you add that speed onto the muzzle velocity to get the total velocity. If you're moving fast, that might add 20 fps (that's like a mad sprint at 14 mph). If you're Usain Bolt, then it might add 40 fps.


Either everyone read my post and just rephrased what I said cause it was so briliant or no one reads my posts :(

Must be the new avatar...

In Topic: Does "running" with your gun raise the velocity?

12 October 2009 - 12:29 AM

Running forward increases the velocity of the shot by the velocity that you are running. It doesn't increase the muzzle velocity (the speed that the ball exits the barrel), but since the barrel is moving forward now as well, you add that speed onto the muzzle velocity to get the total velocity. If you're moving fast, that might add 20 fps (that's like a mad sprint at 14 mph). If you're Usain Bolt, then it might add 40 fps.

In Topic: O.K. Gordon and Bryce , a little vid for you.

02 October 2009 - 03:27 PM

These graphs are interesting, take a look at the trajectories!

at 280-290 fps, the spyder drops 12 inches but the eg0 / dm9 only drop 6.8 inches...
Even the two 50 cal markers have a difference of 2 inches...

Those must be measured at different distances, but even so, why a 2 inch difference between a tippman 98 and a spyder? You think they were using a flatline?

Lots of fun number fudging going on regardless!


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In Topic: Conducting my own test, HELP

01 October 2009 - 05:44 PM

what exactly are you testing with this test? If you want to compare overbore to underbore then you need multiple overbored barrels as well.

to get good results you don't need to fill your tank after every barrel, as long as you keep it above 2k psi then it shouldn't be affecting consistency.

In Topic: Rapid Prototyping Service

25 September 2009 - 04:38 PM


By "Material is not exceptionally strong ," could it be strong enough for a trigger frame?



Does anyone have a 3D scanner that I can send parts to be scanned?



That's roughly 60% of decent delrin strength, for reference. I wouldn't make a UL frame out of it, but a normal one should hold up...IMO.


It's hard for me to answer "is it strong enough" questions because I only have experience with smaller test models. Once we get it up and running making our own parts I should develop a good sense of how strong the parts are pretty quickly.

given the right wall thickness it should be fine for a trigger frame.