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Saturday, April 20, 2013

Foam, Firepower, and SCIENCE!!

So, some of you guys may have heard of a blaster that's been leaked called the Rapidstrike.  Some of you have even seen pictures and video of it firing, like the one below (thanks to Urban Taggers for telling us about it).


Not bad new kid on the block, not bad.  Certainly faster than the Stampede ECS, out of the box.  Little noisy, but still impressive.  But somewhere along the way I saw someone say that this <sarc>Rapidstrike</sarc> was faster than a modified Stampede.  Now this was an affront that, not only as a Stampede owner but a man of SCIENCE, I could not let go unchallenged.

Without even leaving Youku, I found a video of a modded Stampede.  Admittedly I was looking for a stock stampede video for a baseline, but we know for a fact already that the Rapidstrike is faster than a stock Stampede.  That video is linked HERE.

From here it gets a bit more technical.  It seems obvious watching the video that the modded Stampede is faster, but for confirmation and my own edification i decided to trim out the relevant sections of video to compare length.  This was frustrated as nothing i found could rip FLV to a simple AVI.  So i settled for second best, an audio analysis.  I ripped the audio to WAV format and tossed it into Goldwave, an audio editor I've used for years and cannot reccomend highly enough, and started trimming down the audio to only the relevant bits.  This was easy with the stampede because it has an easier to pick out signature in the relative silence of the video, aided by the fact that the user fired off an entire mag.  Second came the Rapidstrike audio, picking the right stuff took a little more care, as there was the background noise of those Russel's Teapot forsaken flywheels, and additionally there were a couple dry shots at the end.  After trimming it down I had two files of full auto firing for both blasters.

Guess which one's on top, anyone?

The length of the audio for the Rapidstrike and Stampede were 5.220 and 3.295 seconds respectively.  So from there it's easy, just 18 divided by the length of the audio sample right?  Wrong!  The Rapidstrike user fired off two singles before his full auto burst, Leaving him with 16 in the mag to the Stampede's 18.  The results are below and will later be updated with my own Stampede and a couple other blasters for comparison's sake.
Math, bitches!!!


A graph for those who prefer to see it.

11 comments :

  1. Lets run mine on your battery rig and time it, then on 6 and 8 LiFe cells, too.

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  2. I love this approach. I wonder, what can you tell us comparing the pitch of the flywheels to that of a stock stryfe?

    We can assume that a higher pitch would mean faster flywheels giving us a higher dart velocity. Do you think you could work your magic and find out how powerful this chap might be?

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  3. have to try hunting up a mic. I've got one around but i'm not sure where it went. my garage tests were conducted using a digital drum trigger wired to a rockband game controller and set up to give a pulse of 1/100th of a second ech time triggered. time was measured from teh beginning of teh first peak to the beginning of the last peak. So a 6 round mag yielded 5 useful datapoints.

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  4. Also, some stuff failed tomtriggernthe sensor. My best guess is that were barely over the sensativity threshold of the sensor.

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  5. I would like to see the stock ROF of the stampede and nitron for comparison

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    1. We no longer have a stock stampede handy to get an ROF off of but we DO have a nitron that will be getting clocked when i can get it from Damian. This Nitron will be getting the Bobolo treatment and end up in the hands of my roommate Deadman.

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    2. Correction, we DO have one unmodded stampede. Mu actual ecs-50 hasnt been touched. I dont even think ive punched it

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    3. This comment has been removed by a blog administrator.

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  6. Bobololo's nitron got a ROF of 567 r/min

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  7. Brilliant, Animal! Great approach. This is way better than the asinine bantering style typical in the Nerf community. Props for thinking a little outside the box (no pun intended.) Love it!

    ReplyDelete
    Replies
    1. We try. The next few articles i'm writing are for a series on gearing up. You guys that enjoy our blog can contribute with photos of your best and worst nerfing clothing and gear. I'll drop an email address in a post as soon as i get one opened up.

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