Wikipedia:Featured picture candidates/Walschaerts gear

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[edit] Walschaerts gear

Walschaerts valve gear in a steam locomotive. In this animation, the red color represents live steam entering the cylinder, while the blue represents expanded (spent) steam being exhausted from the cylinder.

This nomination reflects the discussion in the recent (aborted?) Steam locomotive nomination.

I edited the original image thus: removed the registration mark in the upper left corner, slowed down the animation just a tad, removed the signature (the author is credited on the image page, to which I also added his numbered, explanatory drawing). This image is in the Walschaerts valve gear article. (Note: Please don't resize the image, it breaks the gif animation.)

• Nominate and support. --Janke | Talk 10:47, 18 April 2006 (UTC)
• support, nice img. --vineeth 11:05, 18 April 2006 (UTC)
• Support. Clear and informative. bcasterline t 15:47, 18 April 2006 (UTC)
• Support - great.--Deglr6328 16:55, 18 April 2006 (UTC)
• Support great animation.--Wingchi 17:38, 18 April 2006 (UTC)
• Support could be smother but it's not bad at all. It may just be my computer anyway. --Lewk_of_Serthic _contrib ^talk 20:20, 18 April 2006 (UTC)

It's not your computer... The animation consists of 12 drawings, displayed at 4 frames per second, thus it is intentionally slowed down so individual details can be studied in motion. The only way to get smoother animation is by using more drawings (which we don't have) and a faster display rate, which would require more computer power. (See persistence of vision for more info.) --Janke | Talk 05:27, 19 April 2006 (UTC)

Oh, then it is my computer to a degree, I'm getting closer to 2 frames per second. (it's a rather old computer...)--Lewk_of_Serthic _contrib ^talk 19:15, 19 April 2006 (UTC)

• Support Looks good, looks acurate, looks to become featured. Its a winning hand. TomStar81 22:26, 18 April 2006 (UTC)
• Support very nice, first though t the labels should be put on it, but I now think they are better on the image's pagesay1988 03:25, 19 April 2006 (UTC)
• Support... and put it on the commons. gren グレン 00:55, 20 April 2006 (UTC)
• Support Another great animated gif. Staxringold 14:56, 20 April 2006 (UTC)
• Support -- but the caption could explain a little more about what the pink vs. blue colors mean. It looks like the pink is hot steam entering the cylinder, whereas the blue is exhaust, correct? --Elkman - ^(talk) 22:58, 20 April 2006 (UTC)

You're right. But the caption here is different from what it is (was) in the article. Actually, there's a description on the image page itself. There, I moved up the caption to below the animation, and clarified the wording, and also added it to the caption here, and in the article. Thanks for pointing this out - as a steam buff, I seem to take some things for granted... ;-) --Janke | Talk 06:31, 21 April 2006 (UTC)

• Support nice animation. Pegasus1138^{Talk | Contribs | Email} ---- 03:46, 22 April 2006 (UTC)
• Support Yep, good animation. Need more animations as featured pictures here. --Thorpe | talk 14:42, 23 April 2006 (UTC)
• Support great! Scriberius 20:40, 23 April 2006 (UTC)
• Support very clear ~ Veledan • Talk 17:52, 24 April 2006 (UTC)

Promoted Image:Walschaerts motion.gif unanimously ~ Veledan • Talk 17:54, 25 April 2006 (UTC)