Wikipedia:Featured picture candidates/Wankel Cycle Animation

Wankel Cycle Animation edit

The Wankel cycle. The "A" marks one of the three apexes of the rotor. The "B" marks the eccentric shaft, turning three times for every revolution of the rotor.

edit 1: without jittering

This animation does an excellent job in explaining how the Wankel engine works. I would not have been able to understand the engine without the aid of this animation. It is labeled and highlights each step of the cycle.
It appears on the Wankel engine article.
It was created by Wikimedia Commons user Y_tambe.

Nominate and support. - Riguy 00:51, 4 December 2006 (UTC)[reply]
Support- Very descriptive and well done animation. --Lewk_of_S e rthic _contrib ^talk 01:32, 4 December 2006 (UTC)[reply]
Oppose for now. A lot of static (?) along the black lines and the text. If this could be fixed, then I'd support. tiZom_(2¢) 01:36, 4 December 2006 (UTC)[reply]
Oppose the way it is now. A lot of dithering all over the place. Also aren't all the stages happening simultaneously? Why does each stage name light up like that? --⁪froth^{T C} 01:47, 4 December 2006 (UTC)[reply]
- Comment - Well, I think it makes it simpler to show the rotation one step at a time. Besides, the sparks show up on each rotation, so you know it's constant. But still the dithering (yeah, dithering, that's the word...not static!) is a problem. Oh and also, if someone's going to fix this up, be sure to close the lines on the left side - the way it is now, it looks like some exhaust could seep into the intake! :o) tiZom_(2¢) 02:18, 4 December 2006 (UTC)[reply]
- Comment Here is the source for the file if someone knows how to modify it: [1]
Support per ~~above points~~ nom. Sharkface217 04:54, 4 December 2006 (UTC)[reply]
Comment It is not really dithering, it is caused by the jitter option of povray, which is sometimes useful to improve antialiasing and is enabled by default, but introduces random variations from one frame to the other. Considering the lines on the left side, I don't know if it is possible to close them; I'm inclined to think it is a feature of the engine: if there is space on the right side there must be space on the left side. --Bernard 09:57, 4 December 2006 (UTC)[reply]
Question In the article it is explained that there is a single ignition per rotation. Then, why are the plugs sparking when there is no ignition? Alvesgaspar 11:16, 4 December 2006 (UTC)[reply]
- It is one ignition per rotation of the eccentric shaft (B), and three ignitions per rotation of the rotor (A). --Bernard 12:00, 4 December 2006 (UTC)[reply]
Support Does an excelent job of illustrating a difficult concept. revised version is clean and attractive. I agree only highlighting one of the ignitions helps clarity, but perhaps the caption could elaborate? -Spyforthemoon 20:43, 4 December 2006 (UTC)[reply]
Comment I'm inclined to support, but there are two things that befuddle me: 1. From the looks of it, the excentric shaft (B) rotates, but the gear remains static. So is the gear disconnected from the shaft? And 2. I'm also befuddled by the fact that in one case the spark plugs ignite the chamber and in two cases nothing happenes. I wonder if the colors could be applied to all chambers, the A, B and text labels be removed, and the explanation be provided in the caption: "Intake (light blue), Compression (dark blue), ignition (dark red), Exhaust (light red)". ~ trialsanderrors 23:31, 4 December 2006 (UTC)[reply]
Weak oppose, center shaft rotation isn't obvious, and that causes confusion. Night Gyr (talk/Oy) 06:59, 9 December 2006 (UTC)[reply]

Strong Support: I've never supported anything before but I find this excellent animation commentworthy. This should definately be a featured picture in the near future.

Not promoted Raven4x4x 06:32, 12 December 2006 (UTC)[reply]