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This is a link post Transparent Wankel
Ever wondered what a Wankel rotary engine looks like inside while it's actually running?
(, Sun 13 May 2018, 21:24, Reply)
This is a normal post Like having an angry wasp in my ear.
Delightfully simple little engine, I've only seen an old Zundapp one before IRL.
(, Mon 14 May 2018, 2:21, Reply)
This is a normal post Arent RX-8's rotary?

(, Mon 14 May 2018, 6:18, Reply)
This is a normal post Yes,
and the old BMW M1, The Mazda RX7 were the most common I believe and interestingly (for me at least) a selection of Norton bikes
(Edit-sorry, having actually watched the video now I see it mentions the above)
(, Mon 14 May 2018, 11:53, Reply)
This is a normal post
The BMW M1 wasn't rotary, it was a straight-six.
(, Mon 14 May 2018, 13:43, Reply)
This is a normal post I stand corrected
I don't know why but for some reason I had always thought it was their only foray into Wankel usage.
(, Mon 14 May 2018, 15:36, Reply)
This is a normal post They might well have a couple in there.
Miniature wankels are sometimes used in seatbelt pretensioners.
(, Mon 14 May 2018, 16:25, Reply)
This is a normal post I thought they were driven by pyro charges?

(, Mon 14 May 2018, 18:32, Reply)
This is a normal post The charge drives a tiny little wankel motor.
https://jalopnik.com/watching-a-seatbelt-pre-tensioner-work-in-super-slo-mo-1790017803
(, Mon 14 May 2018, 20:05, Reply)
This is a normal post TIL
Still can't get my head around how that would operate though, or why it would be considered better than an explosive in a piston.
(, Mon 14 May 2018, 20:23, Reply)
This is a normal post At a guess
It acts on the spool, therefore a Wankel is actually a great choice because you're getting rotational energy out, with presumably far more torque than a mini turbine.
(, Mon 14 May 2018, 22:12, Reply)
This is a normal post How they work is easy.
Instead of putting fuel+air in you just use compressed air. With Wankels you don't have any valves to worry about. It's the same basic principle as a steam engine, where all you're interested in is having a ready supply of a high-pressure working fluid and you're not especially bothered about how the energy gets put into it.

As to why, I imagine it's though the force is spread over a comparatively longer time rather than all at once, which might hurt the passenger more than the crash would, and they may be cheaper to recharge than the piston kind.
(, Mon 14 May 2018, 22:34, Reply)
This is a normal post So itís an external gas generator, using the wankel rotor as a turbine?
Iím still puzzled by the whole concept as that means the suck and squeeze phases donít happen, the bang phase becomes the power phase, and blow carries on as normal. Youíd need to vent the first half of the chamber to prevent any compressive resistance.
(, Tue 15 May 2018, 11:16, Reply)
This is a normal post good fact!
We need to know which cars use them because it would be awesome trivia killer -
what cars use a Wankel enginer?
All of them - I bet you a million pounds..
(, Mon 14 May 2018, 20:41, Reply)
This is a normal post How about the first car to use one?
A huge failure, but a great looking and really valuable car, the NSU RO-80. I used to know where one was rotting away.
(, Mon 14 May 2018, 23:55, Reply)
This is a normal post I enjoyed that and found it surprisingly easy to wank to

(, Tue 15 May 2018, 2:24, Reply)