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Why the wankel engine was banned from the 24 Hours of Le Mans

Posted by hansolo2024@reddit | cars | View on Reddit | 37 comments

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37 Comments

carsandsodabars@reddit

I always thought it was because people were butthurt that the 787 did so good. Didn’t know it was because they were trying to align with Formula 1 rules.
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The_KMag@reddit

probably one of the greatest myths in all of motorsports, it's really frustrating to see that some people to this day still believe that rotaries were disallowed from le mans for being 'too good', or whatever
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TVR_Speed_12@reddit

So rotaries are more reliable than piston engines, got it
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Montjo17@reddit

It is also worth noting that because of the new F1 engine rules at the time, most of the field were running basically untested new cars while Mazda had been running theirs for years. Plus the other legacy teams all got a bunch of ballast which the 787 avoided thanks to a quirk of the rules and its rotary engine. So in effect you had a bunch of very fast fragile cars, a bunch of fast reliable cars with too much ballast to be competitive, and the 787b. No surprise it won
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stackstackstack@reddit

Every car cheats and bends the rules, the 787B isn't unique in that regard. You'll always hear about how the winner does it. Most cars were running iterations of the engines they had used in previous years. Some had actually planned to run the new engines and instead ran the previous engines.
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Montjo17@reddit

My point is that all the old engined cars bar the 787B had a substantial amount of ballast added to prevent them from being faster than the new ones. And I know everyone bends the rules in motorsport; that's not the point here. Mazda were not bending the rules, but substantially aided by them in this one particular race. All that is to say that the 787B was nowhere near as good as the legend has it to be
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stackstackstack@reddit

They specifically argued to not receive the ballast and won their case. The 787B wasn't skipped over, it was going to get it. That is the bending.
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Haematobic@reddit

> The 787 was one of the slowest cars in the field, and their win was due to reliability rather than outright pace. "Slow and steady wins the race", in car form.
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The_KMag@reddit

absolutely, i don't want to take anything away from mazda, the fact that they managed to stick with a completely different concept to everyone else and have it pay off is nothing short of incredible. their win at le mans embodies the spirit of technology and engineering in racing. the only problem is the people who exaggerate and say that the europeans were jealous and banned the rotary because it was overpowered, it takes away from the underdog narrative of the actual story imo
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Clerence69@reddit

A wins a win! Fastest only counts if you finish. And I make sure to always finish fastest.
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stackstackstack@reddit

While this article is full of incorrect claims, the alignment to F1 engines is correct. The rotary has never been explicitly banned, the alignment to F1 was the only reason it wasn't allowed, much like many of the piston engines that had been racing at the time were no longer allowed. In addition, the alignment with F1 was determined before Mazda ever won, they went into the race knowing it was their last opportunity before the new ruleset. Rotaries were back to racing at Le Mans by 1995.
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AdventurousDress576@reddit

BTW, rotaries are legal in the Hypercar class. Mazda could build a rotary LMDh if they want.
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italia06823834@reddit

Sadly Mazda doesn't have the money to do it. They axed the prototype program a few years ago.
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Strikerrr0@reddit

I'm curious if they could enter a GT3 since the new Toyota/Lexus GR GT3 cars supposedly shares a chassis/is derived from the Mazda RX Vision GT3 concept. https://www.carscoops.com/2022/01/the-toyota-gr-gt3-coupe-looks-suspiciously-similar-to-the-mazda-rx-vision-gt3-concept/
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stackstackstack@reddit

They could have been building rotary cars for LeMans for the past 30 years... Hypercar didn't make them legal, it just noted that they are.
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Haematobic@reddit

*Be still my beating heart...*
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More_Information_943@reddit

The 787 was easily the slowest car in the field, it was surprisingly the most reliable car in the field so when everything else had broke it was left shrieking like a harpy.
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stackstackstack@reddit

> The 787 was easily the slowest car in the field Now calling it the slowest is wrong in the opposite direction of saying the rotary dominated! It was a mid-pack car in terms of speed, it wouldn't have had a chance to win just on reliability. Each of the 787/787B's had a different configuration which allowed different top speeds.
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Haematobic@reddit

...you can't just say "shrieking like a harpy" and not post [the fly-by video](https://youtu.be/sxXtpMngivM)!
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More_Information_943@reddit

I do love the stories of the track supers telling each other they were coming
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kgruesch@reddit

It didn't do so good though. It won LeMans out of attrition and never won before or again. The sister car in GTP, the RX7-92P was gorgeous, but got its ass handed to it every race because it just didn't have the power to hang with the turbo cars on the straights. The sound is incredible though. I got to hear the 792ps scream through the woods at Road America when I was a kid and it was amazing.
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TVR_Speed_12@reddit

Rotaries burned oil before it was cool
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Greedy_Equipment6535@reddit

Cool race motor and great if you want to Rev the heck out of it. Crappy motor to have to live with and should not be in a consumer vehicle. I have owned 4 fds and swapped three of them.
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deleted_by_reddit@reddit

[removed]
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overhardeggs@reddit

I didn’t know that rotary engines are more efficient under load than a typical piston engine, but are actually less efficient at idle comparatively.
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darkpaladin@reddit

So would a hybrid rotary make sense where you hand off high load but idle/low loads run off electric? I've always had a soft spot for wankels.
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overhardeggs@reddit

That’s probably the idea behind the new mx-30 R-EV that Mazda is releasing
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More_Information_943@reddit

Packaging is probably another huge reason.
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dbone_@reddit

Absolutely. Power to weight is amazing and weight is the enemy of efficiency.
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5kyl3r@reddit

3 power strokes per single rotation, per rotor, probably contributes to this too
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More_Information_943@reddit

It has less to do with that as it has to do with the physical size of the engine, being able to fit a whole engine in the space of half or a quarter of another engine allows you more space for other shit in the battery
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Kriffer123@reddit

I had thought it was because rotaries are very compact so they don’t have to change around their battery electric/plugin platform as much as they would have to to accommodate other gas range extenders
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italia06823834@reddit

More likely (and what I think Mazda is doing with the MX-30) is the Rotary wikl only function as a generator for electricity, and it just runs constantly at its peak efficiency.
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Raving_107@reddit

What a horrible article to read, its like it was written by someone that has no idea what they are talking about.
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LolCalmDown-Cope@reddit

Because they sound awful?
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Drzhivago138@reddit

Forbidden Dorito
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