Knight Sleeve Valve Engine

[jaekib]

Thanks for putting this up. (and turning the crank:^) I have a much clearer idea of the mechanism now. Can't sort out the inlet stroke unless this is a two stroke, but still very useful video.

Cheers.

[howlerbike]

@jaekib The exhaust port is on the left side, and intake on the right. If you look at the ports themselves you can see when they get their opportunity as the apertures in the sleeves present themselves.

[Clunk49]

Thanks for the video.

My late Grandfather, Mr. G.P. Stewart, had a Willys-Knight car as a young man in the early 1900's and bought a running engine shortly before he passed in 1976. He used to start the engine and describe the virtues of a sleeve valve engine while adding the proper amounts of Marvel Mystery Oil to the fuel.

The engine was sold to Willys-Knight collectors so we know it's in good hands.

[chaosopher23]

That's a really long stroke engine!

[yamahabansheerider]

are these engines still being used in anything today?

[2boredfortv]

its like a 4 stroke 2 stroke. hmmm

[homerunhita12]

what a headache

[TheCottonTop]

HAHA omg. OHV even flathead, anything with a cam shaft is better than that!

[nashtwin8]

@TheCottonTop Actually, when these engines were first introduced 100 years ago, they were quite a bit better than engines with camshafts (poppet valves). For one thing, they never needed a valve grind, which regular engines needed every 25,000 miles or so. They were also a lot quieter, because the valves didn't make any noise slamming against their seats. Finally, where a poppet valve degrades as it wear, reducing compression, sleeve valves actually form a better seal after they carbon up!

[oiseautempete]

This system was use on the Panhard Dynamic, very silent and soft, but he's durabilty was poor cause fast wear (30 000km run maximum) and the oil consumption was enormous...

But Bristol simplify the system (only 1 sleeve), whit a excelent durability and acceptable oil consumption, and built very good aircraft engines with high reliability and low consumption, like the Hercules or the Centaurus.

The Hercules was buitd up to 1970' under license, by SNECMA for the Nord 2501 "Noratlas" aircraft.

[snipermiller17]

iv never heard of this type of engine

[dvdprui]

I kinda wonder, with the push for more efficient engines with higher outputs and better-quality lubricants if the sleeve valve could be viable today for high-rpm engines?

[Bumper3D]

Thanks a lot, I always wondered how these engines worked. Kind of clears it up. :)

[BrenGun1971]

Thanks for this. It really clears it up. I was wondering how a sleeve valve engine worked and couldn't get it right in my head.

[ChargerMiles007]

Hey, thanks for the vid, I have never seen one of these in motion before.

Check out my sleeve valve lawnmower engine vid! It revs 6400rpm.

[joness105639]

It seems to have a lot longer exhaust duration than intake duration, or is the guy turning the crank backwards?

[oisiaa]

The crank is labeled with an arrow so I assume it is being turned in the correct direction.

[joness105639]

maybe the timing of the "cam" is a bit off. Then again I only know pushrod poppet valve engines.

[hoggdawn]

Thanks---always wanted to know just how one of those things operated!

[pilatunes]

Do the sleeves that move up and down run directly of the crankshaft? I couldn't quite see.

[oisiaa]

The sleeves are geared at 1/2 crankshaft speed, you can see the mechanism that does this starting at :40.

[oisiaa]

You can see the two red discs on the front of the display. The first one is the crankshaft and is connected to the handle. The second one is the smaller crankshaft that is connected to the sleeves.

[pilatunes]

Thanks!

[wrangleroly]

Oh, sorry, it's the 1926 Willys Knight Model 70 featured in the other video when you search 1926 Willys Knight. Had it out on a nice drive the other day. 82 years old and still purrs like a kitten. Where was your video taken?

[oisiaa]

I took this at the 2008 Midwest Old Threshers Reunion in Mt. Pleasant Iowa.

[wrangleroly]

I drive one of these almost every day, finally have an idea what's going on in there! Thanks for posting

[oisiaa]

What kind of car?

[bikersrule07]

very intresting,tryed to understand how a sleeve valave enine worked out of drawings but that explaned everything,i would love to see one in real life.