evilleppy87

evilleppy87 OP t1_j7wvhtj wrote

The beaches of the Pacific Coast, among other places, are littered with large logs. Sometimes the tide is such that it pulls these logs into the surf where they can knock down and crush unaware beachgoers. There are signs along the coast warning visitors, "Beach Logs Kill!" It's genetally more of a problem in areas with a densely forested coastline.

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evilleppy87 t1_j64igaf wrote

We have 3 seperate varieties of this at our state fair:

One looks like a flying saucer you get inside. Pretty much no rules, and you always have some brave soul that stands on the backrest with their head toward the center so that they are horizontal with the ground.

Another tilts up at like a 45° angle part way through the ride and you can only stand against your backrest. If the ride fails, there's a flimsy little waist-high chain to "hold" you in.

The last one looks like what is portrayed in this picture with one continuous carpeted wall. The floor drops down while you are stuck to the wall, and you can get horizontal like the girl in the picture. Eventually they slow the ride and you slowly slide down the wall to the lowered floor.

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evilleppy87 t1_iwe8c32 wrote

Reply to comment by Snufflepuffster in How an engine works. by ooMEAToo

I'm aware that there's going to be some variability, it just seemed to me that closing 90° before TDC was a little extreme, especially considering in most cases the exhaust valve closes a little after TDC

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evilleppy87 t1_iwdssjt wrote

Reply to comment by drsbd in How an engine works. by ooMEAToo

Shouldn't it be open til the piston reaches TDC? If so that means with those cams it should open later in the exhaust stroke. It seems like they start opening just before the piston reaches BDC, and close half way up the exhaust stroke.

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