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| Did something different this weekend, Rode the Rails. (Page 3/4) |
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Rickady88GT
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OCT 13, 11:18 PM
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williegoat
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OCT 13, 11:22 PM
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| quote | Originally posted by blackrams:
BTW, that 2 stroke horizontal engine fires when both cylinders are Top Dead Center (at the same time). I still don't understand that concept but my BIL has rebuilt three of them and they do PUTT PUTT right along.
Rams |
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You have never seen the starter motor in an ME-262?
In every horizontally opposed twin that I have ever seen, the pistons reach TDC at the same time. Otherwise they would shake like a paint mixer. Think VW and BMW.
A two stroke fires (probably a few degrees before) the top, every time. (I know you know that)
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blackrams
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OCT 13, 11:35 PM
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| quote | Originally posted by williegoat:
You have never seen the starter motor in an ME-262?
In every horizontally opposed twin that I have ever seen, the pistons reach TDC at the same time. Otherwise they would shake like a paint mixer. Think VW and BMW.
A two stroke fires (probably a few degrees before) the top, every time. (I know you know that) |
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I guess not. Had to look an ME 262 up to see what it was. Was a bit before my time in a cockpit. 
But, I see what you mean about the paint shaker. Makes sense now.
The only piston powered helicopter I ever flew was powered by a horizontal six with the power transferred to the rotor transmission via 6 V Belts. They said the bird would fly with as little as two in an emergency but, who really wants to find out if that's true.
Rams[This message has been edited by blackrams (edited 10-13-2020).]
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williegoat
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OCT 13, 11:55 PM
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Some flat sixes are boxers and some are 180o Vs. Which is the Valk?
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MidEngineManiac
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OCT 14, 12:05 AM
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| quote | Originally posted by blackrams:
I guess not. Had to look an ME 262 up to see what it was. Was a bit before my time in a cockpit.
But, I see what you mean about the paint shaker. Makes sense now.
The only piston powered helicopter I ever flew was powered by a horizontal six with the power transferred to the rotor transmission via 6 V Belts. They said the bird would fly with as little as two in an emergency but, who really wants to find out if that's true.
Rams
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What they didnt tell you about belt drives, is when the first one fails, it gets sucked in and takes all the rest of them with it !
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blackrams
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OCT 14, 09:13 AM
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| quote | Originally posted by williegoat:
Some flat sixes are boxers and some are 180o Vs. Which is the Valk? |
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The Valkyrie engine is a boxer. Smoothest engine I've ever seen.
The Valkyrie Nickel Trick proves what many can't believe. I've done it myself.
Take a gander at any of the offered videos at this link.
https://www.bing.com/search...46faa9066f8a7693d2d4
Rams
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maryjane
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OCT 14, 10:23 AM
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| quote | Originally posted by williegoat:
You have never seen the starter motor in an ME-262?
In every horizontally opposed twin that I have ever seen, the pistons reach TDC at the same time. Otherwise they would shake like a paint mixer. Think VW and BMW.
A two stroke fires (probably a few degrees before) the top, every time. (I know you know that) |
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The engine being discussed is a flat plane 6 but it is not an opposed piston engine. OP engines have no cylinder heads, 2 pistons share 1 cylinder space, and the 2 pistons in each cylinder are crown to crown and are exactly opposed to each other.
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blackrams
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OCT 14, 10:30 AM
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| quote | Originally posted by maryjane:
The engine being discussed is a flat plane 6 but it is not an opposed piston engine. OP engines have no cylinder heads, 2 pistons share 1 cylinder space, and the 2 pistons in each cylinder are crown to crown and are exactly opposed to each other.
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Seems like I learn something on this forum almost daily. As usual, maryjane being the source for much of that. 
Rams
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maryjane
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OCT 14, 10:42 AM
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williegoat
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OCT 14, 10:46 AM
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| quote | Originally posted by maryjane:
The engine being discussed is a flat plane 6 but it is not an opposed piston engine. OP engines have no cylinder heads, 2 pistons share 1 cylinder space, and the 2 pistons in each cylinder are crown to crown and are exactly opposed to each other.
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I know you are right. I learned the term incorrectly when I was a kid and still misapply it out of habit. We discussed the Napier Deltic here recently.[This message has been edited by williegoat (edited 10-14-2020).]
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