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Old 03-27-2012, 10:27 AM   #1
yellowbirdrs OP
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When Everything Begun

1st. BMW airhead ever built



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Old 03-27-2012, 12:40 PM   #2
CurlyMike
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that was coooool. Back brake was a trip.
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Old 03-27-2012, 01:15 PM   #3
supershaft
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Vech and his wife, Richard, and others there at Benchmark are good folks in my book.

The computer graphics person kinda missed the boat on the boxer layout!
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Old 03-27-2012, 02:58 PM   #4
helion42
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Quote:
Originally Posted by supershaft View Post
Vech and his wife, Richard, and others there at Benchmark are good folks in my book.

The computer graphics person kinda missed the boat on the boxer layout!
That was bugging me as well, maybe the archaic versions had aligned side-to-side motion, vs. opposed, out-at-the-same-time piston motion? It would undoubtedly be much less smooth, and I thought that was one of the huge qualities of them.
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Old 03-27-2012, 03:33 PM   #5
supershaft
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They have always had 180 degree cranks hence the name boxer. The graphics is a 360 degree crank. I guess our bikes would be called dancers if they had 360 degree cranks!?! Or maybe paint shakers?
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Old 03-27-2012, 06:26 PM   #6
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If they werent 180 apart, it would shake itself to bits inside of 10 revolutions, I reckon

Or it would need Massive counter-balancers.
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Old 03-27-2012, 07:04 PM   #7
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Quote:
Originally Posted by supershaft View Post
They have always had 180 degree cranks hence the name boxer. The graphics is a 360 degree crank. I guess our bikes would be called dancers if they had 360 degree cranks!?! Or maybe paint shakers?
with relation to bore and stroke,,an engine is said to be "over square", "under square", or "square",as are BMW's,
,hence the term boxer.
Hmmmm, I stand corrected,,thanks Bobby!
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Old 03-27-2012, 07:17 PM   #8
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Originally Posted by peterman View Post
with relation to bore and stroke,,an engine is said to be "over square", "under square", or "square",as are BMW's,
,hence the term boxer.
Hmmmm, I stand corrected,,thanks Bobby!
That's a bunch of crap. An R50 is well under square, and an R100 is over square.
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Old 03-27-2012, 07:21 PM   #9
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Quote:
Originally Posted by peterman View Post
with relation to bore and stroke,,an engine is said to be "over square", "under square", or "square",as are BMW's,
,hence the term boxer.
Hmmmm, I stand corrected,,thanks Bobby!
Interesting interpretation. Square box.

I suppose you could then call then Cubists, but the first ones were really more Art Deco. And then I think they evolved directly into post-modernism from there.
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Old 03-27-2012, 07:26 PM   #10
disston
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The graphics of the engine in that video are just wrong. The cylinders are even firing, one cylinder fires for every 180* of crank rotation. You can hear the cylinders firing evenly in the video.

I doubt the reference to Boxer is because of Square bore to stroke cylinders. In the 20's and for quit a long time all engines were long strokers. The term Over Square is rather modern. Short stroke for higher RPM. And a gas waster too, BTW. Don't know the right answer tho, so you might be right.

I hope Vech can do something about this. He's featured maybe he an protest the ignorance of who ever messed the graphics up.
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Old 03-27-2012, 07:32 PM   #11
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the term boxer was surely for the engine style not represented in this video.


there is no other way:





Im going to call mine "a pugilistic motor" from now on.




at least, this is what i was led to believe by the same people that told me the blue/white logo thing was a propeller from back in the airplane days.
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Old 03-28-2012, 12:31 PM   #12
sebastianhammer
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http://www.dict.cc/german-english/Boxermotor.html

NOUN der Boxermotor | die Boxermotoren

Boxermotor {m}
flat engine
boxer engine
horizontally-opposed engine
tech. pancake engine
tech. opposed cylinder engine
tech. opposed piston engine [Am.]
Or, to be precise, an airhead has a luftgekühlter boxermotor. Which rolls off the tongue much nicer anyway.
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Old 03-28-2012, 01:20 PM   #13
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Old 03-28-2012, 02:13 PM   #14
danedg
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It was one of the LOUDEST motorads on site!

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Old 03-28-2012, 02:19 PM   #15
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